Percolative growth of photodarkening in amorphous As2S3 films

被引：65

作者：

Ganjoo, A ^{[1
]}

Shimakawa, K

Kamiya, H

Davis, EA

Singh, J

机构：

[1] Gifu Univ, Dept Elect & Elect Engn, Gifu 5011193, Japan

[2] Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England

[3] No Terr Univ, SITE, Fac Sci Informat Technol & Educ, Darwin, NT 0909, Australia

来源：

PHYSICAL REVIEW B | 2000年 / 62卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.62.R14601

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The time evolution of changes in the optical absorption coefficient with illumination has been studied for a-As2S3 films at 50, 100, 200, and 300 K in order to characterize the dynamics of photodarkening. The magnitude of the changes is larger at the lower temperatures. A model of photon-assisted site switching is proposed for the Variation of photodarkening with time, in which the fractional growth in the concentration of photodarkened sites is expressed by a stretched exponential function.

引用

页码：14601 / 14604

页数：4

共 24 条

[1] EFFECTIVE MEDIUM THEORY FOR HALL-EFFECT IN DISORDERED MATERIALS [J].

COHEN, MH ;

JORTNER, J .

PHYSICAL REVIEW LETTERS, 1973, 30 (15) :696-698

[2] INHOMOGENEOUS TRANSPORT REGIME IN DISORDERED MATERIALS [J].

COHEN, MH ;

JORTNER, J .

PHYSICAL REVIEW LETTERS, 1973, 30 (15) :699-702

[3] PHOTODARKENING PROFILES AND KINETICS IN CHALCOGENIDE GLASSES [J].

DUCHARME, S ;

HAUTALA, J ;

TAYLOR, PC .

PHYSICAL REVIEW B, 1990, 41 (17) :12250-12259

[4] In situ photoexpansion measurements of amorphous As2S3 films:: Role of photocarriers [J].

Ganjoo, A ;

Ikeda, Y ;

Shimakawa, K .

APPLIED PHYSICS LETTERS, 1999, 74 (15) :2119-2121

[5]

GANJOO A, 1998, RECENT RES DEV APPL

[6] LONG-TRANSIENT EFFECTS IN LASERS WITH INSERTED LIQUID SAMPLES [J].

GORDON, JP ;

LEITE, RCC ;

MOORE, RS ;

PORTO, SPS ;

WHINNERY, JR .

JOURNAL OF APPLIED PHYSICS, 1965, 36 (01) :3-&

[7] AMORPHOUS ARSENIC [J].

GREAVES, GN ;

ELLIOTT, SR ;

DAVIS, EA .

ADVANCES IN PHYSICS, 1979, 28 (01) :49-141

[8]

Iovu M, 2000, J OPTOELECTRON ADV M, V2, P53

[9] PERCOLATION AND CONDUCTION [J].

KIRKPATRICK, S .

REVIEWS OF MODERN PHYSICS, 1973, 45 (04) :574-588

[10] Photo-induced structural changes in obliquely deposited arsenic-based amorphous chalcogenides: a model for photostructural changes [J].

Kuzukawa, Y ;

Ganjoo, A ;

Shimakawa, K ;

Ikeda, Y .

PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, 1999, 79 (02) :249-256

← 1 2 3 →