A study of the optical bandgap energy and Urbach tail of spray-deposited CdS:In thin films

By S. Ikhmayies, R. Ahmad-bitar. 2013

256 citations recorded by the source corpus.

Cadmium sulfide (CdS) is an interesting material for applications in optoelectronic and pho- tovoltaic devices. In particular, thin films of n-type CdS are widely used as a window layer in heterojunction solar cells. The optical bandgap energy is the most interesting parameter for these applications. For spray-deposited indium-doped cadmium sulfide (CdS:In) thin films prepared on glass substrates the transmittance measurements were used to estimate the optical bandgap energy. Tailing in the bandgap was observed and found to obey Urbach rule. The effects of film thickness and the substrate temperature on the bandgap energy and the width of the tail were investigated. A linear relation between bandgap energy and width of the tail was found.

Subfields: Electrical and Electronic Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/f9cb16d9f6c6aa6c54414352dbd1c45749d569f0

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In Electrical and Electronic Engineering

1. M. A. Morsi
2. S. I. Badr
3. E. M. Abdelrazek
4. A. Abdelghany

In Materials Chemistry

1. M. A. Morsi
2. S. I. Badr
3. E. M. Abdelrazek
4. A. Abdelghany

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