EM Study on Polycrystalline CdTe Electrodeposited Thin-Film

Abstract

Abstract: Astudy of micro-structural marphologies of CdTe thin-film from different technological processes is carried out with SEMand TEM. The change of crystal during the deposing processes was observed, and a comment for mechanism of crystal growth is given. The preliminary results are; (1) Both anode, change of electrolyte composition and rectification of electrodeposited current can possibly decrease the cathodic polarization of CdTe electrodeposited processes. So the surface of 3^#CdTe film has a closer texture than that of 1^#and 2^#; (2) The crystallite size of 3^#deposited from electrolyte Bafter annealing in argon and heating in air can be increased to 0. 4-0. 5μm; (3) It is found that CdTe twin crystal exists in the CdTe polycrystallites from the cathodic deposition after annealing in argon and heating in air. The close texture, big crystal and twins-are very advantageous for the improvement of solar-cell.

Key words: Electrodeposition, Cathodic polarization, Crystal, Twin

TrendMD:

Guo Qing-song, Zhang Li. EM Study on Polycrystalline CdTe Electrodeposited Thin-Film[J]. Chem. J. Chinese Universities, 1991, 12(3): 406.

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EM Study on Polycrystalline CdTe Electrodeposited Thin-Film

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