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Efficiency Enhancement of Cu 2 ZnSn(S,Se) 4 Solar Cells via Alkali Metals Doping
Author(s) -
Hsieh YaoTsung,
Han Qifeng,
Jiang Chengyang,
Song TzeBin,
Chen Huajun,
Meng Lei,
Zhou Huanping,
Yang Yang
Publication year - 2016
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201502386
Subject(s) - alkali metal , materials science , doping , solar cell , inorganic chemistry , chemical engineering , optoelectronics , organic chemistry , chemistry , engineering
Doping of alkali metals in precursor solutions demonstrates an effective strategy to achieve high efficiency Cu 2 ZnSn(S,Se) 4 solar cells. The properties of doped films are related to alkali metal radius. Smaller alkali atoms are beneficial for increasing carrier concentration, whereas larger atoms are conducive to grain growth. Over 8% efficiency of K‐doped Cu 2 ZnSn(S,Se) 4 solar cell with optimized CdS thickness is realized.