Effects of heavy alkali elementsin Cu(In,Ga)Se2 solar cells with efficiencies up to 22.6%

被引：1370

作者：

Jackson, Philip ^{[1
]}

Wuerz, Roland ^{[1
]}

Hariskos, Dimitrios ^{[1
]}

Lotter, Erwin ^{[1
]}

Witte, Wolfram ^{[1
]}

Powalla, Michael ^{[1
]}

机构：

[1] Zentrum Sonnenenergie & Wasserstoff Forsch Baden, Ind Str 6, D-70565 Stuttgart, Germany

来源：

PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS | 2016年 / 10卷 / 08期

关键词：

CIGS; thin-film solar cells; high efficiency; alkali elements; THIN-FILMS; ATOM-PROBE; SODIUM; ENHANCEMENT; NA;

D O I：

10.1002/pssr.201600199

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on the use and effect of the alkali elements rubidium and caesium in the place of sodium and potassium in the alkali post deposition treatment (PDT) as applied to Cu(In,Ga)Se-2 (CIGS) solar cell absorbers. In order to study the effects of the different alkali elements, we have produced a large number of CIGS solar cells with high efficiencies resulting in a good experimental resolution to detect even small differences in performance. We examine the electrical device parameters of these fully functional devices and observe a positive trend in the I-V parameters when moving from devices without PDT to KF-, RbF-, and eventually to CsF-PDT. A diode analysis reveals an improved diode quality for cells treated with heavier alkalis. Furthermore, secondary ion mass spectrometry (SIMS) measurements reveal a competitive mechanism induced within the class of alkali elements in the CIGS absorber induced by the alkali post deposition treatment.

引用

页码：583 / 586

页数：4

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