Title:
SULFIDE AND PHOTOELECTRIC ELEMENT
Document Type and Number:
WIPO Patent Application WO/2010/095608
Kind Code:
A1
Abstract:
Provided is a sulfide which, when used in, for example, the light-absorbing layer of a solar cell, brings about relatively high levels of multiple properties including conversion efficiency, open-circuit voltage, short-circuit current density, and form factor and attains an excellent balance among properties. Also provided is a photoelectric element formed using the sulfide. The sulfide is characterized in that the sulfide contains copper, zinc, and tin as major components, and that when the Cu/(Zn+Sn) ratio and the Zn/Sn ratio (both being atomic ratios) are expressed by x and y, respectively, and the composition is shown on the (x, y) coordinate system, then the composition of the sulfide (x, y) is on the lines connecting the points A (0.78, 1.32), B (0.86, 1.32), C (0.86, 1.28), D (0.90, 1.23), E (0.90, 1.18), and F (0.78, 1.28) in the order of A→B→C→D→E→F→A or within the range surrounded by these lines.
Inventors:
FUKANO TATSUO (JP)
MOTOHIRO TOMOYOSHI (JP)
KATAGIRI HIRONORI (JP)
MOTOHIRO TOMOYOSHI (JP)
KATAGIRI HIRONORI (JP)
Application Number:
PCT/JP2010/052242
Publication Date:
August 26, 2010
Filing Date:
February 16, 2010
Export Citation:
Assignee:
TOYOTA CHUO KENKYUSHO KK (JP)
INST NAT COLLEGES TECH JAPAN (JP)
FUKANO TATSUO (JP)
MOTOHIRO TOMOYOSHI (JP)
KATAGIRI HIRONORI (JP)
INST NAT COLLEGES TECH JAPAN (JP)
FUKANO TATSUO (JP)
MOTOHIRO TOMOYOSHI (JP)
KATAGIRI HIRONORI (JP)
International Classes:
H01L31/04; C01G19/00; H01M14/00
Domestic Patent References:
| WO2007134843A2 | 2007-11-29 |
Foreign References:
| JP2009026891A | 2009-02-05 | |||
| JP2007269589A | 2007-10-18 | |||
| JP2007018891A | 2007-01-25 | |||
| JP2007284309A | 2007-11-01 |
Other References:
HIRONORI KATAGIRI ET AL.: "Preparation and evaluation of CU2ZnSnS4 thin films by sulfurization of E-B evaporated precursors", SOLAR ENERGY MATERIALS AND SOLAR CELLS, vol. 49, 1997, pages 407 - 414
RYOICHI KIMURA ET AL.: "Doji Sputter Precursor o Mochiita CZTS Hakumaku Taiyo Denchi", IEICE TECHNICAL REPORT, vol. 105, no. 393, 2005, pages 7 - 12
RYOICHI KIMURA ET AL.: "Doji Sputter Precursor o Mochiita CZTS Hakumaku Taiyo Denchi", IEICE TECHNICAL REPORT, vol. 105, no. 393, 2005, pages 7 - 12
Attorney, Agent or Firm:
HATAKEYAMA Fumio et al. (JP)
Fumio Hatakeyama (JP)
Fumio Hatakeyama (JP)
Download PDF: