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Master's Dissertation
DOI
10.11606/D.43.2017.tde-15032017-135018
Document
Author
Full name
Walter Manuel Orellana Muñoz
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 1992
Supervisor
Title in Portuguese
ESTRUTURA ELETRONICA DE IMPUREZAS RELACIONADAS COM COBRE EM GERMANIO
Keywords in Portuguese
Física Da Matéria condensada
Semicondutores
Abstract in Portuguese
Neste trabalho apresentamos estudos sobre a estrutura eletronica de impurezas isoladas e complexas em germanio as quais sao responsaveis pela introducao de niveis de energia profundos na banda proibida do semicondutor. O modelo utilizado e o do aglomerado molecular, dentro do formalismo autoconsistente do metodo do espalhamento multiplo-'X IND.ALFA' com o tratamento dos orbitais de superficie atraves da esfera de watson. Efeitos de polarizacao de spin e de relaxacao eletronica sao incluidos. Aplicamos o metodo para analisar impurezas isoladas de cobre substitucional ('GE:'cu ind.S'); COBRE INTERSTICIAL ('ge':'cu ind.I') E DE LITIO INTERSTICIAL ('ge':'li ind.I') E AS IMPUREZAS COMPLEXAS DE COBRE SUBSTITUCIONAL - COBRE INTERSTICIAL ('ge':'cu ind.I''cu ind.S') E COBRE SUBSTITUCIONAL - LITIO ('ge':'li ind.I''cu ind.S'). Nossos resultados sao comparados com dados experimentais existentes na literatura
Title in English
Electron structure of copper-related impurities in germanium
Keywords in English
condensed matter physics
Semiconductors
Abstract in English
In this work we report results for the electronic structure of Isolated and complex impurities in Germanium which introduces deep leveis In the crystal band gap. The calculations are carried out by using the The theory-Scattering-X theory within the Watson-sphere-terminated molecular-cluster method. The self-constructive calculations are carried out by taking into account the spin-polarization and electronic relaxation effects. The following isolated and complex impurities are studied: substitutional Copper Interstitial Lithium Copper (Ge: Cu Cu); 1 s (Ge: Cu); S Interstitial Copper (Ge: Li); L Substitutional Copper Substitutional Copper Interstitial (Ge: Cu); 1 Interstitial Lithium (Ge: Li Cu). 1 s Our results are compared with experimental data in the literature.
 
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1992_OrellanaMunoz.pdf (21.10 Mbytes)
Publishing Date
2017-03-16
 
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