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Proceedings Paper

Angle and polarization dependent characteristics of colloidal quantum dot absorption in Fano filters on flexible substrates
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Paper Abstract

We report theoretical and experimental investigations of infrared absorption characteristics for PbSe colloidal quantum dots in defect-free photonic crystal (PC) cavities, via Fano resonances. Angle and polarization independent transmission and absorption are feasible for surface normal incident beams with dispersion engineered modal design. Experimental demonstration was done on patterned single crystalline silicon nanomembranes (SiNMs) transferred on glass and on flexible PET substrates, with PbSe QDs backfilled into the air holes of the patterned SiNMs. These findings enable the design of spectrally selective photodetectors at near infrared regime with the desired angle and polarization properties.

Paper Details

Date Published: 26 January 2009
PDF: 8 pages
Proc. SPIE 7222, Quantum Sensing and Nanophotonic Devices VI, 72220V (26 January 2009); doi: 10.1117/12.809113
Show Author Affiliations
Li Chen, The Univ. of Texas at Arlington (United States)
Hongjun Yang, The Univ. of Texas at Arlington (United States)
Zexuan Qiang, The Univ. of Texas at Arlington (United States)
Huiqing Pang, Univ. of Wisconsin, Madison (United States)
Zhenqiang Ma, Univ. of Wisconsin, Madison (United States)
Jian Xu, The Pennsylvania State Univ. (United States)
Gail J. Brown, Air Force Research Lab. (United States)
Weidong Zhou, The Univ. of Texas at Arlington (United States)


Published in SPIE Proceedings Vol. 7222:
Quantum Sensing and Nanophotonic Devices VI
Manijeh Razeghi; Rengarajan Sudharsanan; Gail J. Brown, Editor(s)

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