Cited 0 time in webofscience Cited 0 time in scopus

Systematic Optical Design of Constituting Layers to Realize High-Performance Red-Selective Thin-Film Organic Photodiodes

Title
Systematic Optical Design of Constituting Layers to Realize High-Performance Red-Selective Thin-Film Organic Photodiodes
Authors
Yoon, Seong WonKoh, C.W.Woo, H.Y.Chung, Dae Sung
DGIST Authors
Chung, Dae Sung
Issue Date
2018-02
Citation
Advanced Optical Materials, 6(4), 1701085
Type
Article
Article Type
Article
Keywords
HeterojunctionsOptical designPhotodiodesSol-gelsThin filmsTin compoundsTin oxidesTransfer matrix methodZinc oxideColor selectivityHigh detectivitiesOptical manipulationOptical simulationOrganic photodiodesZinc compounds
ISSN
2195-1071
Abstract
A high-performance red-selective thin-film organic photodiode (OPD) is designed. Dual-band absorbing poly[(2,5-bis(2-hexyldecyloxy)phenylene)-alt-(5,6-difluoro-4,7-di(thiophen-2-yl)benzo[c][1,2,5]-thiadiazole)] (PPDT2FBT) is introduced as the photoactive donor layer of a planar heterojunction OPD in conjunction with a sol-gel synthesized ZnO acceptor layer. The active layer thickness is systematically controlled to suppress band II absorption (λmax = 420 nm) of PPDT2FBT without sacrificing band I absorption (λmax = 650 nm). The optimal PPDT2FBT thickness is 320 nm to realize red-selective absorption while maintaining the low dark current density of the OPD (predicted by optical simulation conducted using the transfer matrix method). In addition, the introduction of ZnO (with a strategically determined thickness) as an acceptor layer in front of PPDT2FBT in an illumination pathway enables further suppression of band II absorption because of the blue color filter effect. Consequently, the resulting OPD with a device architecture of indium tin oxide/ZnO/PPDT2FBT/MoO3/Ag shows an outstanding red-selective photodiode performance with peak detectivity up to 3.04 × 1012 Jones and a high linear dynamic range of 116 dB. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
URI
http://hdl.handle.net/20.500.11750/5908
DOI
10.1002/adom.201701085
Publisher
Wiley-VCH Verlag
Related Researcher
Files:
There are no files associated with this item.
Collection:
Department of Energy Science and EngineeringEco Energy Device Lab1. Journal Articles


qrcode mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE