Title:
TARGET FOR LIGHT ABSORBING LAYER OF THIN FILM SOLAR CELL, METHOD FOR MANUFACTURING SAME AND THIN FILM SOLAR CELL
Document Type and Number:
WIPO Patent Application WO/2013/168845
Kind Code:
A1
Abstract:
The present invention provides a method for manufacturing a target to be used in depositing a CZTSe(Cu-Zn-Sn—Se)-based light absorbing thin film of a solar cell. The method comprises: (1) a step of preparing Cu, Zn, Sn and Se powder at a mole ratio of 2+α:1+β:1:4; (2) a step of introducing the Cu, Zn, Sn and Se powder and metal balls into a container and stirring the powder to synthesize CZTSe material by mechanical force; (3) a step of pressurizing and firing the synthesized CZTSe material to produce pellets having shapes corresponding to the shape of the target; and (4) a step of performing a heat treatment on the produced pellets to produce a final single CZTSe target. The final single CZTSe target has a composition of Cu(2+a)Zn(1+β)SnSe4 (0≤α<1, 0≤β≤1, where at least one of α and β is larger than zero).
Inventors:
CHO YONG SOO (KR)
JO YEON HWA (KR)
YEON DEUK HO (KR)
JO YEON HWA (KR)
YEON DEUK HO (KR)
Application Number:
PCT/KR2012/003960
Publication Date:
November 14, 2013
Filing Date:
May 18, 2012
Export Citation:
Assignee:
UNIV YONSEI IACF (KR)
CHO YONG SOO (KR)
JO YEON HWA (KR)
YEON DEUK HO (KR)
CHO YONG SOO (KR)
JO YEON HWA (KR)
YEON DEUK HO (KR)
International Classes:
H01L31/18; C23C14/34; H01L31/042
Foreign References:
| US20120067408A1 | 2012-03-22 | |||
| JP2009026891A | 2009-02-05 | |||
| US20110094557A1 | 2011-04-28 | |||
| JP2012059847A | 2012-03-22 |
Other References:
WIBOWO, R. A. ET AL.: "Single step preparation of quaternary Cu2ZnSnSe4 thin films by RF magnetron sputtering from binary chalcogenide targets", J. PHYS. CHEM. SOLIDS, 19 May 2007 (2007-05-19), pages 1908 - 1913
Attorney, Agent or Firm:
LEE, Chae-Hyung et al. (#501 SeongAm B/D115-22, Nonhyun-2dong, Kangnam-gu, Seoul 135-733, KR)
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