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Stable CdTe thin film solar cells with a MoO x back‐contact buffer layer
Author(s) -
Yang Ruilong,
Wang Dezhao,
Jeng Mingjer,
Ho Kaiming,
Wang Deliang
Publication year - 2016
Publication title -
progress in photovoltaics: research and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.286
H-Index - 131
eISSN - 1099-159X
pISSN - 1062-7995
DOI - 10.1002/pip.2645
Subject(s) - cadmium telluride photovoltaics , layer (electronics) , materials science , buffer (optical fiber) , solar cell , optoelectronics , schottky barrier , open circuit voltage , absorption (acoustics) , nanotechnology , voltage , composite material , electrical engineering , diode , engineering
MoO x thin films were employed as a buffer layer in the back contact of CdTe solar cells. A monograined CdS layer was employed as the window layer to reduce light absorption. The insertion of a MoO x buffer layer in the back contact greatly reduced the Schottky barrier leading to increased fill factor and open‐circuit voltage. A CdTe solar cell, with an efficiency as high as 14.2%, was fabricated. The use of a MoO x buffer layer made it possible to fabricate high‐efficient CdTe solar cell with much less Cu in the back contact, thus greatly enhancing the cell stability. Copyright © 2015 John Wiley & Sons, Ltd.