Low-temperature sputtered nickel oxide compact thin film as effective electron blocking layer for mesoscopic NiO/CH3NH3PbI 3 perovskite heterojunction solar cells

Kuo Chin Wang, Po Shen Shen, Ming Hsien Li, Shi Chen, Ming Wei Lin, Peter Chen, Tzung Fang Guo

Research output: Contribution to journalArticlepeer-review

299 Citations (Scopus)

Abstract

We introduce the use of low temperature sputtered NiOx thin film, which substitutes the PEDOT-PSS and solution-processed NiOx as an effective electron blocking layer for mesoscopic NiO/CH3NH3PbI3 perovskite solar cells. The influences of film thickness and oxygen doping on the photovoltaic performances are scrutinized. The cell efficiency has been improved from 9.51 to 10.7% for devices using NiOx fabricated under pure argon atmosphere. With adequate doping under 10% oxygen flow ratio, we achieved power conversion efficiency of 11.6%. The procedure is large area scalable and has the advantage for cost-effective perovskite-based photovoltaics.

Original languageEnglish
Pages (from-to)11851-11858
Number of pages8
JournalACS Applied Materials and Interfaces
Volume6
Issue number15
DOIs
Publication statusPublished - 2014 Aug 13

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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