Contact formation at the C60/alkali-metal fluoride/Al interface

被引：19

作者：

Helander, M. G. ^{[1
]}

Wang, Z. B. ^{[1
]}

Lu, Z. H. ^{[1
]}

机构：

[1] Univ Toronto, Dept Mat Sci & Engn, Toronto, ON M5S 3E4, Canada

来源：

APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 08期

基金：

加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1063/1.2976307

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Efficient contact formation is critical in organic electroluminescence and photovoltaic devices that utilize fullerene (C-60). Unlike traditional electron transport molecules, such as tris-(8-hydroxy-quinolinato)aluminum (Alq(3)), C-60 is found to be highly selective of injection layers. Charge injection properties of alkali-metal fluoride injection layers at the C-60/Al cathode interface of organic light emitting diodes were studied. LiF is found to be unique amongst the alkali-metal fluorides in producing an Ohmic contact. The device performance is strongly linked to the size of the vapor phase fluoride molecules. The observed phenomena are explained by an intercalation region at the metal/organic interface. (c) 2008 American Institute of Physics.

引用

页数：3

共 31 条

[1] Degradation mechanism of small molecule-based organic light-emitting devices [J].

Aziz, H ;

Popovic, ZD ;

Hu, NX ;

Hor, AM ;

Xu, G .

SCIENCE, 1999, 283 (5409) :1900-1902

[2] Efficient CsF/Yb/Ag cathodes for organic light-emitting devices [J].

Chan, MY ;

Lai, SL ;

Fung, MK ;

Tong, SW ;

Lee, CS ;

Lee, ST .

APPLIED PHYSICS LETTERS, 2003, 82 (11) :1784-1786

[3] On a quantitative scale for Lewis acidity and recent progress in polynitrogen chemistry [J].

Christe, KO ;

Dixon, DA ;

McLemore, D ;

Wilson, WW ;

Sheehy, JA ;

Boatz, JA .

JOURNAL OF FLUORINE CHEMISTRY, 2000, 101 (02) :151-153

[4]

CHRISTIE KO, 2008, COMMUNICATION 0512

[5] MOLECULAR COMPOSITION OF ALKALI FLUORIDE VAPORS [J].

EISENSTADT, M ;

ROTHBERG, GM ;

KUSCH, P .

JOURNAL OF CHEMICAL PHYSICS, 1958, 29 (04) :797-804

[6] Ohmic cathode for low-voltage organic light-emitting diodes [J].

Feng, XD ;

Huang, CJ ;

Lui, V ;

Khangura, RS ;

Lu, ZH .

APPLIED PHYSICS LETTERS, 2005, 86 (14) :1-3

[7] AN ELECTRON-DIFFRACTION STUDY OF ALKALI FLUORIDE VAPORS [J].

HARTLEY, JG ;

FINK, M .

JOURNAL OF CHEMICAL PHYSICS, 1988, 89 (10) :6058-6063

[8]

Hou JG, 1997, PHYS STATUS SOLIDI A, V163, P403, DOI 10.1002/1521-396X(199710)163:2<403::AID-PSSA403>3.0.CO

[9]

2-D

[10] Enhanced electron injection in organic electroluminescence devices using an Al/LiF electrode [J].

Hung, LS ;

Tang, CW ;

Mason, MG .

APPLIED PHYSICS LETTERS, 1997, 70 (02) :152-154

← 1 2 3 4 →