Browse > Article
http://dx.doi.org/10.4313/JKEM.2009.22.12.1023

Electrical Properties and Reliability of the Photo-conductive CdS Thin Films for Flexible Opto-electronic Device Applications  

Hur, Sung-Gi (충남대학교 신소재공학과)
Cho, Hyun-Jin (충남대학교 신소재공학과)
Park, Kyoung-Woo (충남대학교 신소재공학과)
Ahn, Jun-Ku (충남대학교 신소재공학과)
Yoon, Soon-Gil (충남대학교 신소재공학과)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.22, no.12, 2009 , pp. 1023-1027 More about this Journal
Abstract
Cadmium sulfide (CdS) thin film for flexible optical device applications were prepared at $H_2/(Ar+H_2)$ flow ratios on polyethersulfon (PES) flexible polymer substrates at room temperature by radio frequency magnetron sputtering technique. The CdS thin films deposited at room temperature showed a (002) preferred orientation and the smooth surface morphologies. Films deposited at a hydrogen flow ratio of 25% exhibited a photo- and dark-sheet resistance of about 50 and $2.7\;{\times}\;10^5\;{\Omega}/square$, respectively. From the result of the bending test, CdS films exhibit a strong adhesion with the PES polymer substrates and the $Al_2O_3$ passivation layer deposited on the CdS films only shows an increase of the resistance of 8.4% after exposure for 120 h in air atmosphere.
Keywords
Photoconductive sensor; CdS; Sputter; Flexible film; $Al_2O_3$ passivation layer;
Citations & Related Records
연도 인용수 순위
  • Reference
1 C. Leighton, I. Terry, and P. Becla, 'Metal- insulator transition in the persistent photo- conductor Cd1-xMnxTe:In', Europhys. Lett., Vol. 42, No. 1, p. 67, 1998   DOI   ScienceOn
2 S. Albright, B. Ackerman, and J. F. Jordan, 'Efficient CdTe/CdS solar cells and modules by spray processing', IEEE Trans. Electron Devices, Vol. ED-37, No. 2, p. 434, 1990   DOI   ScienceOn
3 J. Kokaj and A. E. Rakhshani, 'Photocurrent spectroscopy of solution-grown CdS films annealed in $CdCl_{2}$ vapor', J. Phys. D: Appl. Phys., Vol. 37, p. 1970, 2004   DOI   ScienceOn
4 B. E. McCandless and S. S. Hegedus, 'Influence of CdS window laters on thin film CdS/CdTe solar cell performance', Proc. 22th IEEE Photovoltaic Specialists Conferences, p. 967, 1991
5 B. S. Moon, J. H. Lee, and H. Jung, 'Comparative studies of the properties of CdS films deposited on different substrates by r.f. sputtering', Thin Solid Films, Vol. 511-512, p. 299, 2006   DOI   ScienceOn
6 S. G. Hur, E. T. Kim, J. H. Lee, G. H. Kim, and S. G. Yoon, 'Characterization of photoconductive CdS thin films prepared on glass substrates for photoconductive sensor applications', J. Vac. Sci. Technol. B, Vol. 26, No. 4, p. 1334, 2008   DOI   ScienceOn
7 S. G. Hur, E. T. Kim, J. H. Lee, G. H. Kim, and S. G. Yoon, 'Enhancement of photosensitivity in CdS thin films incorporated by hydrogen', Electrochemical and Solid- State Letter, Vol. 11, No. 11, p. H176, 2008   DOI   ScienceOn
8 W. Platte, 'LED-induced distributed Bragg reflection microwave filter with fiber- optically controlled change of center frequency via photoconductivity gratings', IEEE- TMTT, Vol. 39, No. 2, p. 359, 1991   DOI   ScienceOn
9 J. Sigh and K. Shimakawa, 'Advances in Amorphous semiconductors', Taylor & Francis, New York London, 2003
10 N. H. Nickel, 'Hydrogen in Semiconductors II', Academic press, San Diego, 1999
11 D. Khokhlov, 'Lead Chalcogenides Physics and Applications', Taylor & Francis, New York London, 2003
12 B. A. Akimov, V. A. Bogoyavlenskiy, L. I. Ryabova, V. N. Vasilkov, and S. P. Zimin, 'Photoconductivity kinetics in high resistivity n-PbTe(Ga) epitaxial films', Semicond. Sci. Technol., Vol. 14, No. 8, p. 679, 1999   DOI   ScienceOn
13 K. H. Keen, H. S. Kim, G. T. Kim, J. S, Lee, B. D, Min, K. A. Cho, M. Y. Sung, and S. S. Kim, 'Photocurrent in ZnO nanowires grown from Au electrodes', Appl. Phys. Lett., Vol. 84, No. 22, p. 4376, 2004   DOI   ScienceOn
14 R. Ghosh, B. Mallik, S. Fujihara, and D. Basak, 'Photoluminescence and photoconductance in annealed ZnO thin films', Chem. Phys. Lett., Vol. 403, No. 4-6, p. 415, 2005   DOI   ScienceOn
15 P. K. Nair, M. T. S. Nair, J. Campos, and L. E. Sansores, 'A critical discussion of the very high photoconductivity in chemically deposited cadmium sulfide thin films: implications for solar cell technology', Solar Cells, Vol. 22, No. 3, p. 211, 1987   DOI   ScienceOn
16 S. Lee, Y. Kuga, and R. A. Mullen, 'Experimental results for a CW-mode optically controlled microwave switch on a silicon-based coplanar waveguide', Microw. Opt. Tech. Lett., Vol. 36, No. 4, p. 257, 2003   DOI   ScienceOn
17 H. Neff, K. J. Bachmann, K. Y. Lay, and R. Kotz, 'Temperature dependent photo- conductivity and photoluminescence of $Cd_{1-x}Mn_{x}$Te', J. of Luminescence, Vol. 36, No. 6, p. 347, 1987   DOI   ScienceOn
18 W. Muller, H. Frey, K. Radley, and K.-H. Schuller, 'CdS/CuxS heterojunctions produced by r.f. sputtering', Thin Solid Film, Vol. 42, No. 3, p. 327, 1979   DOI   ScienceOn
19 D. B. Fraser and H. Melchior, 'Sputter- deposited CdS films with high photo- conductivity through film thickness', J. Appl. Phys., Vol 43, No. 7, p. 3120, 1972   DOI