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Title: Optical absorption and transmission in CuxZn1-xSe pseudo-binary alloy
Authors: Mukolu, A I
Keywords: Optical absorption
Optical transmission
Pseudo-binary alloy
Optical band gap
Absorption coefficient
Issue Date: May-2005
Publisher: CSIR
Series/Report no.: C09K11/00; H01L21/00
Abstract: The optical absorption and transmission in the pseudo-binary alloy of copper, zinc and selenium (CuxZn1-x Se) have been investigated. The transmission is high over most of the visible region but the absorption edge moves into the visible spectrum as the concentration of copper in the alloy increases. The energy gaps of the samples were found to be 1.58, 1.60 and 1.64 eV, respectively. These values fall within the requirement for visible transmission indicating that the films from such alloys can be used as visibly transmitting materials for use as warm climate windows to transmit visible radiation into buildings which have their windows coated with such films. Also, the decrease in energy gaps of the samples with a corresponding shift in the absorption edge towards the visible spectrum as the concentration of the copper impurity increases, leads to an improvement in the conductivity of the alloys examined.
Description: 359-362
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.43(05) [May 2005]

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