Photoabsorption Spectra of Nano-Crystalline Silicon Films
1993
The photoabsorption spectra of nano-crystalline silicon (nc-Si:H) films were measured by means of constant photoconductivity method. We investigated the changes of absorption spectra with the increasing of crystallinity as the deposited films are amorphous, microcrystalline and nano-crystalline. We found that in nc-Si:H the transition processes in the interfacial region between the grains predominate the whole range of the absorption spectra. We related the phenomenon to the structural changes in the material.
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