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Good Stability of Protocrystalline Silicon Multilayer Solar Cells Against Light Irradiation Originating from Vertically Regular Distribution of Isolated Nano-Sized Silicon Grains

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6 Author(s)
Seung Yeop Myong ; Division of Electrical Engineering, Department of Electrical Engineering & Computer Science, KAIST, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea; Department of Physical Electronics, TIT 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8552, Japan ; Seong Won Kwon ; Joong Hwan Kwak ; Koeng Su Lim
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Photoluminescence and Fourier transform infrared spectra measured at room temperature, and transmission electron microscopy micrographs produce strong evidence that nano-sized silicon grains are embedded in alternately hydrogen-diluted protocrystalline silicon multilayers. We suggest that the vertically regular distribution of isolated nano-sized silicon grains caused by the repeatedly layered structure, as well as the improved structural order in the a-Si:H matrix reduces "slow" metastable defects, resulting in a fast light-induced stabilization with a low degradation

Published in:

2006 IEEE 4th World Conference on Photovoltaic Energy Conference  (Volume:2 )

Date of Conference:

May 2006