The role of stacking faults for the formation of shunts during potential-induced degradation of crystalline Si solar cells

被引：97

作者：

Naumann, Volker ^{[1
]}

Lausch, Dominik ^{[1
]}

Graff, Andreas ^{[2
]}

Werner, Martina ^{[1
]}

Swatek, Sina ^{[1
]}

Bauer, Jan ^{[3
]}

Haehnel, Angelika ^{[3
]}

Breitenstein, Otwin ^{[3
]}

Grosser, Stephan ^{[1
]}

Bagdahn, Joerg ^{[1
]}

Hagendorf, Christian ^{[1
]}

机构：

[1] Fraunhofer Ctr Silicon Photovolta CSP, D-06120 Halle, Germany

[2] Fraunhofer Inst Mech Mat IWM, D-06120 Halle, Germany

[3] Max Planck Inst Microstruct Phys, D-06120 Halle, Germany

来源：

PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS | 2013年 / 7卷 / 05期

关键词：

potential-induced degradation; solar cells; crystals; silicon; stacking faults; sodium; SILICON;

D O I：

10.1002/pssr.201307090

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Mono- and multicrystalline solar cells have been stressed by potential-induced degradation (PID). Cell pieces with PID-shunts are imaged by SEM using the EBIC technique in plan view as well as after FIB cross-section preparation. A linear shaped signature is found in plan-view EBIC images at every potential-induced shunt position on both mono- and multicrystalline solar cells. Cross-sectional SEM and TEM images reveal stacking faults in a {111} plane. Combined TEM/EDX measurements show that the stacking faults are strongly decorated with sodium. Thus, the electric conductivity of stacking faults is assumed to arise under the influence of sodium ion movement through a high electric field across the SiNx anti-reflective layer, resulting in PID. ((c) 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

引用

页码：315 / 318

页数：4

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