Achieving high open-circuit voltage in efficient kesterite solar cells via lanthanide europium ion induced carrier lifetime enhancement

被引：53

作者：

Chen, Xingye ^{[1
]}

Zhao, Yunhai ^{[1
,2
]}

Ahmad, Nafees ^{[1
]}

Zhao, Jun ^{[1
]}

Zheng, Zhuanghao ^{[1
]}

Su, Zhenghua ^{[1
]}

Peng, Xiaogang ^{[1
]}

Li, Xuejin ^{[3
]}

Zhang, Xianghua ^{[2
]}

Fan, Ping ^{[1
]}

Liang, Guangxing ^{[1
]}

Chen, Shuo ^{[1
]}

机构：

[1] Shenzhen Univ, Shenzhen Key Lab Adv Thin Films & Applicat, Key Lab Optoelect Devices & Syst,Minist Educ & Gua, Coll Phys & Optoelect Engn,Natl Engn Lab Big Data, Shenzhen 518060, Peoples R China

[2] Univ Rennes, CNRS, UMR 6226, ISCR, F-35000 Rennes, France

[3] Chinese Univ Hong Kong Shenzhen, Sch Sci & Engn, Shenzhen 518060, Peoples R China

来源：

NANO ENERGY | 2024年 / 124卷

基金：

中国国家自然科学基金;

关键词：

CZTSSe solar cells; Eu ions; Cation doping; Carrier lifetime; Open-circuit voltage; AG; DEFECTS; IDENTIFICATION; ELIMINATION; CU2ZNSNS4;

D O I：

10.1016/j.nanoen.2024.109448

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Short carrier lifetimes is a key challenge limiting the open -circuit voltage ( V OC ) and power conversion efficiency (PCE) of kesterite Cu 2 ZnSn(S,Se) 4 (CZTSSe) solar cells. In this work, for the first time, lanthanide europium (Eu) ions have been introduced into Ag-incorporated CZTSSe absorber layer, which can modify the selenization reaction pathway during the initial selenization process, leading to high -quality (Ag, Eu)-CZTSSe absorber with large compact crystal grains and benign surface potential fluctuations. This innovative absorber engineering can also optimize defects dynamics with less detrimental defects and defects -assisted non -radiative recombination. Thus, significantly enhanced minority carrier lifetimes from 0.97 to 3.15 ns can be achieved, representing one of the top values among various bulk and/or interface engineering treated CZTSSe. The champion CZTSSe thin-film solar cell exhibits an impressive V OC of 545.6 mV, accompanied with a stimulating increase in PCE from 10.68% to 13.30%. These findings underscore the potential of lanthanide cation doping to drive significant advancements in CZTSSe photovoltaic technology, and therefore promoting its further development and future applications.

引用

页数：12

共 60 条

[21] The role of Ag in aqueous solution processed (Ag,Cu)2ZnSn(S,Se)4 kesterite solar cells: antisite defect elimination and importance of Na passivation [J].