Observation of metal precipitates at prebreakdown sites in multicrystalline silicon solar cells

被引：45

作者：

Kwapil, Wolfram ^{[1
]}

Gundel, Paul ^{[1
]}

Schubert, Martin C. ^{[1
]}

Heinz, Friedemann D. ^{[1
]}

Warta, Wilhelm ^{[1
]}

Weber, Eicke R. ^{[1
]}

Goetzberger, Adolf ^{[1
]}

Martinez-Criado, Gema ^{[2
]}

机构：

[1] Fraunhofer Inst Solar Energy Syst ISE, D-79110 Freiburg, Germany

[2] European Synchrotron Radiat Facil, F-38043 Grenoble, France

来源：

APPLIED PHYSICS LETTERS | 2009年 / 95卷 / 23期

关键词：

P-N JUNCTIONS; AVALANCHE BREAKDOWN; SPECTROSCOPY; EMISSION; DEFECTS;

D O I：

10.1063/1.3272682

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The local prebreakdown behavior of a damage etched multicrystalline silicon solar cell produced from virgin grade feedstock was characterized. At the position of micrometer-scaled prebreakdown sites, which correlate with recombination active defects found along grain boundaries, micro-x-ray fluorescence mappings revealed the presence of Fe precipitate colonies. These measurements represent direct evidence that transition metal clusters lead to decreased breakdown voltage and cause soft diode breakdown. (C) 2009 American Institute of Physics. [doi: 10.1063/1.3272682]

引用

页数：3

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