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http://dx.doi.org/10.4313/JKEM.2005.18.3.199

Characterization of CdS Thin Films and CdS/CdTe Heterojunction Prepared by Different Techniques  

Lee, Jae-Hyeong (군산대학교 전자정보공학부)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.18, no.3, 2005 , pp. 199-205 More about this Journal
Abstract
Polycrystalline cadmium sulfide(CdS) thin films were deposited on glass substrate by chemical bath deposition(CBD) and vacuum evaporation (VE) techniques. VE-CdS films consisted primarily of hexagonal phase, whereas CBD CdS films containing primarily the cubic form. VE-grown films were shown to have better crystallinity than CBD-grown films. The grain size of the CBD films is smaller than the ones of VE films. VE-CdS films exhibited relatively high transmittance in the above-gap region and band gap compared with CBD films. However, CdTe solar cells with these low quality CBD-CdS layers yield higher and more stable characteristics. Current-voltage-temperature measurements showed that the current transport for both cells was controlled by both tunneling and interface recombination but the cells with CBD-CdS displayed less tunneling.
Keywords
Cadmium sulphide; chemical bath deposition; Vacuum evaporation; solar cells;
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1 A. Ashour, N. El-Kadry, and S. A. Mahmoud, 'On the electrical and optical properties of CdS films thermally deposited by a modified source', Thin Solid Films, Vol. 269, p. 117, 1995
2 H. Bayhan and C. Ercelebi, 'Electrical characterization of vacuum-deposited n-CdS/ p-CdTe heterojunction devices', Semicond. Sci. Technol., Vol. 12, p. 600, 1997
3 이재형, 송우창, 남준현, 박용관, 신성호, 박광자, 'CdS/CdTe 태양전지 특성에 미치는 CdTe 박막의 기판온도 영향에 관한 연구', 전기전자재료학회 논문지 , 10권,4호, p. 369, 1997
4 Paul O'Brien and Tahir Saeed, 'Deposition and characterization of cadmium sulfide thin films by chemical bath deposition', J. Crystal Growth, Vol. 158, p. 497, 1996
5 C. Guillen, M. A. Martinez, and J. Herrero, 'Accurate control of thin film CdS growth process by adjusting the chemical bath deposition parameters', Thin Solid Films, Vol. 335, p. 37, 1998
6 T. L. Chu, Shirley S. Chu, N. Schultz, C. Wang, and C. Q. Wu, 'Solution-grown dadmium sulfide films for photo voltaic devices', J. Electrochem. Soc., Vol. 139, No. 9, p. 2443, 1992
7 S. K. Das, 'Variation of properties of electrodeposited CdS/CdTe solar cells deposited onto different transparent conducting oxide substrates', Thin Solid Films, Vol. 226, p. 259, 1993
8 W. A. Miller, L. C. Olsen, IEEE Trans. Electron. Devices, Vol. 31, p. 654, 1984
9 G. H. Bauer, 'Thin film solar cell materials', Applied Surface Science, Vol. 70/71, p. 650, 1993
10 T. L. Chu and Shirley S. Chu, 'Recent progress in thin-film cadmium telluride solar cells', Progress in photovoltaics research and application, Vol. 1, p. 31, 1993
11 K. W. Mitchell, A. L. Fahrenbruch, and R. H. Bube, 'Photovoltaic determination of optical-absorption coefficient in CdTe', J. Appl. Phys., Vol. 48, p. 829, 1977
12 K. E. Assali, M. Boustani, A. Khiara, T. Bekkay, A. Outzourthit, E. L. Ameziane, and J. C Bernade, J. Pouzet, Phys. Stat Solid A, Vol. 178, p. 701, 2000
13 이재형, D. Mangalaraj, 이준신, 'CdS 박막의 구조적 및 광학적 물성에 미치는 아르곤 및 질소 이온 주입 효과', 전기전자재료학회논문지, 15권, 6호, p. 471, 2002
14 A. I. Oliva, R. Castro-Rodriguez, O. SolisCanto, V. Sosa, P. Quintana, and J. L. Pena, 'Comparison of properties of CdS thin films grown by two techniques', Applied Surface Science, Vol. 205, p. 56, 2003
15 Kodigala Subba Ramaiah, V. Sundara Raja, and Maheshwar Sharon, 'Optical and structural investigations on spray-deposited CdS films', J. Mater. Sci. Materials in Electronics, Vol. 9, p. 261. 1998
16 H. Sakai, T. Tamaru, T. Sumomogi, H. Ezumi, and B. Ullrich, 'Crystal direction of CdS thin film produced by laser ablation', Jpn. J. Appl. Phys., Vol. 37, No. 7A, p. 4149, 1998
17 O. Zelaya - Angel, J. J. Alvarado-Gil, R. Lozada-Morales, H. Vargas, and A. Ferreira da Silva, 'Band-gap shift in CdS semiconductor by photoacoustic spectroscopy: Evidence of a cubic to hexagonal lattice transition', Appl, Phys. Lett., Vol. 64, p. 291, 1994
18 J. -B. Yoo, A. L. Fahrenbruch, and R. H. Bube, 'Transport mechanisms in ZnO/CdS/ $CuInSe_2$ solar cells', J. Appl. Phys., Vol. 68, p. 4694, 1990
19 M. Kobayashi, S. Nakamura, K. Kitamura, H. Umeya, A. Jia, A. Yoshikawa, M. Shimotomai, Y. Kato, and K. Takahashi, 'Luminescence properties of CdS quantum dots on ZnSe', J. Vac. Sci. Technol. B, Vol. 17, p. 2005, 1999
20 Y. Shiraki, T. Shimada, and K. F. Komatsubara, 'Ion implantation of nitrogen into cadmium sulfide', J. Appl. Phys., Vol. 43, p. 710, 1972