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Sci Rep. 2017 Mar 24;7:45079. doi: 10.1038/srep45079.

Functional solid additive modified PEDOT:PSS as an anode buffer layer for enhanced photovoltaic performance and stability in polymer solar cells.

Scientific reports

Binrui Xu, Sai-Anand Gopalan, Anantha-Iyengar Gopalan, Nallal Muthuchamy, Kwang-Pill Lee, Jae-Sung Lee, Yu Jiang, Sang-Won Lee, Sae-Wan Kim, Ju-Seong Kim, Hyun-Min Jeong, Jin-Beom Kwon, Jin-Hyuk Bae, Shin-Won Kang

Affiliations

  1. School of Electronics Engineering, College of IT Engineering, Kyungpook National University, 80 Daehakro, Bukgu, 41566, Daegu, Korea.
  2. Division of Information Technology, Future Industries Institute, Engineering and Environment, University of South Australia, Mawson Lakes, 5095, South Australia.
  3. Research Institute of Advanced Energy Technology, Kyungpook National University, 80 Daehakro, Bukgu, 41566, Daegu, Korea.
  4. Department of Chemistry Education, Kyungpook National University, 80 Daehakro, Bukgu, 41566, Daegu, Korea.
  5. School of Electronics Engineering, College of IT Engineering, Kyungpook National University, 80 Daehakro, Bukgu, 41566, Daegu, Korea. [email protected].

PMID: 28338088 PMCID: PMC5364469 DOI: 10.1038/srep45079

Abstract

Poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) is most commonly used as an anode buffer layer in bulk-heterojunction (BHJ) polymer solar cells (PSCs). However, its hygroscopic and acidic nature contributes to the insufficient electrical conductivity, air stability and restricted photovoltaic (PV) performance for the fabricated PSCs. In this study, a new multifunctional additive, 2,3-dihydroxypyridine (DOH), has been used in the PEDOT: PSS buffer layer to obtain modified properties for PEDOT: PSS@DOH and achieve high PV performances. The electrical conductivity of PEDOT:PSS@DOH films was markedly improved compared with that of PEDOT:PSS. The PEDOT:PSS@DOH film exhibited excellent optical characteristics, appropriate work function alignment, and good surface properties in BHJ-PSCs. When a poly(3-hexylthiohpene):[6,6]-phenyl C

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