The Role of Quantized Effective Mass and Relaxation Time on Optical Absorption of Semiconductors

Elshiekh, Mohamed Eltoum Fadel

dc.contributor.author	Elshiekh, Mohamed Eltoum Fadel
dc.date.accessioned	2014-01-21T11:29:40Z
dc.date.available	2014-01-21T11:29:40Z
dc.date.issued	2007-07-01
dc.identifier.citation	Elshiekh,Mohamed Eltoum Fadel .The Role of Quantized Effective Mass and Relaxation Time on Optical Absorption of Semiconductors/ Mohamed Eltoum Fadel Elshiekh;Mubarak Dirar Abd-Alla.-Khartoum:Sudan University of Science and Technology,College of Science,2007.-147p. : ill. ; 28cm.-PhD	en_US
dc.identifier.uri	http://hdl.handle.net/123456789/3201
dc.description	Thesis	en_US
dc.description.abstract	In this research a quantum expressions for absorption coefficient, effective mass and relaxation time are obtained by modifying Schrödinger equation solutions, with the aid of Maxwell's and Boltzmann statistical distribution. These expressions are verified by performing experiments from which empirical relations between the absorption coefficient and concentration of P and Fe beside the magnetic field are obtained. These expressions are in conformity with the theoretical ones. The values of the relaxation time, effective mass, energy gap and mobility are also obtained from experiments. These values are comparable with the standard values ( τ~ 10 − 14 sec, μ 1500cm ~ 2 30 / V .s, E g ~ 1.12eV , m * ~ 10 − Kg )	en_US
dc.description.sponsorship	Sudan University of Science and Technology	en_US
dc.language.iso	en	en_US
dc.publisher	Sudan University of Science and Technology	en_US
dc.subject	Physics	en_US
dc.subject	Modifying Schrödinger	en_US
dc.title	The Role of Quantized Effective Mass and Relaxation Time on Optical Absorption of Semiconductors	en_US
dc.type	Thesis	en_US