TITLE

Evidence for generalized Kirchhoff’s law from angle-resolved electroluminescence of high efficiency silicon solar cells

AUTHOR(S)
Ferraioli, L.; Maddalena, P.; Massera, E.; Parretta, A.; Green, M. A.; Wang, A.; Zhao, J.
PUB. DATE
September 2004
SOURCE
Applied Physics Letters;9/27/2004, Vol. 85 Issue 13, p2484
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The angular distribution of infrared radiation, emitted by high efficiency single-crystalline silicon solar cells, was analyzed. Measurements were performed on cells with planar and inverted-pyramids surfaces, both showing integral emissions that approach the cosine function in the 0°-90° interval. Textured cell maintains the cosine distribution at the different wavelengths; planar device shows a distribution, which deviates from the cosine function at increasing wavelength. Correspondence between emission and absorption properties was demonstrated valid as a function of emission/ absorption angle. From the angular distribution of electroluminescence light, the devices absorption properties for incident light with directions different from the surface normal were estimated.
ACCESSION #
14546627

 

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