Highly efficient CH 3 NH 3 PbI 3 perovskite solar cells prepared by AuCl 3 -doped graphene transparent conducting electrodes

Jin Hyuck Heo, Dong Hee Shin, Sung Kim, Min Hyeok Jang, Min Ho Lee, Sang Woo Seo, Suk Ho Choi, Sang Hyuk Im

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

We employed AuCl 3 -doped graphene as a p-type transparent conducting electrode (TCE) in an p-i-n type CH 3 NH 3 PbI 3 perovskite solar cell using poly (3,4-ethylenedioxythiophene):poly(styrene sulfonate) and phenyl-C61-butyric acid methyl ester as the hole and electron transporting layers, respectively, and obtained 17.4–17.9% power conversion efficiency at 1 Sun condition. The work function of the AuCl 3 -doped graphene TCE was controllable from ∼4.52 to ∼4.86 eV. Due to the p-type doping by the AuCl 3 treatment, the graphene TCE shows good hole mobility and greatly-improved sheet resistance (∼70 ohm/cm 2 ) compared to the pristine graphene TCE (∼890 ohm/cm 2 ) but its transmittance was gradually decreased with the doping concentration (n D ). Owing to the trade-off correlation between the sheet resistance and the transmittance of the AuCl 3 -doped graphene TCE, the ratio of DC conductivity and optical conductivity was the highest at n D  = 7.5 mM. Therefore, the highest performance was achievable by using 7.5 mM AuCl 3 -doped graphene TCE.

Original languageEnglish
Pages (from-to)153-159
Number of pages7
JournalChemical Engineering Journal
Volume323
DOIs
Publication statusPublished - 2017 Jan 1

Keywords

  • AuCl
  • Graphene
  • p-Type doping
  • Perovskite solar cells
  • Transparent conducting electrode

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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