Highly transparent low resistance ZnO/Ag nanowire/ZnO composite electrode for thin film solar cells

Areum Kim, Yulim Won, Kyoohee Woo, Chul Hong Kim, Joo Ho Moon

Research output: Contribution to journalArticle

313 Citations (Scopus)

Abstract

We present an indium-free transparent conducting composite electrode composed of silver nanowires (AgNWs) and ZnO bilayers. The AgNWs form a random percolating network embedded between the ZnO layers. The unique structural features of our ZnO/AgNW/ZnO multilayered composite allow for a novel transparent conducting electrode with unprecedented excellent thermal stability (∼375 C), adhesiveness, and flexibility as well as high electrical conductivity (∼8.0 Ω/sq) and good optical transparency (>91% at 550 nm). Cu(In,Ga)(S,Se) 2 (CIGSSe) thin film solar cells incorporating this composite electrode exhibited a 20% increase of the power conversion efficiency compared to a conventional sputtered indium tin oxide-based CIGSSe solar cell. The ZnO/AgNW/ZnO composite structure enables effective light transmission and current collection as well as a reduced leakage current, all of which lead to better cell performance.

Original languageEnglish
Pages (from-to)1081-1091
Number of pages11
JournalACS Nano
Volume7
Issue number2
DOIs
Publication statusPublished - 2013 Feb 26

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

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