Synthesis and characterization of CuInSe2 thin films for photovoltaic cells by a solution-based deposition method

다국어 초록 (Multilingual Abstract)

Polycrystalline CuInSe2 thin films were deposited by a novel solution-based continuous flow microreactor (CFM) method at low temperature. In order to investigate the effect of the Cu to In mole ratio on the film formation, the concentrations of indium reagent were varied in the preparation of precursor solutions.
The estimated optical band gaps were ~1.54 eV and ~1.25 eV for the as-deposited and the annealed CuInSe2 thin films which could be a result of quantum size effect. A tetragonal chalcopyrite structure of CuInSe2 was identified in XRD analysis. From the XRD analysis, it was found that the crystal growth of the as-deposited and the annealed films are affected by the molar concentration of indium reagents. The film deposited from a solution with 0.025 M of InCl3 shows the best crystallinity. The film thickness reaches around 2.5 ㎛ after only a 7 min of deposition time which will provide good throughput for thin film PV manufacturing.

참고문헌 (Reference)

1 A. Goetzberger, R 40 : 1-46, 2003

2 B.J. Stanbery, 27 (27): 73-117, 2002

3 C.D. Lokhande, A111 (A111): 17-40, 1989

4 M. Kemell, University of Helsinki 2003

5 G.P. Vassilev, 82 : 905-910, 2003

6 A.H. Moharram, 172 : 61-67, 2001

7 R.R. Pai, 473 : 208-212, 2005

8 Y.-J. Chang, 9 (9): G174-G177, 2006

9 S.-Y. Han, 10 (10): K1-K5, 2007

10 P.H. Mugdur, 154 (154): D482-D488, 2007

11 B. Canava, 202 (202): 8-14, 2002

12 S. Gorer, 99 (99): 16442-16448, 1995

13 Y.-J. Chang, 12 (12): H244-H247, 2009

14 A.C. Rastogi, 357 : 179-188, 1999

15 R.N. Bhattacharya, 89 (89): 253503-, 2006

16 Ji Young Jung, "The growth of the flower-like ZnO structure using a continuous flow microreactor" 한국물리학회 8 (8): 720-724, 2008

17 D. Briggs, "Practical Surface Analysis, Auger and X-ray Photoelectron Spectroscopy, second ed., vol. 1" John Wiley & Sons 1993

18 Doo Hyoung Lee, "Highly Uniform ZnS Thin Film Through the Continuous Flow Reaction Process" 한국물리학회 53 (53): 102-105, 2008

19 C.D. Wagner, "Handbook of X-ray Photoelectron Spectroscopy" Minnesota 1978

20 A. Rochefort, "European workshop on refractory metals and silicides" 294 : 43-52, 1993

21 N.N. Greenwood, "Chemistry of the Elements" Pergamon Press 1986