San Diego Convention Center
San Diego, California, United States
9 - 13 August 2015
San Diego, California, United States
9 - 13 August 2015
Organic Photonics + Electronics Plenary Session
Date: Tuesday 11 August 2015Session Chair: Zakya H. Kafafi, Lehigh Univ. (United States)
Time: 9:00 AM - 11:45 AM
Time: 9:00 AM - 11:45 AM
9:00 to 9:30 AM
Current Status of High Efficiency OLEDs Based on Delayed Fluorescence
Chihaya Adachi, Kyushu Univ. (Japan)
Abstract: In recent years, we have reported a series of highly efficient thermally activated delayed fluorescence (TADF) molecules and their OLED performance. We clarified that a large delocalization of the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) in charge transfer compounds provides a small energy gap between singlet and triplet excited states (ΔEST < 0.2 eV). Simultaneously, even when there is a small overlap between the two wavefunctions, we can successfully keep rather high radiative decay rate (kr) by inducing a large oscillator strength (f). Thus, compatibility of both small ΔEST and large kr is fundamental for high efficiency delayed fluorescence. Based on this design concept, we systematically synthesized a wide variety of TADF molecules and demonstrated high efficiency OLEDs with maximum external quantum efficiencies of ~20%. In this talk, we review material design, synthesis, photophysics and OLED performance and discuss the future prospects.
Biography: Professor Chihaya Adachi obtained his doctorate degree in Materials Science and Technology in 1991 from Kyushu University. In 1991, Adachi began working for Ricoh Co., Chemical Products R&D Centre, Research Associate at Department of Functional Polymer Science, Shinshu University, Research Staff at Department of Electrical Engineering, Princeton University, Associate Professor and Professor at Chitose Institute of Science and Technology. In 2006, he became a professor at Centre for Future Chemistry and department of applied chemistry at Kyushu University. Since 2010, he is the director of Centre for Organic Photonics and Electronics Research (OPERA) at Kyushu University.
9:30 to 10:00 AM
Interfacing with the Brain using Organic Electronics
George G. Malliaras, Ecole Nationale Supérieure des Mines de Saint-Étienne (France)
Abstract: Implantable electrodes are being used for diagnostic purposes, for brain-machine interfaces, and for delivering electrical stimulation to alleviate the symptoms of diseases such as Parkinson’s. The field of organic electronics made available devices with a unique combination of attractive properties, including mixed ionic/electronic conduction, mechanical flexibility, enhanced biocompatibility, and capability for drug delivery. I will present examples of organic electrodes, transistors and other devices for recording and stimulation of brain activity and discuss how they can improve our understanding of brain physiology and pathology, and how they can be used to deliver new therapies.
Biography: Professor George Malliaras is the Head of the Department of Bioelectronics of the Ecole des Mines de St. Etienne (France). His research has been recognized with awards from the NY Academy of Sciences, the US National Science Foundation, and DuPont. He is a Fellow of the Royal Society of Chemistry. He received his PhD from the University of Groningen (Netherlands), did a postdoc at IBM Research, was a faculty member in Materials Science and Engineering at Cornell University, and served as the Lester B. Knight Director of the Cornell NanoScale Science & Technology Facility.
10:00 to 10:15 AM
Announcement of the Organic Photonics + Electronics Best Student Paper Award Winner
Coffee Break 10:15 to 10:45 AM
10:45 to 11:15 AM
Ultraflexible Organic Thin-Film Devices for Wearable and Implantable Electronics
Takao Someya, Univ. of Tokyo (Japan)
Abstract: Mechanically flexible and stretchable devices are expected to open new possibilities in fields of wearable and implantable electronics. Especially, conformability, ruggedness, lightweight, biocompatibility, and large-area are all important to create new electronic applications that can be directly mounted on the surface of human skins and/or even inside the body. From this viewpoint, ultraflexible organic thin-film devices, such as organic thin-film transistors (OTFTs), organic photovoltaic cells (OPVs), and organic light-emitting diodes (OLEDs), have attracted much attention recently. In this talk, we report recent progress of ultraflexible organic thin-film devices that are manufactured on ultrathin plastic film with the thickness of 1 μm. We will also describe emerging applications using ultraflexible and stretchable electronic systems in the fields of biomedical electronics.
Biography: Professor Takao Someya received the Ph.D. degree in electrical engineering from the University of Tokyo in 1997. Since 2009, he has been a professor of Department of Electrical and Electronic Engineering, The University of Tokyo. His current research interests include organic transistors, flexible electronics, plastic integrated circuits, large-area sensors, and plastic actuators.
11:15 to 11:45 AM
Recent Progress on Hybrid Organic-Inorganic and Perovskite-based Solar Cells
Yang Yang, Univ. of California, Los Angeles (United States)
Abstract: By combining the attributes from both organic and inorganic species, the light-harvesting hybrid perovskite (e.g. CH3NH3PbI3) materials possess amazing physical properties that led to high performance solar cells within only a few years of research. Film formation and interface engineering of perovskite materials are crucial parameters that determine the resulting solar cell efficiency. Besides single junction perovskite-based solar cells, research has turned to the tandem devices that combine another low band gap material such as Si in order to achieve even higher efficiency. My presentation will summarize recent progress in this field and report on new results from UCLA (e.g. interface engineering, perovskite-based photodetectors and tandem solar cells).
Biography: Professor Yang Yang holds a BS in Physics from the National Cheng-Kung Univ. in 1982, and he received his M.S. and Ph.D. in Physics and Applied Physics from the Univ. of Massachusetts, Lowell in 1988 and 1992, respectively. Before he joined UCLA in 1997, he served on the research staff of UNIAX (now DuPont Display) in Santa Barbara from 1992 to 1996. Yang is now the Carol and Lawrence E. Tannas Jr. Endowed Chair Professor of Materials Science and Engineering at UCLA. He is a materials physicist with expertise in the fields of organic electronics, organic/inorganic interface engineering, and the development and fabrication of related devices, such as photovoltaic cells, LEDs, and memory devices. His H-Index is ~90, and he has published more than 300 peer-reviewed papers, ~60 patents (filed or issued), and given 150 invited talks. He is Fellow of SPIE, the Electromagnetics (EM) Academy, and the Royal Society of Chemistry (FRSC).
Symposium-wide Plenary Session
Date: Sunday 9 August 20156:00 pm to 6:05 pm
Time: 6:00 PM - 6:40 PM
Time: 6:00 PM - 6:40 PM
Welcome and Opening Remarks
The Rosetta Mission: What it Takes to Land on a Comet
Artur B. Chmielewski, US Rosetta Project manager, NASA JPL (USA)
Mission to Catch a Comet! Comets have inspired awe and wonder since the dawn of history. Many scientists today believe that comets crashed into Earth in its formative period spewing organic molecules that were crucial to the growth of life. Comets may have formed about the same time as the giant planets of our solar system (Jupiter, Saturn, Uranus, and Neptune) - about 4.6 billion years ago. Some scientists think that comets and planets were both made from the same clumps of dust and ice that spewed from our Sun’s birth; others think that these roving time capsules are even older than that, and that they may contain grains of interstellar stuff that is even older than our solar system.
Biography: Artur B. Chmielewski is the US Rosetta Project Manager. He has managed several flight projects at JPL: the Space Technology 8 mission, Mars Telecommunication Orbiter Rendezvous Experiment, Space Technology 6 mission, Gossamer Program, Inflatable Antenna Flight Experiment and the Cryocooler Flight Experiment. He was also a Project Element Manager on Deep Space 1 mission and a power system engineer for Galileo, Ulysses and Cassini spacecraft. He was responsible for development of 9 space instruments and several new technology devices. He also managed a flagship pre-project - space radio astronomy mission ARISE. In the two years at NASA Headquarters he managed the space experiments program In-STEP. He has degrees in mechanical engineering and computer science from University of Michigan and USC.
Optics + Photonics for Sustainable Energy Plenary Session
Date: Monday 10 August 2015Session Chair: Oleg V. Sulima, GE Global Research (United States)
Time: 2:00 PM - 4:30 PM
Time: 2:00 PM - 4:30 PM
2:00 to 2:30 pm
Status and Challenges of CdTe Photovoltaics
Wyatt Metzger, National Renewable Energy Lab. (United States)
Abstract: Current research in CdTe solar cells is targeting 24% efficiency to drive cost to less than 40 cents/W, displace silicon market share, and reach grid parity. By maximizing photocurrent, CdTe cell efficiency has recently reached 21.5% and surpassed multicrystalline silicon. There is still headroom to increase performance further by improving hole density, lifetime, and thereby photovoltage. However, this will require changing a stubborn defect chemistry that has caused photovoltage to be stagnant for decades. We will describe new work on single-crystal and polycrystalline CdTe designed to understand and overcome this challenge.
Biography: Dr. Wyatt Metzger is the CdTe Technology leader at the National Renewable Energy Laboratory and prior to this worked as a Principal Scientist and Manager at GE.
2:30 to 3:00 pm
Photochemical Upconversion of Light for Renewable Energy and More
Timothy Schmidt, The Univ. of New South Wales (Australia)
Abstract: It has been abundantly demonstrated that certain molecular compositions are capable of photochemical upconversion (PUC), where lower energy photons are converted to higher energy photons, sometimes with quantum efficiencies approaching 50%. PUC has been applied to solar cells, increasing the EQE of the devices in the region below the bandgap of the device. There remain challenges, though, to the realisation of efficient photochemical upconversion under low levels of incident light, and the incorporation of a liquid upconversion medium into a device. This talk will address these challenges and our progress towards meeting them.
Biography: Tim Schmidt obtained his PhD from Cambridge in 2002. He was appointed to The University of Sydney in 2004, and 2014 moved to UNSW as Professor and ARC Future Fellow. Tim’s research straddles many areas of spectroscopy with applications to renewable energy, astrochemistry and atmospheric chemistry.
Coffee Break 3:00 to 3:30 pm
3:30 to 4:00 pm
The Importance of Reliability to the SunShot Initiative
Rebecca Jones-Albertus, U.S. Dept. of Energy Solar Energy Technologies Office (United States)
Abstract: The Department of Energy’s SunShot Initiative was launched in 2011 to make subsidy-free solar electricity cost competitive with conventional energy sources by 2020. Research in reliability plays a major role in realizing this goal. Improving photovoltaic module lifetime and reducing degradation rates increase the lifetime energy output. Increasing confidence in photovoltaic system performance prediction can lower perceived investment risk and thus the cost of capital. In 2015, SunShot expects to award over $40 million to impactful reliability research through its SunShot National Laboratory Multiyear Partnership and Physics of Reliability: Evaluating Design Insights for Component Technologies in Solar 2 programs.
Biography: Dr. Becca Jones-Albertus is the Program Manager for Photovoltaics Research and Development in the U.S. Department of Energy’s Solar Energy Technologies Office. She oversees $200 million in funding to reduce photovoltaic material and process costs, increase module efficiency and improve module reliability, towards and beyond the goals of the SunShot Initiative.
Dr. Jones-Albertus has over a decade of experience working with solar cell materials and devices, from fundamental research and development to manufacturing. Prior to the DOE, Dr. Jones-Albertus was the Characterization and Design Manager at Solar Junction, where she led work contributing to the development of the company’s breakthrough dilute nitride solar cells, their two-time world record triple junction solar cells and then the successful transfer of that technology to a high volume manufacturing toolset. She has 34 technical publications and 4 patents.
4:00 to 4:30 pm
Solar Hydrogen: Harvesting Light and Heat from Sun
Liejin Guo, International Research Ctr. for Renewable Energy, State Key Lab. of Multiphase Flow in Power Engineering, Xi'an Jiaotong Univ. (China)
Abstract: My research group in the State Key Laboratory of Multiphase Flow in Power Engineering (SKLMF), Xi’an Jiaotong University has been focusing on renewable energy, especially solar hydrogen, for about 20 years. In this presentation, I will present the most recent progress in our group on solar hydrogen production using light and heat. Firstly, “cheap” photoelectrochemical and photocatalytic water splitting, including both nanostructured materials and pilot-scale demonstration in our group for light-driven solar hydrogen (artificial photosynthesis) will be introduced. Then I will make a deep introduction to the achievements on the thermal-driven solar hydrogen, i.e., biomass/coal gasification in supercritical water for large-scale and low-cost hydrogen production using concentrated solar light.
Biography: Dr. Liejin Guo is a professor and the director of State Key Laboratory of Multiphase Flow in Power Engineering, and also the founding director of International Research Center for Renewable Energy in Xi'an Jiaotong University, China.
He obtained his Ph.D. Degree in Engineering Thermophysics from Xi’an Jiaotong University in 1989. He has published several books/chapters and more than 400 papers, and been rewarded many times by Chinese government because of his distinguished contribution in science and technologies. His research interest includes multiphase flow, heat transfer, and renewable energy technologies.
NanoScience + Engineering Plenary Session
Date: Monday 10 August 2015Session Chairs: Satoshi Kawata, Osaka Univ. (Japan) and David L. Andrews, Univ. of East Anglia (United Kingdom)
Time: 9:15 AM - 12:00 PM
Time: 9:15 AM - 12:00 PM
9:15 to 10:00 am: Extreme Imaging and Beyond
Keisuke Goda, The Univ. of Tokyo (Japan)
Abstract: Imaging is an effective tool in scientific research, manufacturing, and medical practice. However, despite its importance, it is not easy to observe dynamical events that occur much faster or slower than the human time scale (found in photochemistry, phononics, fluidics, MEMS, and tribology). Unfortunately, traditional methods for imaging fall short in visualizing them due to their technical limitations. In this talk, I will introduce radically different approaches to imaging. I will first discuss ultrafast imaging and then talk about ultraslow imaging. I will show how these imaging tools help us better understand dynamical processes.
Biography: Keisuke Goda is a Professor of Physical Chemistry at the University of Tokyo and an ImPACT Program Manager, Cabinet Office, Government of Japan. His research focuses on imaging and spectroscopy. He obtained a B.A. degree summa cum laude from UC Berkeley and a Ph.D. degree from MIT, both in physics.
Coffee Break 10:00 to 10:30 am
10:30 to 11:15 am: Nano-Bio-Optomechanics: Nanoaperture Tweezers Probe Single Nanoparticles, Proteins, and their Interactions
Reuven Gordon, Univ. of Victoria (Canada)
Abstract: Nanoparticles in the single digit nanometer range can be easily isolated and studied with low optical powers using nanoaperture tweezers. We have studied individual proteins and their interactions with small molecules, DNA and antibodies. Recently, using the fluctuations of the trapped object, we have pioneered a new way to “listen” to the vibrations of nanoparticles in the 100 GHz – 1 THz range; the approach is called extraordinary acoustic Raman (EAR). EAR gives unprecedented low frequency spectra of individual proteins in solution, allowing for identification and analysis, as well as probing their role in biological functions. We have also used EAR to study the elastic properties, shape and size of various individual nanoparticles.
Biography: Reuven Gordon is the Canada Research Chair in Nanoplasmonics and a Professor in ECE, University of Victoria (Canada). He has 120 papers (7 invited), 3 book chapters, 3 patents (+4 applications). His recent distinctions include the Craigdarroch Silver Medal, an AGAUR Visiting Professorship and an Accelerate BC Industry Impact Award.
11:15 am to 12:00 pm: Device Applications of Semiconductor Nanoantennas and Metafilms
Mark Brongersma, Geballe Lab. for Advanced Materials (GLAM) (United States)
Abstract: Semiconductor nanostructures are at the heart of modern-day electronic devices and systems. Due to their high refractive index, they also provide a myriad of opportunities to manipulate light. When properly sized and shaped, they can support strong optical resonances that boost light-matter interaction over bulk materials and enable their use in controlling the flow of light at the nanoscale. In this presentation, I will discuss the use of individual, resonant nanostructures and dense arrays thereof (metafilms) in a variety of optoelectronic devices and illustrate how the performance of these devices can be improved by engineering the constituent nanostructure, size, shape, and/or spacing.
Biography: Mark Brongersma is a Professor in the Department of Materials Science and Engineering at Stanford University. He received his PhD from the FOM Institute in Amsterdam, The Netherlands, in 1998. From 1998-2001 he was a postdoctoral research fellow at the California Institute of Technology. Brongersma is a Fellow of the Optical Society of America, the SPIE, and the American Physical Society.
Optical Engineering Plenary Session
Date: Tuesday 11 August 2015Session Chair: Craig Olson, L-3 Communications (USA)
Time: 4:00 PM - 5:25 PM
Time: 4:00 PM - 5:25 PM
4:00 to 4:05 pm: Welcome and Opening Remarks
4:05 to 4:45 pm: Democratization of Next-Generation Imaging, Sensing, and Diagnostics Tools Through Computational Photonics
Aydogan Ozcan, Univ. of California, Los Angeles (USA) and California NanoSystems Institute (USA)
Abstract: My research focuses on the use of computation/algorithms to create new optical microscopy, sensing, and diagnostic techniques, significantly improving existing tools for probing micro- and nano-objects while also simplifying the designs of these analysis tools. In this presentation, I will introduce a new set of computational microscopes which use lens-free on-chip imaging to replace traditional lenses with holographic reconstruction algorithms. Basically, 3D images of specimens are reconstructed from their “shadows” providing considerably improved field-of-view (FOV) and depth-of-field, thus enabling large sample volumes to be rapidly imaged, even at nanoscale. These new computational microscopes routinely generate <1–2 billion pixels (giga-pixels), where even single viruses can be detected with a FOV that is <100 fold wider than other techniques. At the heart of this leapfrog performance lie self-assembled liquid nano-lenses that are computationally imaged on a chip. These self-assembled nano-lenses are stable for <1 hour at room temperature, and are composed of a biocompatible buffer that prevents nanoparticle aggregation while also acting as a spatial "phase mask." The field-of-view of these computational microscopes is equal to the active-area of the sensor-array, easily reaching, for example, <20 mm2 or <10 cm2 by employing state-of-the-art CMOS or CCD imaging chips, respectively.
In addition to this remarkable increase in throughput, another major benefit of this technology is that it lends itself to field-portable and cost-effective designs which easily integrate with smartphones to conduct giga-pixel tele-pathology and microscopy even in resource-poor and remote settings where traditional techniques are difficult to implement and sustain, thus opening the door to various telemedicine applications in global health. Some other examples of these smartphone-based biomedical tools that I will describe include imaging flow cytometers, immunochromatographic diagnostic test readers, bacteria/pathogen sensors, blood analyzers for complete blood count, and allergen detectors. Through the development of similar computational imagers, I will also report the discovery of new 3D swimming patterns observed in human and animal sperm. One of this newly discovered and extremely rare motion is in the form of "chiral ribbons" where the planar swings of the sperm head occur on an osculating plane creating in some cases a helical ribbon and in some others a twisted ribbon. Shedding light onto the statistics and biophysics of various micro-swimmers' 3D motion, these results provide an important example of how biomedical imaging significantly benefits from emerging computational algorithms/theories, revolutionizing existing tools for observing various micro- and nano-scale phenomena in innovative, high-throughput, and yet cost-effective ways.
Biography: Aydogan Ozcan is the Chancellor’s Professor at UCLA and an HHMI Professor with the Howard Hughes Medical Institute, leading the Bio- and Nano-Photonics Laboratory at UCLA School of Engineering and is also the Associate Director of the California NanoSystems Institute (CNSI). Dr. Ozcan holds 29 issued patents (all of which are licensed) and <20 pending patent applications and is also the author of one book and the co-author of more than 400 peer-reviewed research articles in major scientific journals and conferences. Dr. Ozcan is a Fellow of SPIE and OSA, and has received major awards including the Presidential Early Career Award for Scientists and Engineers (PECASE), SPIE Biophotonics Technology Innovator Award, SPIE Early Career Achievement Award, ARO Young Investigator Award, NSF CAREER Award, NIH Director’s New Innovator Award, ONR Young Investigator Award, IEEE Photonics Society Young Investigator Award and MIT’s TR35 Award for his seminal contributions to near-field and on-chip imaging, and telemedicine based diagnostics. Dr. Ozcan is also the recipient of the National Geographic Emerging Explorer Award, National Academy of Engineering (NAE) The Grainger Foundation Frontiers of Engineering Award, Popular Science Brilliant 10 Award, Gates Foundation Grand Challenges Award, Popular Mechanics Breakthrough Award, Netexplorateur Award, Microscopy Today Innovation Award, and the Wireless Innovation Award organized by the Vodafone Americas Foundation as well as the Okawa Foundation Award.
4:45 to 5:25 pm: Restocking the Optical Designer's Toolbox for Next-Generation Wearable Displays
Bernard C. Kress, Google (USA)
Abstract: Three years ago, industry and consumers learned that there was more to Head Mounted Displays (HMDs) than the long-lasting but steady market for defense or the market for gadget video player headsets: the first versions of Smart Glasses were introduced to the public. Since then, most major consumer electronics companies unveiled their own versions of Connected Glasses, Smart Glasses or Smart Eyewear, AR (Augmented Reality) and VR (Virtual Reality) headsets. This rush resulted in the build-up of a formidable zoo of optical technologies, each claiming to be best suited for the task on hand. Today, the question is not so much anymore "will the Smart Glass market happen?", but rather "which optical technologies will be best fitted for the various declinations of the existing wearable display market", one of the main declination being the Smart Glasses market.
Biography: Bernard Kress has made significant scientific contributions as a researcher, professor, consultant, instructor and author, in the fields of micro-optics, diffractives and holography, for research, industry and consumer electronics for over twenty years. He has been involved in half a dozen start-ups in the Silicon Valley on optical data storage, optical telecom, biophotonics, optical sensors, imaging and display. Bernard holds 29 international granted patents. He is a short course instructor for SPIE on micro-optics and has published 3 books "Digital Diffractive Optics" (1999, Wiley), "Optical System Design: Diffractive Optics" (2005, Mac Graw Hill) and "Applied Digital Optics" (2007, Wiley), as well as a field guide "Digital Micro-Optics" (2014, SPIE). He is currently with Google [X] Labs as the Principal Optical Architect.