Doping of Cu2ZnSnSe4 solar cells with Na+ or K+ alkali ions

被引：21

作者：

Sahayaraj, Sylvester ^{[1
,2
,4
]}

Brammertz, Guy ^{[1
,2
]}

Vermang, Bart ^{[1
,2
]}

Mule, Aniket ^{[6
]}

Schnabel, Thomas ^{[7
]}

Meuris, Marc ^{[1
,2
]}

Vleugels, Jef ^{[5
]}

Poortmans, Jef ^{[2
,3
,4
]}

机构：

[1] AIMEC Div IMOMEC, Wetenschapspk 1, B-3590 Diepenbeek, Belgium

[2] Hasselt Univ, Inst Mat Res IMO, Wetenschapspk 1, B-3590 Diepenbeek, Belgium

[3] Imec, Kapeldreef 75, B-3001 Leuven, Belgium

[4] Katholieke Univ Leuven, Dept Elect Engn ESAT, Kasteelpk Arenberg 10, B-3001 Heverlee, Belgium

[5] Katholieke Univ Leuven, Dept Mat Engn MTM, Kasteelpk Arenberg 44, B-3001 Heverlee, Belgium

[6] Swiss Fed Inst Technol, LEEK, Dept Mech & Proc Engn D MAVT, Leonhardstr 21, CH-8092 Zurich, Switzerland

[7] Zentrum Sonnenenerg & Wasserstoff Forsch Baden Wu, D-70565 Stuttgart, Germany

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2018年 / 6卷 / 06期

关键词：

RADIATIVE RECOMBINATION; POTENTIAL FLUCTUATIONS; PHOTOLUMINESCENCE; TEMPERATURE; EFFICIENCY; DEPENDENCE; LAYERS;

D O I：

10.1039/c7ta05415g

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：

In this work, the addition of molar concentrations of Na+ and/or K+ in the form of fluorides during the processing of Cu2ZnSnSe4 absorber layers was investigated. The beneficial effect of alkali salts on the performance of CZTSe solar cells has been demonstrated through physical and electrical characterization. A maximum power conversion efficiency of 8.3% has been obtained through controlled addition of Na+ and K+ in the CZTSe absorber as opposed to 6.7% from uncontrolled addition of both. The open circuit voltage in both cases was very much the same but the devices with controlled addition showed lower p-type doping, a low density of charged defects and less band tailing compared to the rest.

引用

页码：2653 / 2663

页数：11

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