NbO2F:: An oxyfluoride phase with wide band gap and electrochromic properties

被引：24

作者：

Mizoguchi, H

Orita, M

Hirano, M

Fujitsu, S

Takeuchi, T

Hosono, H

机构：

[1] Japan Sci & Technol Corp KSP, ERATO, Hosono Transparent Electroact Mat, Takatsu Ku, Kawasaki, Kanagawa 2130012, Japan

[2] Shonan Inst Technol, Fujisawa, Kanagawa 2518511, Japan

[3] Natl Inst Adv Ind Sci & Technol, Ikeda 5638577, Japan

[4] Tokyo Inst Technol, Mat & Struct Lab, Yokohama, Kanagawa 2268503, Japan

来源：

APPLIED PHYSICS LETTERS | 2002年 / 80卷 / 25期

关键词：

D O I：

10.1063/1.1489703

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

It was demonstrated that the oxyfluoride NbO2F with an ReO3-type structure is a promising electrochromic material with wide band gap. Measurement of diffuse reflectance spectra revealed the optical band gap of NbO2F (similar to3.1 eV) to be wider than that of WO3 (similar to2.6 eV). It was rendered electron conductive by heating at 770 K in the presence of Pt powder in H-2. Electrical conductivity for the blue-colored sintered sample of NbO2F obtained was 6x10(-3) S cm(-1) at 300 K, and a temperature dependence showed the semiconductive behaviors. A reversible electrochromism between pale-blue and deep-blue-color was found in H2SO4 and Na2SO4 aqueous solution. (C) 2002 American Institute of Physics.

引用

页码：4732 / 4734

页数：3

共 9 条

[1] CRYSTAL STRUCTURE OF NB3O7F
ANDERSSON, S
[J]. ACTA CHEMICA SCANDINAVICA, 1964, 18 (10): : 2339 - +
[2] Electrochemical intercalation of lithium into the perovskite-type NbO2F:: influence of the NbO2F particle size
Bohnke, C
Fourquet, JL
Randrianantoandro, N
Brousse, T
Crosnier, O
[J]. JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 2001, 5 (01) : 1 - 7
[3] THE STRUCTURES OF LITHIUM-INSERTED METAL-OXIDES - LIREO3 AND LI2REO3
CAVA, RJ
SANTORO, A
MURPHY, DW
ZAHURAK, S
ROTH, RS
[J]. JOURNAL OF SOLID STATE CHEMISTRY, 1982, 42 (03) : 251 - 262
[4] Cox P. A., 1992, TRANSITION METAL OXI
[5] OPTICAL AND PHOTOELECTRIC PROPERTIES AND COLOR CENTERS IN THIN-FILMS OF TUNGSTEN OXIDE
DEB, SK
[J]. PHILOSOPHICAL MAGAZINE, 1973, 27 (04): : 801 - 822
[6] NEW OXYFLUORIDES CONTAINING INDIUM WITH POTENTIAL FERROELASTIC PROPERTIES
GRANNEC, J
YACOUBI, A
RAVEZ, J
HAGENMULLER, P
[J]. JOURNAL OF SOLID STATE CHEMISTRY, 1988, 75 (02) : 263 - 269
[7] GENERATION OF ELECTRON CARRIERS IN INSULATING THIN-FILM OF MGIN2O4 SPINEL BY LI+ IMPLANTATION
KAWAZOE, H
UEDA, N
UNNO, H
OMATA, T
HOSONO, H
TANOUE, H
[J]. JOURNAL OF APPLIED PHYSICS, 1994, 76 (12) : 7935 - 7941
[8] TOPOTACTIC LITHIUM REACTIONS WITH REO3 RELATED SHEAR STRUCTURES
MURPHY, DW
GREENBLATT, M
CAVA, RJ
ZAHURAK, SM
[J]. SOLID STATE IONICS, 1981, 5 (OCT) : 327 - 330
[9] Transparent p-type semiconductor: LaCuOS layered oxysulfide
Ueda, K
Inoue, S
Hirose, S
Kawazoe, H
Hosono, H
[J]. APPLIED PHYSICS LETTERS, 2000, 77 (17) : 2701 - 2703

← 1 →