The optical absorption edge in some amorphous semiconductors

E. E. Khawaja; C. A. Hogarth

doi:10.1088/0022-3719/21/3/015

The optical absorption edge in some amorphous semiconductors

E. E. Khawaja
, C. A. Hogarth

King Fahd University of Petroleum & Minerals

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

The optical absorption coefficient (α) has been measured as a function of photon energy (ħω) in binary vanadate glasses containing 50 mol.% of vanadium in different glass formers (P₂O₅, TeO₂ and GeO₂). Data on absorption in these glasses and in some other semiconductors have been analysed in the light of the theory developed by Davis and Mott (αħω varies as (ħω-E₀)ⁿ). E₀ is the optical energy gap and n=2 or 3. It is found that a cubic relation gives the best fit to the data.

Original language	English
Pages (from-to)	607-613
Number of pages	7
Journal	Journal of Physics C: Solid State Physics
Volume	21
Issue number	3
DOIs	https://doi.org/10.1088/0022-3719/21/3/015
State	Published - 30 Jan 1988

ASJC Scopus subject areas

Condensed Matter Physics
General Engineering
General Physics and Astronomy

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abstract = "The optical absorption coefficient (α) has been measured as a function of photon energy (ħω) in binary vanadate glasses containing 50 mol.\% of vanadium in different glass formers (P2O5, TeO2 and GeO2). Data on absorption in these glasses and in some other semiconductors have been analysed in the light of the theory developed by Davis and Mott (αħω varies as (ħω-E0)n). E0 is the optical energy gap and n=2 or 3. It is found that a cubic relation gives the best fit to the data.",

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AB - The optical absorption coefficient (α) has been measured as a function of photon energy (ħω) in binary vanadate glasses containing 50 mol.% of vanadium in different glass formers (P2O5, TeO2 and GeO2). Data on absorption in these glasses and in some other semiconductors have been analysed in the light of the theory developed by Davis and Mott (αħω varies as (ħω-E0)n). E0 is the optical energy gap and n=2 or 3. It is found that a cubic relation gives the best fit to the data.

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U2 - 10.1088/0022-3719/21/3/015

DO - 10.1088/0022-3719/21/3/015

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ER -

The optical absorption edge in some amorphous semiconductors

Abstract

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