Batteries: thermoelectric and photoelectric – Photoelectric – Cells
Reexamination Certificate
2007-10-09
2007-10-09
Olsen, Kaj K. (Department: 1753)
Batteries: thermoelectric and photoelectric
Photoelectric
Cells
C136S261000, C438S097000
Reexamination Certificate
active
10784932
ABSTRACT:
Provided is a multi-element polycrystal formed by cooling a melt containing multiple components while controlling a cooling rate. The multi-element polycrystal is a mixed crystal essentially formed of elements Si and Ge having different absorption wavelength ranges and having a composition represented by Si1-XGeX, in which Ge absorbs light over a longer range of wavelength from a shorter to longer wavelength range than Si, each of the crystal grains of the mixed crystal has a matrix having a plurality of discrete regions dispersed therein, the average matrix composition is represented by Si1-x1Gex1and the average composition of the discrete regions is represented by Si1-x2Gex2where X1<X<X2. Also, provided is a solar-cell polycrystal satisfying high light-absorption efficiency and low cost by using the multi-element polycrystal, a solar cell and a method of manufacturing the solar cell.
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J. G. We
Fujikawa Kozo
Nakajima Kazuo
Pan Wugen
Usami Noritaka
Olsen Kaj K.
President of Tohoku University
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