Strain-enhanced power conversion efficiency of a BP/SnSe van der Waals heterostructure

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Wenzhen Dou
  • Anping Huang
  • Yuhang Ji
  • Xiaodong Yang
  • Yanbo Xin
  • Hongliang Shi
  • Mei Wang
  • Zhisong Xiao
  • Miao Zhou

Detail(s)

Original languageEnglish
Pages (from-to)14787-14795
Journal / PublicationPhysical Chemistry Chemical Physics
Volume22
Issue number26
Online published21 May 2020
Publication statusPublished - 14 Jul 2020

Abstract

A promising BP/SnSe van der Waals (vdW) photovoltaic heterostructure was designed and investigated by first-principles calculations. The BP/SnSe vdW heterostructure showed inhibition of photogenerated carrier recombination as well as broad and high optical absorption intensity spanning the visible to deep ultraviolet regions reaching the order of 105 cm-1. The carrier mobility of the BP/SnSe vdW heterostructure exhibited anisotropic characteristics reaching approximately 103 cm2 V-1 s-1, with an intrinsic power conversion efficiency (PCE) of 11.96%. Our results show that the PCE can be increased to 17.24% when the conduction band offset between BP and SnSe is reduced by strain engineering. The distinctive and favorable properties suggest that the BP/SnSe vdW heterostructure has great potential for use in photovoltaic devices.

Research Area(s)

  • TOTAL-ENERGY CALCULATIONS, SEMICONDUCTORS, PHOSPHORENE, SNSE, 2D

Citation Format(s)

Strain-enhanced power conversion efficiency of a BP/SnSe van der Waals heterostructure. / Dou, Wenzhen; Huang, Anping; Ji, Yuhang; Yang, Xiaodong; Xin, Yanbo; Shi, Hongliang; Wang, Mei; Xiao, Zhisong; Zhou, Miao; Chu, Paul K.

In: Physical Chemistry Chemical Physics, Vol. 22, No. 26, 14.07.2020, p. 14787-14795.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review