Characterization of evaporated solid-phase crystallized silicon thin-film solar cells on glass

Following our previous study on the material-quality limiting factors of evaporated solid-phase crystallized (SPC) poly-Si thin films fabricated on planar glass for photovoltaic applications, we extend our study to investigate the impurity levels, optical properties, transport properties, and device...

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Bibliographic Details
Main Authors: Liu, F., Romero, M.J., Jones, K.M., Kunz, O., Wong, J., Reedy, R.C., Aberle, A.G., Al-Jassim, M.M.
Format: Conference Proceeding
Language:English
Subjects:
Crystallization
Glass
Impurities
Optical films
Photovoltaic cells
Photovoltaic systems
Semiconductor thin films
Silicon
Solar power generation
Thin film devices
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Summary:Following our previous study on the material-quality limiting factors of evaporated solid-phase crystallized (SPC) poly-Si thin films fabricated on planar glass for photovoltaic applications, we extend our study to investigate the impurity levels, optical properties, transport properties, and device performance of so-called ¿EVA¿ (EVAporated Si) solar cells. These potentially cost-effective cells are systematically characterized with electron microscopy-based techniques, external quantum efficiency, and standard current-voltage measurements. We conclude that 5% efficient cells are now attainable, and much room remains for further improving device performance. We are confident that 10%-efficient EVA solar cells will be realized in the future, with proper metallization schemes, good light trapping, and improved poly-Si film quality.
ISSN:0160-8371
DOI:10.1109/PVSC.2009.5411644