Paper Title:
Investigation of Defects in Solar Cells and Wafers by Means of Magnetic Measurements
  Abstract

Elaborated characterization tools play an important role for the further improvement of solar material and the development of solar cells. Besides the huge variety of highly advanced methods mainly based on optical and electrical measurements, the direct measurement of surface currents by the detection of their induced magnetic fields has gained less attention. The novel method current-analysis-by-inductive-coils (CAIC) based on an inductive coil detector and is reviewed and compared with already established methods, which are light-beam-induced-current (LBIC) and dark-lock-in-thermography (LIT). The detector reveals complementary information at high resolution. The LIT measurements depicted shunting defects in forward and reverse current. Because of the high spatial resolution of the CAIC measurement technique it was determinable that in some cases the positions of current sinks in the CAIC maps are not corresponding with the microstructure. The analyses of the superpositions reveals macroscopic precipitates like SiC and Si3N4 filaments and clusters as an origin of some of the shunts.

  Info
Periodical
Solid State Phenomena (Volumes 178-179)
Chapter
Chapter 8: Defect and Impurity Characterization
Edited by
W. Jantsch and F. Schäffler
Pages
331-340
DOI
10.4028/www.scientific.net/SSP.178-179.331
Citation
R. Buchwald, S. Köstner, F. Dreckschmidt, H.J. Möller, "Investigation of Defects in Solar Cells and Wafers by Means of Magnetic Measurements", Solid State Phenomena, Vols. 178-179, pp. 331-340, 2011
Online since
August 2011
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Price
$32.00
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