Electric conduction of electroluminescent metal chelate thin films

被引：5

作者：

Era, M ^{[1
]}

Ikeda, Y ^{[1
]}

Tokuhisa, H ^{[1
]}

Tsutsui, T ^{[1
]}

机构：

[1] Kyushu Univ, Grad Sch Engn Sci, Dept Mat Sci & Technol, Fukuoka 816, Japan

来源：

MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 1999年 / 327卷

关键词：

mobility; conductivity; metal chelate; electroluminescence;

D O I：

10.1080/10587259908026806

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Electric conduction in vacuum-deposited films of electroluminescent metal-chelates, tris-(8-hydroxyquinoline) aluminum (Alq3) and zinc bis-(2-(o-hydroxypheyl)-benzoxazolate)) (ZnPBO), were studied by current (I)-voltage (V) measurement. The I-V characteristics demonstrated that the films exhibited trap-controlled conduction. For the Alq3 film, conductivity sigma was estimated to be 3.0 x 10(-15) Scm(-1) from the characteristic in ohmic current region. From the I-V characteristic in space charge limited current region, further, carrier mobility mu of the Alq3 film was estimated to be 5.0 x 10(-7) cm(2)V(-1)s(-1): this value is in good agreement with electron mobility evaluated by the time-of-fight technique. For ZnPBO, the values of sigma and mu were estimated to be 2.0 x 10(-14) Scm(-1) and 7.0 x 10(-6) cm(2)V(-1)s(-1), respectively.

引用

页码：171 / 174

页数：4

共 5 条

[1] METAL-ION DEPENDENT LUMINESCENCE EFFECTS IN METAL TRIS-QUINOLATE ORGANIC HETEROJUNCTION LIGHT-EMITTING DEVICES [J].

BURROWS, PE ;

SAPOCHAK, LS ;

MCCARTY, DM ;

FORREST, SR ;

THOMPSON, ME .

APPLIED PHYSICS LETTERS, 1994, 64 (20) :2718-2720

[2] A NOVEL BLUE-LIGHT-EMITTING MATERIAL PREPARED FROM 2-(O-HYDROXYPHENYL)BENZOXAZOLE [J].

NAKAMURA, N ;

WAKABAYASHI, S ;

MIYAIRI, K ;

FUJII, T .

CHEMISTRY LETTERS, 1994, (09) :1741-1742

[3]

SHER H, 1973, J APPL PHYS, V44, P2908

[4] ORGANIC ELECTROLUMINESCENT DIODES [J].

TANG, CW ;

VANSLYKE, SA .

APPLIED PHYSICS LETTERS, 1987, 51 (12) :913-915

[5]

TSUTSUI T, IN PRESS SPIE P

← 1 →