ELECTRONIC-STRUCTURE AND OPTICAL-PROPERTIES OF OXIDE GLASSES .1. SIO2, NA2O - SIO2 AND NA2O - CAO - SIO2

被引：21

作者：

ELLIS, E ^{[1
]}

JOHNSON, DW ^{[1
]}

BREEZE, A ^{[1
]}

MAGEE, PM ^{[1
]}

PERKINS, PG ^{[1
]}

机构：

[1] UNIV STRATHCLYDE,DEPT PURE & APPL CHEM,GLASGOW G1 1XL,SCOTLAND

来源：

PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES | 1979年 / 40卷 / 02期

关键词：

D O I：

10.1080/13642817908246363

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A combined spectroscopic and theoretical study of the glasses SiO2, Na2O: SiO2 and Na2O: CaO: SiO2 has been carried out. For SiO, evidence is presented for the assignment of the sharp 10·2 eV peak as being due to a Wannier exciton, whilst peaks at higher energy stem from O 2p→Si 3d interband transitions. It is found that systematic changes in e2 and m occur as modifier cations are incorporated in SiO2. The first (exciton) peak is broadened by the modifiers and new absorption is found below 10 eV. Overall, the calculated joint density-of-states curves are in good agreement with the experimental curves of ε2E against E, where E is the photon energy. © 1979 Taylor & Francis Ltd.

引用

页码：105 / 124

页数：20

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