Photo-Electrochemical Performance of Interpenetration-Structured Heterojunction by Overlapping CuO and ZnO Nanorod Arrays

Fan Wu, Rajesh Pathak, Tiansheng Zhang, Haibing Xu, Yanhua Tong, Ronghua Jian, Qiquan Qiao

Research output: Contribution to journalArticlepeer-review

Abstract

A facile design of interpenetration-structured p-n heterojunction device was fabricated by overlapping p-CuO and n-ZnO nanorod arrays directly. The design showed weak photovoltaic performance. However, the p-n heterojunction system shows the significantly enhanced photocurrent and photovoltage with the assistance of filling electrolyte (I3-/I-). The charge carrier dynamics indicates that the reversible redox couple (I3-/I-) electrolyte can promote electron transfer from CuO to ZnO better, i.e. better charge separation efficiency and photocurrent.

Original languageEnglish (US)
Article number066508
JournalJournal of the Electrochemical Society
Volume168
Issue number6
DOIs
StatePublished - Jun 2021

ASJC Scopus subject areas

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

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