Valence band offset at MoO 3 /CdTe interface probed by X-ray photoelectron spectroscopy
作者： N.R. Paudel , Y. Yan
DOI: 10.1109/PVSC.2014.6925410
关键词:
摘要: CdTe-based thin-film solar cells fabricated with Cu-free MoO 3 /Au back contacts have achieved cell efficiencies as high 14%. The incorporation of buffer layers improves the open circuit voltage but reduces fill factor (FF) CdTe compared to using Au-only contacts. X-ray photoelectron spectroscopy measurements suggest a 2.75±0.20 eV valence band offset (VBO) between and . Such large VBO explains decrease in FF increase thickness layer.
sci-hub.se 参考文章(8)
Hao Lin, Wei Xia, Hsiang N. Wu, Ching W. Tang, CdS/CdTe solar cells with MoOx as back contact buffers Applied Physics Letters. ,vol. 97, pp. 123504- ,(2010) , 10.1063/1.3489414
N.R. Paudel, A.D. Compaan, Y. Yan, Sputtered CdS/CdTe solar cells with MoO3−x/Au back contacts Solar Energy Materials and Solar Cells. ,vol. 113, pp. 26- 30 ,(2013) , 10.1016/J.SOLMAT.2013.01.041
Lukas Kranz, Rafael Schmitt, Christina Gretener, Julian Perrenoud, Fabian Pianezzi, Alexander R. Uhl, Debora Keller, Stephan Buecheler, Ayodhya N. Tiwari, Progress towards 14% efficient CdTe solar cells in substrate configuration photovoltaic specialists conference. pp. 1644- 1648 ,(2013) , 10.1109/PVSC.2013.6744460
J. C. Bernède, S. Houari, D. Nguyen, P. Y. Jouan, A. Khelil, A. Mokrani, L. Cattin, P. Predeep, XPS study of the band alignment at ITO/oxide (n-type MoO3 or p-type NiO) interface Physica Status Solidi (a). ,vol. 209, pp. 1291- 1297 ,(2012) , 10.1002/PSSA.201127428
Fang Wang, Alan Schwartzman, Alan L. Fahrenbruch, Robert Sinclair, Richard H. Bube, Carl M. Stahle, Kinetics and oxide composition for thermal oxidation of cadmium telluride Journal of Applied Physics. ,vol. 62, pp. 1469- 1476 ,(1987) , 10.1063/1.339653
K.-T. Chen, D. T. Shi, H. Chen, B. Granderson, M. A. George, W. E. Collins, A. Burger, R. B. James, Study of oxidized cadmium zinc telluride surfaces Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. ,vol. 15, pp. 850- 853 ,(1997) , 10.1116/1.580719
Naba Raj Paudel, Chuanxiao Xiao, Yanfa Yan, CdS/CdTe thin‐film solar cells with Cu‐free transition metal oxide/Au back contacts Progress in Photovoltaics. ,vol. 23, pp. 437- 442 ,(2015) , 10.1002/PIP.2446
Hamed Simchi, Brian E. McCandless, T. Meng, Jonathan H. Boyle, William N. Shafarman, MoO 3 back contact for CuInSe 2 -based thin film solar cells MRS Proceedings. ,vol. 1538, pp. 173- 178 ,(2013) , 10.1557/OPL.2013.1018