Optical absorption studies on (V2O5)1-x-(MoO3)x thin films

被引：28

作者：

Madhuri, KV ^{[1
]}

Naidu, BS ^{[1
]}

Hussain, OM ^{[1
]}

机构：

[1] Sri Venkateswara Univ, Dept Phys, Thin Film Lab, Tirupati 517502, Andhra Pradesh, India

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2003年 / 77卷 / 01期

关键词：

(V2O5)(1-x)-(MoO3)(x) thin films; electron beam evaporation; optical properties; electrical conductivity;

D O I：

10.1016/S0254-0584(01)00568-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Thin films of (V2O5)(1-x)-(MoO3)(x) (0 less than or equal to x less than or equal to 1)were prepared by the electron beam evaporation technique in an oxygen partial pressure of 2 x 10(-4) mbar and at a substrate temperature of 423 K. The optical absorption studies in the wavelength range 300-1500 nm suggested the increase of the optical bandgap with increasing x and showed a curvilinear behaviour. The width of the localized states E-e estimated from the slopes of ln alpha vs hnu plots of (V2O5)(1-x)-(MoO3)(x) films were in the range 0.42-0.35 eV The electrical conductivity decreased with the increase of composition x. (C) 2002 Published by Elsevier Science B.V.

引用

页码：22 / 26

页数：5

共 30 条

[21]

Ramana CV, 1997, ADV MATER OPT ELECTR, V7, P225, DOI 10.1002/(SICI)1099-0712(199709)7:5<225::AID-AMO309>3.0.CO

[22]

2-R

[23] OPTICAL-ABSORPTION STUDIES IN MOLYBDENUM TRIOXIDE THIN-FILMS [J].

SABHAPATHI, VK ;

HUSSAIN, OM ;

REDDY, PS ;

REDDY, KTR ;

UTHANNA, S ;

NAIDU, BS ;

REDDY, PJ .

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1995, 148 (01) :167-173

[24] INVESTIGATION ON THE TERNARY-SYSTEM V/MO/O [J].

SCHADOW, H ;

OPPERMANN, H ;

WEHNER, B .

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 1995, 621 (04) :624-629

[25]

SOTA Y, 1991, J ELECTROCHEM SOC, V138, pL37

[26] MAGNETIC-SUSCEPTIBILITY AND ELECTRON-SPIN RESONANCE OF SEMICONDUCTING MIXED-CRYSTAL V2MOO8(V2O5 SINGLE-BOND MOO3) [J].

SPERLICH, G ;

ZIMMERMANN, PH ;

KELLER, G .

ZEITSCHRIFT FUR PHYSIK, 1974, 270 (03) :267-275

[27]

Tauc J., 1972, OPTICAL PROPERTIES S, V27, P277

[28]

TELLEDO A, 1995, J APPL PHYS, V77, P4655

[29]

Urbach F, 1966, PHYS REV, V92, P627

[30] OPTICAL-ABSORPTION IN COEVAPORATED V2O5-TEO2 THIN-FILMS [J].

YAGOUBI, B ;

HOGARTH, CA .

JOURNAL OF MATERIALS SCIENCE, 1991, 26 (03) :579-582

← 1 2 3 →