TY - GEN
T1 - Structure and property of directionally grown SiGe multicrystals with microscopic compositional distribution
AU - Fujiwara, Kozo
AU - Takahashi, Tatsuya
AU - Usami, Noritaka
AU - Ujihara, Toru
AU - Sazaki, Gen
AU - Nakajima, Kazuo
PY - 2003
Y1 - 2003
N2 - Mullticrystalline SiGe with microscopic compositional distributions is an attractive material for a new high efficiency solar cell because it has a possibility to absorb the near infrared light, which is transparent to Si. In this study, structural property and absorption coefficient was investigated for mc-SiGe and those were compared with mc-Si. Columnar structure for mc-SiGe was obtained using directional growth method. It was found that the preferential crystallographic orientation of mc-SiGe is {110} plane, which is different from mc-Si. By measuring the absorption coefficient, we demonstrated that the introduction of microscopic compositional distribution in mc-SiGe is an effective way to increase absorption coefficient in longer wavelength. Mc-SiGe is therefore concluded to be promising for enabling the realization of low-cost and highly efficient solar cells.
AB - Mullticrystalline SiGe with microscopic compositional distributions is an attractive material for a new high efficiency solar cell because it has a possibility to absorb the near infrared light, which is transparent to Si. In this study, structural property and absorption coefficient was investigated for mc-SiGe and those were compared with mc-Si. Columnar structure for mc-SiGe was obtained using directional growth method. It was found that the preferential crystallographic orientation of mc-SiGe is {110} plane, which is different from mc-Si. By measuring the absorption coefficient, we demonstrated that the introduction of microscopic compositional distribution in mc-SiGe is an effective way to increase absorption coefficient in longer wavelength. Mc-SiGe is therefore concluded to be promising for enabling the realization of low-cost and highly efficient solar cells.
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M3 - Conference contribution
AN - SCOPUS:6344249147
SN - 4990181603
SN - 9784990181604
T3 - Proceedings of the 3rd World Conference on Photovoltaic Energy Conversion
SP - 158
EP - 160
BT - Proceddings of the 3rd World Conference on Photovoltaic Energy Conversion
A2 - Kurokawa, K.
A2 - Kazmerski, L.L.
A2 - McNeils, B.
A2 - Yamaguchi, M.
A2 - Wronski, C.
T2 - Proceddings of the 3rd World Conference on Photovoltaic Energy Conversion
Y2 - 11 May 2003 through 18 May 2003
ER -