期刊
JOURNAL OF MATERIALS CHEMISTRY C
卷 2, 期 5, 页码 901-907出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3tc31900h
关键词
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资金
- Human Resources Development program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant [20134010200490]
- Korea government Ministry of Trade, Industry and Energy
The state of interfaces between organic semiconductors and/or metals in organic devices severely impacts their performance and stability. The commonly used organic semiconductor PEDOT: PSS (poly(3,4-ethylenedioxythiophene): poly(styrene sulfonate)) is hygroscopic in nature and can therefore be easily damaged if exposed to air and/or light illumination. In this study, we doped PEDOT: PSS with WOx nanocrystallites and found that organic photovoltaics (OPVs) with the WOx doped PEDOT:PSS degrade only by 5%, while OPVs with undoped PEDOT:PSS retain only 23% of their initial power conversion efficiency (PCE) after storing for 5000 h in air. Also, doping PEDOT:PSS with WOx enhances the initial PCE by similar to 13%, owing to reduced leakage current density and better Ohmic contact between the PEDOT:PSS and the anode.
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