Structural and Optical Characterization of Chemically Deposited Cuprous Oxide (Cu₂O) Thin Film

Abstract:

Thin films of cuprous oxide are grown on microscope glass slides by chemical bath deposition technique. Molar solutions of copper nitrate, hydrazine and TEA constituted the chemical bath. The depositions are made by optimizing the concentration of precursor solution. X-ray diffraction measurements revealed the phase formation in the oxide films. The optical characteristics of Cu2O films are analyzed by means of UV-Vis-NIR spectrophotometer. The effect of annealing on the structural and optical properties of the film is investigated. The calculated direct optical band gap of the films is in the range of 2.4-1.8 eV.

• Periodical: Advanced Materials Research (Volume 678)
• Pages: 118-122
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.678.118
• Online since: March 2013
• Authors: P. Usha Rajalakshmi, Rachel Oommen Rachel Oommen
• Keywords: Annealing, Bandgap, Chemical Bath Deposition (CBD), Cu₂O, Cuprous Oxide, Thin Film

References

[1] T.Mahalingam J.S.P. Chitra J.P. Chu, Honsu Moon, Han Joon Kwon, Yong Deak Kim, Photoelectrochemical solar cell studies on electroplated cuprous oxide thin films, J Mater Sci: Mater Electron 17 (2006) 519-523.

DOI: 10.1007/s10854-006-8231-3

[2] Fang Sun, Yupeng Guo, Yumei Tian, Jidong Zhang, Xiaotang Lv, Minggang Li, Yunhui Zheng, Zichen Wang, The effect of additives on the Cu2O crystal morphology in acetate bath by electrodeposition, J. Cryst. Growth, 310(2008)318-323.

DOI: 10.1016/j.jcrysgro.2007.11.010

[3] C. A. N Fernando, P. H. C. de Silva, S. K. Wethasinha, I. M. Dharmadasa, T. Delsol, M. C. Simmonds, Investigation of n-type Cu2O layers prepared by a low cost chemical method for use in photo-voltaic thin film solar cells,Renewable Energy 26 (2002)521-529.

DOI: 10.1016/s0960-1481(01)00157-4

[4] Tsuyoshi Kosugi and Shoji Kaneko, Novel Spray pyrolysis Deposition of Cuprous oxide thin films, Journal of the American Ceramic Society, 81(1998) 3117-3124.

DOI: 10.1111/j.1151-2916.1998.tb02746.x

[5] A.A. Ogwu, T.H. Dharma., E.Bouquerel, Electrical resistivity of copper oxide thin films prepared by reactive magnetron sputtering, J. of Achievements in Materials and Manufacturing Engineering, 24(2007) 172-177.

[6] G. Papadimitropoulos, N.Vourdas, V.Vamvakas D. Davazoglou, Optical and structural properties of copper oxide thin films grown by oxidation of metal layers  Thin Solid Films 515 (2006) 2428-2432.

DOI: 10.1016/j.tsf.2006.06.002

[7] Mahalingam. T. J, S. P. Chitra, G. Ravi, J. P. Chu, P. J. Sebastian, Characterization of pulse plated Cu2O thin films   Surface and Coatings Technology, 168(2003) 111-114.

DOI: 10.1016/s0257-8972(03)00211-1

[8] Aiping Chen, Hua Long, Xiangcheng Li, Yuhua Li, Guang Yang, Peixiang Lu, Controlled growth and characteristics of single-phase Cu2O and CuO films by pulsed laser deposition ,Vacuum, 83 (2008) 927-930.

DOI: 10.1016/j.vacuum.2008.10.003

[9] D.D.O. Eya, A.J. Ekupunobi, Okeke, Optical Properties of Cuprous oxide thin film prepared by Chemical bath deposition technique, The Pacific Journal of Science and Technology, 6 (2005) 98-104.

[10] M.R. Johan, Mohd Shahadan Mohd Suan, Nor Liza Hawari, Hee Ay Ching, Annealing Effects on the Properties of Copper Oxide Thin Films Prepared by Chemical Deposition, 6 (2011) 6094 - 6104

DOI: 10.1016/s1452-3981(23)19665-9

[11] S.Subramanian, P.Chitra lekha, D.Pathinettam Padiyam, Inclusion of polyaniline in electrodeposited bismuth sulphide thin films: Synthesis and characterization Current Applied Physics, 9 (2009)1140 -1145.

DOI: 10.1016/j.cap.2009.01.003

[12] J.Tauc, R.Grigorovici, A.Vancu, Optical properties and Electronic structure of Germanium, Phys. Status Solidi, 15 (1966)627-637.

DOI: 10.1002/pssb.19660150224