Enhanced external quantum efficiency from Cu2ZnSn(S, Se)4 solar cells prepared from nanoparticle inks

被引：6

作者：

Qu, Yongtao ^{[1
]}

Zoppi, Guillaume ^{[1
]}

Peter, Laurence M. ^{[2
]}

Jourdain, Sophie ^{[1
]}

Beattie, Neil S. ^{[1
]}

机构：

[1] Northumbria Univ, Dept Math Phys & Elect Engn, Newcastle Upon Tyne NE1 8ST, Tyne & Wear, England

[2] Univ Bath, Dept Chem, Bath BA2 7AY, Avon, England

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2018年 / 57卷 / 08期

基金：

英国工程与自然科学研究理事会;

关键词：

THIN-FILMS; PERFORMANCE;

D O I：

10.7567/JJAP.57.08RC01

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Cu2ZnSn(S,Se)(4) (CZTSSe) thin film photovoltaic absorber layers are fabricated by selenizing Cu2ZnSnS4 (CZTS) nanoparticle thin films in a selenium rich atmosphere. The selenium vapor pressure is controlled to optimize the morphology and quality of the CZTSSe thin film. The largest grains are formed at the highest selenium vapor pressure of 226 mbar. Integrating this photovoltaic absorber layer in a conventional thin film solar cell structure yields a champion short circuit current of 37.9 mA/cm(2) without an antireflection coating. This stems from an improved external quantum efficiency characteristic in the visible and near-infrared part of the solar spectrum. The physical basis of this improvement is qualitatively attributed to a substantial increase in the minority carrier diffusion length. (C) 2018 The Japan Society of Applied Physics

引用

页数：6

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