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Highly Efficient Indoor Organic Photovoltaics with Spectrally Matched Fluorinated Phenylene-Alkoxybenzothiadiazole-Based Wide Bandgap Polymers

Authors
You, Young-JunSong, Chang EunQuoc Viet HoangKang, YoonmookGoo, Ji SooKo, Doo-HyunLee, Joe-JoonShin, Won SukShim, Jae Won
Issue Date
7월-2019
Publisher
WILEY-V C H VERLAG GMBH
Keywords
equivalent circuit model; indoor organic photovoltaics; parasitic resistance effects; PDTBTBz-2F(anti); PC71BM; spectrum matching
Citation
ADVANCED FUNCTIONAL MATERIALS, v.29, no.27
Indexed
SCIE
SCOPUS
Journal Title
ADVANCED FUNCTIONAL MATERIALS
Volume
29
Number
27
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/64669
DOI
10.1002/adfm.201901171
ISSN
1616-301X
Abstract
The unique electro-optical features of organic photovoltaics (OPVs) have led to their use in applications that focus on indoor energy harvesters. Various adoptable photoactive materials with distinct spectral absorption windows offer enormous potential for their use under various indoor light sources. An in-depth study on the performance optimization of indoor OPVs is conducted using various photoactive materials with different spectral absorption ranges. Among the materials, the fluorinated phenylene-alkoxybenzothiadiazole-based wide bandgap polymer-poly[(5,6-bis(2-hexyldecyloxy)benzo[c][1,2,5]thiadiazole-4,7-diyl)-alt-(5,50-(2,5-difluoro-1,4-phenylene)bis(thiophen-2-yl))] (PDTBTBz-2F(anti))-contained photoactive layer-exhibits a superior spectrum matching with indoor lights, particularly a light-emitting diode (LED), which results in an excellent power absorption ratio. These optical properties contribute to the state-of-the-art performance of the PDTBTBz-2F(anti):[6,6]-phenyl-C-71 butyric acid methyl ester (PC71BM)-based OPV with an unprecedented high power-conversion efficiency (PCE) of 23.1% under a 1000 lx LED. Finally, its indoor photovoltaic performance is observed to be better than that of an interdigitated-back-contact-based silicon photovoltaic (PCE of 16.3%).
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Graduate School of Energy and Environment (KU-KIST GREEN SCHOOL) > Department of Energy and Environment > 1. Journal Articles
College of Science and Technology > Division of Display and Semiconductor Physics > 1. Journal Articles
College of Engineering > School of Electrical Engineering > 1. Journal Articles

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Shim, Jae Won
공과대학 (전기전자공학부)
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