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Proceedings Paper

From printed organic photodiodes to printed image sensors (Conference Presentation)
Author(s): Uli Lemmer; Noah Strobel; Jonathan Lehr; Ralph Eckstein; Gerardo Hernandez-Sosa; Tobias Rödlmeier
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Paper Abstract

Organic photodiodes (OPDs) have in recent years reached a level of performance comparable to their inorganic counterparts. Using additives like PMMA, we were able to tune the transparency and viscosity of a P3HT:PCBM photoactive blend while at the same time achieving a two-fold enhancement of the detection speed. Furthermore, we have developed approaches towards the digital realization of image sensors using aerosol jet printing and a direct-printed patterning technique utilizing the self organization of functional inks. These techniques allow for a reproducible deposition of multilayer devices with high registration accuracies and feature sizes down to a few microns. We present a comprehensive electrical and optical characterization of these printed image sensors. The devices exhibit specific detectivities of >1E12 Jones over a broad wavelength range (400-750 nm) and maximum responsivities of 0.25 A/W. An entirely printed matrix image sensor composing of 256 individual pixels with an individual active area of ≈250 μm × 300 μm was fabricated.

Paper Details

Date Published: 18 September 2018
Proc. SPIE 10738, Organic and Hybrid Sensors and Bioelectronics XI, 1073806 (18 September 2018); doi: 10.1117/12.2321689
Show Author Affiliations
Uli Lemmer, Karlsruher Institut für Technologie (Germany)
Noah Strobel, Karlsruher Institut für Technologie (Germany)
Jonathan Lehr, Karlsruher Institut für Technologie (Germany)
Ralph Eckstein, Karlsruher Institut für Technologie (Germany)
Gerardo Hernandez-Sosa, Karlsruher Institut für Technologie (Germany)
Tobias Rödlmeier, Karlsruher Institut für Technologie (Germany)

Published in SPIE Proceedings Vol. 10738:
Organic and Hybrid Sensors and Bioelectronics XI
Ioannis Kymissis; Ruth Shinar; Luisa Torsi; Emil J. W. List-Kratochvil, Editor(s)

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