Title :
Structure and morphology of evaporated bilayer and selenized CuInSe2 films
Author :
Dimmler, B. ; Dittrich, H. ; Schock, H.W.
Author_Institution :
Inst. of Phys. Electron., Stuttgart Univ., West Germany
Abstract :
Polycrystalline CuInSe2 films for solar cells were prepared by thermal evaporation of the single elements and by selenization of the metal films. The morphology and structure of the films were studied in detail by scanning electron microscopy and X-ray diffraction. It was found that the formation of the films is governed by interdiffusion of Cu-rich and In-rich phases. This was confirmed by conductivity and optical measurements. The formation of bilayer films and the selenization process exhibit similarities. Heterojunctions with evaporated and selenized absorbers and (Zn,Cd)S windows show active area efficiencies of 10.1% and 4.1%, respectively.
Keywords :
X-ray diffraction examination of materials; copper compounds; crystal atomic structure of inorganic compounds; electrical conductivity of crystalline semiconductors and insulators; indium compounds; scanning electron microscope examination of materials; semiconductor thin films; solar cells; ternary semiconductors; CuInSe2 films; X-ray diffraction; active area efficiencies; evaporated bilayer films; heterojunctions; morphology; optical measurements; polycrystalline films; scanning electron microscopy; semiconductor; solar cells; Conductivity measurement; Electron optics; Heterojunctions; Morphology; Optical diffraction; Optical films; Optical sensors; Photovoltaic cells; Scanning electron microscopy; Surface morphology; Temperature; X-ray diffraction;
Conference_Titel :
Photovoltaic Specialists Conference, 1988., Conference Record of the Twentieth IEEE
Conference_Location :
Las Vegas, NV, USA
DOI :
10.1109/PVSC.1988.105945
