ZnO nanowalls grown at low-temperature for electron collection in high-efficiency perovskite solar cells

Jian Fu Tang, Zong Liang Tseng, Lung Chien Chen, Sheng Yuan Chu

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

This paper reports on the fabrication of ZnO nanowalls for use as an electron collecting layer (ECL) in CH3NH3PbI3 perovskite solar cells (PSCs). Two-dimension ZnO nanowalls were grown using a low-temperature chemical bath method with a thin Al film as a seed layer. We compared electron collecting layers based on nanowalls and sol-gel derived ZnO thin film in PSCs and sought to identify the mechanism underlying the collection of electrons. The proposed ZnO nanowalls achieved a fill factor significantly higher than that of ZnO thin films, which translated into a remarkable improvement in power conversion efficiency, reaching 13.6% under AM 1.5G illumination.

Original languageEnglish
Pages (from-to)18-22
Number of pages5
JournalSolar Energy Materials and Solar Cells
Volume154
DOIs
Publication statusPublished - 2016 Sep 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films

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