Bulg. J. Phys. vol.17 no.3 (1990), pp. 199-208


Photovoltaic Properties and Structure of Multilayer Heterojunction Systems Based on Cadmium Telluride

B.T. Boiko, G.I. Kopach, V.R. Kopach, O.S. Khripunov
Lenin Polytechnic Institute, Kharkov, USSR
Abstract. In (Cr)-pCdTe-ITO photovoltaic cells based on undoped CdTe layers grown by the hot wall vacuum evaporation method have been prepared. By decreasing the degree of extension of CdTe grain-boundary surface, removing the separating barrier in the base layer from the fine-crystalline defect region at CdTe/ITO interface and subtituting Cr/CdTe contact for In/CdTe, the efficiency of such solar cells can be increased up to 6%. The causes of the phenomena observed and the possibilities of further perfection of the solar cells are discussed.

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