"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

Study of band offset at ZnS/Cu2ZnIVS4(IV=Si,Ge,Sn) heterointerfaces

W. BAO1,* , F. Y. QIU1, S. BAI2, Y. LI1, D. M. CHEN1

Affiliation

  1. College of New Energy, Bohai University, Jinzhou 121013, China
  2. College of Engineering, Bohai University, Jinzhou 121013, China

Abstract

Electrical transport properties of heterojunction solar cells are greatly influenced by the band offsets at the heterointerface. In this research, the band offsets of ZnS/Cu2ZnIVS4(IV=Si,Ge,Sn) heterointerfaces were studied by first-principles calculation method and their heterojunction solar cells were simulated by AMPS simulator. Band offset of ZnS/Cu2ZnSiS4 was observed to be type II heterointerface, with a cliff-like conduction band offset. ZnS/Cu2ZnGeS4 and ZnS/Cu2ZnSnS4 were demonstrated to be type I heterointerface with the large conduction band spike (0.7eV and 1.4eV, respectively), caused very little short circuit current densities..

Keywords

Cu2ZnIVS4(IV=Si,Ge,Sn), Heterointerface, Band offset, Solar cell.

Citation

W. BAO, F. Y. QIU, S. BAI, Y. LI, D. M. CHEN, Study of band offset at ZnS/Cu2ZnIVS4(IV=Si,Ge,Sn) heterointerfaces, Optoelectronics and Advanced Materials - Rapid Communications, 12, 5-6, May-June 2018, pp.327-331 (2018).

Submitted at: June 21, 2017

Accepted at: June 7, 2018