Piezoelectric-polarization-enhanced photovoltaic performance in depleted-heterojunction quantum-dot solar cells

Jian Shi, Ping Zhao, Xudong Wang

Research output: Contribution to journalArticlepeer-review

74 Scopus citations

Abstract

Piezoelectric polarization at the ZnO/PbS-quantum-dot (QD) interface can be used to engineer the heterojunction band structure and manipulate the width of the depletion region in the QD layer. This piezotronic modulation enhances charge extraction from the PbS QDs and improves the photovoltaic efficiency of depleted-heterojunction QD solar cells.

Original languageEnglish (US)
Pages (from-to)916-921
Number of pages6
JournalAdvanced Materials
Volume25
Issue number6
DOIs
StatePublished - Feb 13 2013

Keywords

  • piezoelectric polarization
  • piezotronics
  • quantum-dot photovoltaics

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