IUVSTA 15th International Vacuum Congress (IVC-15), AVS 48th International Symposium (AVS-48), 11th International Conference on Solid Surfaces (ICSS-11)
    Surface Science Thursday Sessions
       Session SS4-ThP

Paper SS4-ThP9
Surface Morphology of CuInS@sub 2@ Thin Films

Thursday, November 1, 2001, 5:30 pm, Room 134/135

Session: Semiconductor Morphology Poster Session
Presenter: A. Azuma, Miyazaki University, Japan
Authors: K. Yoshino, Miyazaki University, Japan
A. Azuma, Miyazaki University, Japan
Y. Akaki, Miyazaki University, Japan
H. Komaki, Miyazaki University, Japan
T. Ikari, Miyazaki University, Japan
Correspondent: Click to Email
Solar cell techniques using I-III-VI@sub 2@ chalcopyrite semiconductors have made rapid progress for the solution of environmental and resources problems. Among chalcopyrite semiconductors, CuInS@sub 2@ may be the most promising material for photovoltaic applications due to the bandgap energy of 1.5 eV which perfectly matches the solar spectrum for energy conversion. However, the physical properties of CuInS@sub 2@ are almost unknown.In this work, the CuInS@sub 2@ thin films were grown by vacuum evaporation method. The source material was CuInS@sub 2@ compound material grown by Hot-Press method. Using substrate was glass and growth temperature is room temperature. After the vacuum evaporation, the sample was annealing under Ar or air atmospheres from 200 to 500 °C. The samples were examined by X-ray diffraction (XRD), electron probe microanalysis (EPMA), scanning electron microscopy (SEM) and optical absorption measurements.The XRD spectra indicate that poly CuInS@sub 2@ films are successful grown on glass substrate until 300 °C. CuIn@sub 5@S@sub 8@ and Cu@sub 2@S are grown with increasing the annealing temperatures. The EPMA results are in good agreement with the stoichiometry compositions of the CuInS@sub 2@, CuIn@sub 5@S@sub 8@ and Cu@sub 2@S films. Surface Morphology of the samples is drastically changed. A number of the spots increase with increasing the annealing temperatures. Furthermore, absorption coefficients decrease with increasing the temperatures.