ESR study of alkali-doped polyacenic semiconductor (PAS) materials prepared by thermal decomposition of azides

被引：2

作者：

Ago, H ^{[1
]}

Kuga, T ^{[1
]}

Yamabe, T ^{[1
]}

Tanaka, K ^{[1
]}

Yata, S ^{[1
]}

Ando, N ^{[1
]}

机构：

[1] KANEBO LTD,BATTERY BUSINESS PROMOT,MIYAKOJIMA KU,OSAKA 534,JAPAN

来源：

CARBON | 1997年 / 35卷 / 05期

基金：

日本学术振兴会;

关键词：

pyrolytic carbon; intercalation; electron spin resonance; electronic structure;

D O I：

10.1016/S0008-6223(97)00009-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The alkali-doped polyacenic semiconductor (PAS) materials have been prepared by thermal decomposition of alkali azides (AN(3), where A=Li, Na, K and Rb) in vacuo, and their electronic properties have been studied based on the electron spin resonance (ESR) spectral measurements as functions of atomic number (Z) of the dopant metal and of temperature (T) in the range 2-300 K. From the ESR spectrum, it was confirmed that the PAS material was successfully doped by a certain amount of alkali metal. The value of ESR linewidth was found to increase with Z and to linearly decrease with decreasing T. This behavior strongly suggests that conduction electrons generated by the doping have some probability to locate on the dopant metal atom and that such a location is probably suppressed at low temperatures in a rather uniform manner irrespective of metal species. (C) 1997 Elsevier Science Ltd.

引用

页码：651 / 656

页数：6

共 32 条

[11] PREPARATION AND PROPERTIES OF LITHIUM-DOPED C-60 BY LITHIUM AZIDE [J].

IMAEDA, K ;

YAKUSHI, K ;

INOKUCHI, H .

FULLERENE SCIENCE AND TECHNOLOGY, 1995, 3 (05) :545-552

[12] NUCLEAR MAGNETIC RELAXATION AND RESONNANCE LINE SHIFT IN METALS [J].

KORRINGA, J .

PHYSICA, 1950, 16 (7-8) :601-610

[13]

LAUGINIE P, 1993, SYNTHETIC MET, V55, P3002

[14]

MCMILLAN JA, 1966, HARTREEFOCK PARAMETE

[15]

MELLOR W, 1961, MELLORS COMPREHENSIV, V2, P77

[16]

MILLER MW, 1950, INORGANIC SYNTHESES, V3, P139

[17]

MOORE CE, 1949, 467 NBS US CIRC, V1

[18] ELECTRON-SPIN-RESONANCE STUDY OF THE TEMPERATURE-DEPENDENCE OF METALLIC COMPLEXES OF ALKALI-METAL-DOPED POLYACETYLENE [J].

RACHDI, F ;

BERNIER, P .

PHYSICAL REVIEW B, 1986, 33 (11) :7817-7819

[19] EFFECTIVE IONIC RADII IN OXIDES AND FLUORIDES [J].

SHANNON, RD ;

PREWITT, CT .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL CRYSTALLOGRAPHY AND CRYSTAL CHEMISTRY, 1969, B 25 :925-&

[20]

TAKAGI S, 1972, QUANTUM MECH, V2, P72

← 1 2 3 4 →