Modification of selenium-tellurium amorphous composition with iron using the mechanical alloying method

被引：4

作者：

Amin, G. A. M. ^{[1
]}

机构：

[1] Natl Ctr Radiat Res & Technol, Dept Solid State Phys, Cairo, Egypt

来源：

OPTICAL MATERIALS | 2007年 / 29卷 / 05期

关键词：

amorphous; semiconductors; optical; mechanical alloying; synthesis;

D O I：

10.1016/j.optmat.2005.09.080

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The mechanical alloying method was used to add Fe to the amorphous Se8Te2 alloy. The effect of mechanically alloying Fe with Se8Te2 on the optical properties of thin films of the resulting alloys was studied in the UV-VIS spectral region. Different models for the determination of the optical energy gap were reviewed and used to analyze the obtained data. The optical energy gap was found to increase with the Fe content. Values of the optical energy gap of the alloys under investigation were determined using three different methods and the relation between different measures of the optical gap is explored. The effect of annealing at temperatures below the glass transition temperatures was also investigated. The optical energy gap found to decreases with the annealing time revealing the increase of randomness as a result of thermal annealing. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：562 / 565

页数：4

共 18 条

[1] Structural studies of cobalt selenides prepared by mechanical alloying [J].

Campos, CEM ;

de Lima, JC ;

Grandi, TA ;

Machado, KD ;

Pizani, PS .

PHYSICA B-CONDENSED MATTER, 2002, 324 (1-4) :409-418

[2] Structural studies of iron selenides prepared by mechanical alloying [J].

Campos, CEM ;

de Lima, JC ;

Grandi, TA ;

Machado, KD ;

Pizani, PS .

SOLID STATE COMMUNICATIONS, 2002, 123 (3-4) :179-184

[3] DISORDER AND THE OPTICAL-ABSORPTION EDGE OF HYDROGENATED AMORPHOUS-SILICON [J].

CODY, GD ;

TIEDJE, T ;

ABELES, B ;

BROOKS, B ;

GOLDSTEIN, Y .

PHYSICAL REVIEW LETTERS, 1981, 47 (20) :1480-1483

[4] OPTICAL-ABSORPTION ABOVE THE OPTICAL GAP OF AMORPHOUS-SILICON HYDRIDE [J].

CODY, GD ;

BROOKS, BG ;

ABELES, B .

SOLAR ENERGY MATERIALS, 1982, 8 (1-3) :231-240

[5] CONDUCTION IN NON-CRYSTALLINE SYSTEMS .5. CONDUCTIVITY, OPTICAL ABSORPTION AND PHOTOCONDUCTIVITY IN AMORPHOUS SEMICONDUCTORS [J].

DAVIS, EA ;

MOTT, NF .

PHILOSOPHICAL MAGAZINE, 1970, 22 (179) :903-&

[6] Mechanical alloying of Fe and Zn: Phase analysis and Mossbauer studies [J].

deLima, JC ;

Borba, EC ;

Paduani, C ;

dosSantos, VHF ;

Grandi, TA ;

Rechenberg, HR ;

Denicolo, I ;

Elmassalami, M ;

Barbosa, AF .

JOURNAL OF ALLOYS AND COMPOUNDS, 1996, 234 (01) :43-47

[7]

John S., 1990, Reviews of Solid State Science, V4, P1

[8]

Mott N F., 1979, Electronic Processes in Non-Crystalline Materials, P428

[9] EXTENDED SOLID-SOLUTIONS IN CD-ZN POWDERS BY MECHANICAL ALLOYING [J].

MUKHOPADHYAY, DK ;

SURYANARAYANA, C ;

FROES, FH .

SCRIPTA METALLURGICA ET MATERIALIA, 1994, 30 (01) :133-137

[10]

NANG TT, 1976, JPN J APPL PHYS, V14, P849, DOI DOI 10.1143/JJAP.15.849

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