Journal
APPLIED PHYSICS LETTERS
Volume 103, Issue 18, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4821433
Keywords
-
Categories
Funding
- U.S. Department of Energy [DE-EE0005329, ECS-0335765]
- U. S. National Science Foundation [CBET-1032955]
- Harvard University's Center for Nanoscale Systems (CNS)
- National Nanotechnology Infrastructure Network (NNIN)
Ask authors/readers for more resources
Band alignment is critical to the performance of heterojunction thin film solar cells. In this letter, we report band alignment studies of SnS/Zn(O,S) heterojunctions with various compositions of Zn(O,S). Valence band offsets (VBOs) are measured by femtosecond laser pump/probe ultraviolet photoelectron spectroscopy (fs-UPS) from which conduction band offsets (CBOs) are calculated by combining with band gaps obtained by optical transmission/reflection measurements. The SnS/ Zn(O,S) heterojunctions with S/Zn ratios of 0.37 and 0.50 have desirable small positive CBOs, while a ratio of 0.64 produces an undesirable large positive CBO. The results are consistent with the device performance of SnS/Zn(O,S) solar cells. (c) 2013 AIP Publishing LLC.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available