Title:
THIN FILM COMPOUND SOLAR CELL
Document Type and Number:
WIPO Patent Application WO/2011/036717
Kind Code:
A1
Abstract:
Disclosed is a thin film compound solar cell made from a composition of materials that contains as few harmful elements, e.g., Se or Cd, and rare elements, e.g., In or Ga, as possible, while maintaining high conversion efficiency.
The thin film compound solar cell consists at least of a substrate, a back electrode provided on the aforementioned substrate, an extraction electrode provided on the aforementioned back electrode, a light absorption layer provided on the aforementioned back electrode, a buffer layer provided on the aforementioned light absorption layer, a transparent electrode layer provided on the aforementioned buffer layer, an antireflective film provided on the aforementioned transparent electrode layer, and an extraction electrode provided on the aforementioned transparent electrode layer, and is characterized in that the aforementioned light absorption layer is Cu(Al1–x–yGaxIny)(Te1–zOz)2 (wherein x and y are in the range in (numeric formula 1) and z=0, or x and y are in the range in (numeric formula 2) and 0.001 ≤ z ≤ 0.0625), and the aforementioned compound has a chalcopyritic crystalline structure.
(1)
(2)
Inventors:
NAKAGAWA NAOYUKI
HOTTA YASUYUKI
SAKURADA SHINYA
NISHIDA YASUTAKA
ITOH SATOSHI
HOTTA YASUYUKI
SAKURADA SHINYA
NISHIDA YASUTAKA
ITOH SATOSHI
Application Number:
PCT/JP2009/004842
Publication Date:
March 31, 2011
Filing Date:
September 25, 2009
Export Citation:
Assignee:
TOSHIBA KK (JP)
NAKAGAWA NAOYUKI
HOTTA YASUYUKI
SAKURADA SHINYA
NISHIDA YASUTAKA
ITOH SATOSHI
NAKAGAWA NAOYUKI
HOTTA YASUYUKI
SAKURADA SHINYA
NISHIDA YASUTAKA
ITOH SATOSHI
International Classes:
H01L31/04
Foreign References:
| JP2007123721A | 2007-05-17 | |||
| JP2009117431A | 2009-05-28 |
Other References:
J.C.BERNEDE ET AL.: "On the influence of oxygen contamination on the properties of CuAlX2(X=Se, Te)", JOURNAL OF MATERIALS SCIENCE, vol. 36, 2001, pages 87 - 92, XP019209396, DOI: doi:10.1023/A:1004894825543
TAKASHI MINEMOTO: "CuGa(Te,Se)2 Usumaku no Sakusei to Taiyo Denchi eno Oyo", NAOJI IWATANI KINEN ZAIDAN KENKYU HOKOKUSHO, vol. 29, 2000, pages 84 - 86
I.V.BODNAR: "Optical and Thermal Properties of CuAlxInl-xTe Solid Solutions", SEMICONDUCTORS, vol. 37, no. 11, 2003, pages 1247 - 1251
TAKASHI MINEMOTO: "CuGa(Te,Se)2 Usumaku no Sakusei to Taiyo Denchi eno Oyo", NAOJI IWATANI KINEN ZAIDAN KENKYU HOKOKUSHO, vol. 29, 2000, pages 84 - 86
I.V.BODNAR: "Optical and Thermal Properties of CuAlxInl-xTe Solid Solutions", SEMICONDUCTORS, vol. 37, no. 11, 2003, pages 1247 - 1251
Attorney, Agent or Firm:
MATSUYAMA, Masayuki et al. (JP)
Mitsuyuki Matsuyama (JP)
Mitsuyuki Matsuyama (JP)
Download PDF: