Low band gap liquid-processed CZTSe solar cell with 10.1% efficiency

Journal Article (Journal Article)

A low band gap liquid-processed Cu2ZnSn(Se1-xS x)4 (CZTSSe) kesterite solar cell with x ≈ 0.03 is prepared from earth abundant metals, yielding 10.1% power conversion efficiency. This champion cell shows a band gap of 1.04 eV, higher minority-carrier lifetime, lower series resistance and lower Voc deficit compared to our previously reported higher band gap (Eg = 1.15 eV; x ≈ 0.4) cell with similar record efficiency. The ability to vary the CZTSSe band gap using sulfur content (i.e., varying x) facilitates the examination of factors limiting performance in the current generation of CZTSSe devices, as part of the thrust to achieve operational parity with CdTe and Cu(In,Ga)(S,Se)2 (CIGSSe) analogs. © 2012 The Royal Society of Chemistry.

Full Text

Duke Authors

Cited Authors

  • Bag, S; Gunawan, O; Gokmen, T; Zhu, Y; Todorov, TK; Mitzi, DB

Published Date

  • May 1, 2012

Published In

Volume / Issue

  • 5 / 5

Start / End Page

  • 7060 - 7065

Electronic International Standard Serial Number (EISSN)

  • 1754-5706

International Standard Serial Number (ISSN)

  • 1754-5692

Digital Object Identifier (DOI)

  • 10.1039/c2ee00056c

Citation Source

  • Scopus