Premium
Nanoparticle‐Based Cu 2 ZnSn(S,Se) 4 Solar Cells With a 9.1% Efficiency Obtained by an Optimization of Sintering Process
Author(s) -
Zhang Yiwen,
Satake Tetsuo,
Furuta Kaoru,
Yin Ming,
Sugimoto Kanta,
Suyama Naoki,
Yamada Akira
Publication year - 2017
Publication title -
solar rrl
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.544
H-Index - 37
ISSN - 2367-198X
DOI - 10.1002/solr.201700063
Subject(s) - sintering , materials science , nanoparticle , layer (electronics) , solar cell , chemical engineering , coating , selenium , graphite , thin film solar cell , metallurgy , energy conversion efficiency , nanotechnology , optoelectronics , engineering
The sintering process of Cu 2 ZnSn(S,Se) 4 (CZTSSe) films coated on Mo substrates is optimized by using a selenium/sulfur mixture atmosphere and a designed graphite box. Structural characterization indicates that this optimization is advantageous in reducing the thickness of high resistance Mo(S,Se) 2 layer. In addition, Cu content contained in the CdS layer is significantly decreased compared with that obtained by the selenium sintering. An active area efficiency of 9.1% CZTSSe solar cell (without anti‐reflective coating and light soaking) is achieved, demonstrating that the improvement of the Mo/CZTSSe and CZTSSe/CdS interfaces leads to an increased conversion efficiency.