Optoelectronic Properties of Cadmium Sulfide Thin Films Deposited by Thermal Evaporation Technique

Abstract:

The substrate temperature in depositions of thin films plays a vital role in the characteristics of deposited films. We studied few characteristics of cadmium sulphide thin film deposited at different temperature (150°C-300°C) on corning 7059 glass substrate. We measured transmittance, absorbance, band gap and reflectance via UV spectroscopy. It was found that the transmittance for 300nm to 1100nm was greater than 80%. The resistivity and mobility was calculated by Vander Pauw method which were 10-80 cm and 2-60 cm²V^-1S^-1 respectively. The thermoelectric properties of the film were measured by hot and cold probe method which shows the N-type nature of the film.

• Periodical: Key Engineering Materials (Volumes 510-511)
• Pages: 177-185
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.510-511.177
• Online since: May 2012
• Authors: N. Ali, M.A. Iqbal, S.T. Hussain, M. Waris, S.A. Munair
• Keywords: Absorbance, Bandgap, Efficiency, Photoconductivity, Photovoltaic (PV), Reflectance, Resistivity, Thin Film, Transmittance

References

[1] Arturo Morales-Acevedo, Can we improve the record efficiency of CdS/CdTe solar cells? Solar Energy Materials and Solar Cells, Volume 90 (2006).

DOI: 10.1016/j.solmat.2006.02.019

[2] D. Ssaikia, P. K. Gogoi, P. K. Saikia, Structural and optical properties of nanostructured CdS thin films deposited thin films deposited at different preparative conditions, Chalcogenide Letters, Vol. 7, (2010), p.317 – 324.

[3] Z. Kafafi, P. Lane(Eds), Organic Photovoltaic IV, Spve, Bellingham, WA, (2004).

[4] S. Sun. N. Sariciftic (Eds), Organic Photovoltic, Mechenism materials and Devices, Marcel Dekker, New York, (2004).

[5] Lianghuan Feng, Jingquan Zhang , Bing Li, Wei Cai, Yaping Cai, Lili Wu, Wei Li, Jiagui Zheng, Qiang Yan, Genpei Xia, Daolin Cai, The electrical, optical properties of CdTe polycrystalline thin films deposited under Ar–O2 mixture atmosphere by close-spaced sublimation. Thin Solid Films, Volume 491, Issues 1-2, 22 November 2005, Pages 104-109.

DOI: 10.1016/j.tsf.2005.05.043

[6] K. Premaratne, S.N. Akuranthilaka, I.M. Dharmadasa, A.P. Samantilleka, Electrodeposition using non-aqueous solutions at 170 °C and characterisation of CdS, CdSxSe(1−x) and CdSe compounds for use in graded band gap solar cells. Renewable energy, Vol. 29, issue 4, (2004).

DOI: 10.1016/j.renene.2003.08.002

[7] S.M. Mahdavi, A. Irajizad, A. Azarian and R.M. Tilaki, Optical and Structural Properties of Copper Doped CdS Thin Films Prepared by Pulsed Laser Deposition. Scientia Iranica, Vol. 15, No. 3, (2008) pp.360-365.

[8] Karl W. Boer, Survey of semiconductor Physics, Van Nostrand Reinhold, New York, p.757 (1988).

[9] F. Iacomi, M. Purica, E. Budianu, P. Prepelita, D. Macovei, Structural studies on some doped CdS thin films deposited by thermal deposition, Thin solid films 515, (2007) pp.6080-6084.

DOI: 10.1016/j.tsf.2006.12.091

[10] Manickathai, K. and Kasi , S. Viswanathan and Alagar, M, Synthesis and characterization of CdO and CdS nanoparticles. Indian journal of pure and applied Physics, Vol. 46, (2008) pp.561-564.

[11] Dariush Souri and Kobra Shomalian, Band gap determination by absorption spectrum fitting method (ASF) and structural properties of different compositions of (60−x) V2O5–40TeO2–xSb2O3 glasses, Journal of Non-Crystalline Solids, Volume 355, Issues 31-33, (2009).

DOI: 10.1016/j.jnoncrysol.2009.06.003

[12] Shaji Varghese, Mercy Iype, E. J. Mathew and C. S. Menon, Determination of the energy band gap of thin films of cadmium sulphide, copper phthalocyanine and hybrid cadmium sulphide/copper phthalocyanine from its optical studies, Materials Letters Volume 56, Issue 6, (2002).

DOI: 10.1016/s0167-577x(02)00682-1

[13] Chandramohan, S.; Kanjilal, A.; Tripathi, J. K.; Sarangi, S. N.; Sathyamoorthy, R.; Som, T, Structural and optical properties of Mn-doped CdS thin films prepared by ion implantation, J. Appl. Phys. 105, issue 12, (2009) pp.123507-4.

DOI: 10.1063/1.3151712

[14] Abu-Safe, Husam H.; Hossain, Marouf; Naseem, Hameed; Brown, William; Al Dhafiri, Abdullah, Chlorine-doped CdS thin films from CdCl2- mixed CdS powder, Journal of electronic materials, vol, 33, No. 2, (2004) pp.128-134.

DOI: 10.1007/s11664-004-0282-8

[15] J.C. Orlianges, C. Champeaux, P. Dutheil, A. Catherinot, T. Merle Mejean, Structural, electrical and optical properties of carbon-doped thin films prepared by pulsed-laser deposition, thin solid films Volume 519, Issue 21, (2011).

DOI: 10.1016/j.tsf.2010.12.139

[16] S.M. Mahdavi, A. Irajizad, A. Azarian and R.M. Tilaki, Optical and Structural Properties of Copper Doped CdS Thin Films Prepared by Pulsed Laser Deposition. Scientia Iranica, Vol. 15, No. 3, (2008) pp.360-365.