Reflected-light, photoluminescence and OBIC imaging of solar cells using a confocal scanning laser MACROscope/microscope

This paper describes a confocal scanning beam MACROscope/Microscope which can image specimens up to 7 × 7 cm in size using reflected light, photoluminescence and optical beam induced current. The MACROscope provides a 10 μm spot size at various wavelengths and generates 512 × 512 pixel images in les...

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Bibliographic Details
Published in:Solar energy materials and solar cells 1996-12, Vol.44 (4), p.439-450
Main Authors: Ribes, A.C., Damaskinos, S., Tiedje, H.F., Dixon, A.E., Brodie, D.E.
Format: Article
Language:English
Subjects:
Confocal
Macroscope
OBIC
Photoluminescence
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Summary:This paper describes a confocal scanning beam MACROscope/Microscope which can image specimens up to 7 × 7 cm in size using reflected light, photoluminescence and optical beam induced current. The MACROscope provides a 10 μm spot size at various wavelengths and generates 512 × 512 pixel images in less than 5 s. When used in combination with a conventional confocal scanning laser microscope sub-micron spot sizes become possible providing resolutions as high as 0.25 μm laterally and 0.5 μm axially in reflected light. The main function of this imaging system is to spatially resolve any defects within solar cells and similar devices. Several reflected-light, photoluminescence and OBIC images of CdS CuInSe 2 and CdZnS CuInSe 2 thin film solar cells are presented.
ISSN:0927-0248
1879-3398
DOI:10.1016/S0927-0248(95)00156-5