Journal
APPLIED PHYSICS LETTERS
Volume 107, Issue 2, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4926799
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Funding
- National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planning (MSIP) [2013R1A1A1011880]
- Pioneer Research Center Program through NRF - MSIP [NRF-2013M3C1A3065528]
- NRF - MSIP [NRF-2014R1A1A2059207]
- National Research Foundation of Korea [2013M3C1A3065528, 2013R1A1A1011880, 2014H1A2A1022414, 2014R1A1A2059207, 31Z20130012940] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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We introduce a simple but effective graphene oxide (GO) modification with metal chloride treatments to produce high-performance polymer solar cells (PSCs). The role of various metal chlorides on GO and their effects on device performances of PSCs was investigated. X-ray photoelectron spectroscopy, ultraviolet photoemission spectroscopy, and current-voltage measurement studies demonstrated that metal chloride can induce a p-doping effect and increase the GO work-function, thus resulting in an improved built-in potential and interfacial resistance in PSCs. The resultant PSCs with metal chloride exhibited improved device efficiency than those with the neat GO. Furthermore, with the metal chloride-doped GO, we finally achieved an excellent PSC-efficiency of 6.58% and a very desirable device stability, which constitute a highly similar efficiency but much better PSC life-time to conventional device with poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS). This study could be a valuable way to produce various PEDOT: PSS alternatives and beneficial for producing high-performance and cost-efficient polymeric devices. (C) 2015 AIP Publishing LLC.
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