Jump to main content
Jump to site search

Issue 14, 2017
Previous Article Next Article

The role of Sb in solar cell material Cu2ZnSnS4

Author affiliations


In this study, based on first-principles calculations we report a possible mechanism of efficiency improvement of Sb-doped Cu2ZnSnS4 (CZTS) solar cells from the Sb-related defect point of view. Different from Sb in CuInSe2 which substituted the Cu atomic site and acted as group-13 elements under Cu-poor growth conditions, we find out that Sb prefers to substitute Sn atomic sites and acts as group-14 elements under Cu-poor growth conditions in CZTS. At low Sb concentration, SbSn produces a deep defect level which is detrimental for the solar cell application. At high Sb concentration, Sb 5s states form an isolated half-filled intermediate band at 0.5 eV above the valence band maximum which will increase the photocurrent as well as the solar cell efficiency.

Graphical abstract: The role of Sb in solar cell material Cu2ZnSnS4

Back to tab navigation

Article information

04 Feb 2017
01 Mar 2017
First published
03 Mar 2017

J. Mater. Chem. A, 2017,5, 6606-6612
Article type

The role of Sb in solar cell material Cu2ZnSnS4

X. Zhang, M. Han, Z. Zeng and Y. Duan, J. Mater. Chem. A, 2017, 5, 6606
DOI: 10.1039/C7TA01090G

Social activity

Search articles by author