Main Article Content
ZnTe bilayer thin films were deposited onto soda-lime glass by a thermal vacuum evaporation technique using the NANO 36 thermal evaporator under a vacuum pressure of 2.9 x 10-5 torr. The optical characteristics of the film were measured using an AVANTEX UV spectrophotometer in the wavelength range from 239.534 nm to 999.495 nm. Also, the electrical characteristics of the thin films were investigated using KEITHLEY four-point probe techniques. The investigation of the optical properties of the thin films as-deposited and annealed at different temperatures showed high transmission in the NIR region with good absorption in the visible and UV regions. The extrapolated band gap energies were 2.60 eV and 3.20 eV for annealed and as-deposited samples, respectively. electrical resistivity decreased as the annealing temperature increases. The images of the film as-deposited and on annealing have a uniform distribution on the glass slides.
R. J. Mustafa, M. R. Gomaa, M. Al-Dhaifallah and H. Rezk, “Environmental Impacts on the Performance of Solar Photovoltaic Systems,” Sustainability, vol. 12, no. 2, pp. 1–17, 2020.
S. Sharma, K. K. Jain and A. Sharma, “Solar Cells: In Research and Applications—A Review,” Mater. Sci. Appl., vol. 6, no. 12, pp. 1145–1155, 2015.
A. M. Bagher, “Types of Solar Cells and Application,” Am. J. Opt. Photonics, vol. 3, no. 5, pp. 94-113, 2015.
M. Imamzai, M. Aghaei and Y. H. Thayoob, “A Review on Comparison between Traditional Silicon Solar Cells and Thin- Film CdTe Solar Cells,” in Proc.s Nation. Graduate Conf., pp. 8–10, 2012.
S. Siebentritt, “Chalcopyrite Compound Semiconductors for Thin Film Solar Cells,” Curr. Opin. Green Sustain. Chem., vol. 4, pp. 1–7, 2017.
A. Acevedo-Luna, R. Bernal-Correa, J. Montes-Monsalve and A. Morales-Acevedo, “Design of Thin Film Solar Cells based on A Unified Simple Analytical Model,” J. Appl. Res. Technol., vol. 15, no. 6, pp. 599–608, 2017.
K. L. Chopra, P. D. Paulson and V. Dutta, “Thin-film Solar Cells: An Overview,” Prog. Photovoltaics Res. Appl., vol. 12, no. 23, pp. 69–92, 2004.
J. Y. Muhammad, A. B. Waziri, A. M. Shitu, U. M. Ahmad, M. H. Muhammad, Y. Alhaji, A. T. Olaniyi and A.l A. Bala, “Recent Progressive Status of Materials for Solar Photovoltaic Cell: A Comprehensive Review,” Sci. J. Energy Eng., vol. 7, no. 4, pp. 77–89, 2019.
M. Abbas, N. A. Shah, K. Jehangir, M. Fareed and A. Zaidi, “Physical Properties of ZnTe Semiconductor Thin Films Prepared by High Vacuum Resistive System,” Mater. Sci. Pol., vol. 36, no. 3, pp. 364–369, 2018.
C. H. Hsu, C. Tseng, Y. Yu, P. C. Yang, C. Lai, J. S. Lin and H. Yang, “Effect of Annealing Temperature on Electrical Properties of ZnTe Layers Grown by Thermal Evaporation,” Adv. Mater. Res., vol. 608–609, pp. 1314–1317, 2013.
T. Potlog, N. Maticiuc, A. Mirzac, P. Dumitriu and D. Scortescu, “Structural and Optical Properties of ZnTe Thin Films,” Proc. Int. Semicond. Conf. CAS, vol. 2, pp. 321–324, 2012.
R. Zarei, M. H. Ehsani and H. R. Dizaji, “An Investigation on Structural and Optical Properties of Nanocolumnar ZnTe Thin Films Grown by Glancing Angle Technique,” Mater. Res. Express, vol. 7, no. 2, pp. 1–10, 2020.
D. G. Diso, F. Fauzi, O. K. Echendu, A. R. Weerasinghe and I. M. Dharmadasa, “Electrodeposition and Characterisation of ZnTe Layers for Application in CdTe based Multi-layer Graded Bandgap Solar Cells,” J. Phys. Conf. Ser., vol. 286, no. 1, 2011.
O. Oklobia, G. Kartopu and S. J. C. Irvine, “Properties of Arsenic-Doped ZnTe Thin Films as A Back Contact for CdTe Solar Cells,” Materials, vol. 12, no. 3706, pp. 1–16, 2019.
Y. D. Tembhurkar, “Study of Optical Band Gap Energy of II-VI Solid Solution Thin Films of CdZnS2 Prepared by Spray Pyrolysis,” Int. J. Sci. Res., vol. 5, no. 12, pp. 1939–1941, 2016.
I. L. Ikhioya, “Optical and Electrical Properties of ZnTe Thin Films Using Electrodeposition Technique,” Int. J. Innov. Appl. Stud., vol. 12, no. 2, pp. 369–373, 2015.
H. Tamura, “Effect of Substrate Temperature on Structural and Morphological Parameters of ZnTe Thin Films,” J. Chem. Inf. Model., vol. 53, no. 9, p. 287, 2008.
S. M. Ali, A. A. A. Shehab and S. A. Maki, “Study of the Influence of Annealing Temperature on the Structural and Optical Properties of ZnTe Prepared by Vacuum Thermal Evaporation Technique,” Ibn AL- Haitham J. Pure Appl. Sci., vol. 31, no. 1, pp. 50–57, 2018.
C. S. A. Raj, F. P. Xavier, A. Appl and S. Res, “Effect of Post Deposition Annealing on the Optical Absorption and Photoconductivity Studies of Pure ZnTe and Pure MgPc Thin Films Formed by Vacuum Deposition,” Sch. Res. Libr., vol. 5, no. 2, pp. 167–171, 2013.
A. Islam, S. Choudhury, and T. Begum, “Structural and Optical Characterization of Vacuum Evaporated Zinc Selenide Thin Films,” Eur. Sci. J., vol. 10, no. 15, pp. 241–253, 2014.
S. Shanmugan and D. Mutharasu, “Optical Properties and Surface Morphology of Zinc Telluride Thin Films Prepared by Stacked Elemental Layer Method,” Medziagotyra, vol. 18, no. 2, pp. 107–111, 2012.
S. Arora, “Structural and Optical Properties of Znx/Te1-x Layered Thin Film on Glass Substrate,” Int. Robot. Autom. J., vol. 3, no. 4, pp. 324–326, 2017.
S. S. Kale, R. S. Mane, H. M. Pathan, A. V Shaikh, O. Joo and S. Han, “Preparation and Characterization of ZnTe Thin Films by SILAR Method,” Appl. Surf. Sci., vol. 253, pp. 4335–4337, 2007.
Y. Sugawa, J. Ohta and T. Ohgai, “Semiconductor Properties of ZnTe Thin Films Electrodeposited from Aqueous Solutions,” TMS 2015 144th Annu. Meet. Exhib., pp. 359–364, 2015.