Reversal of doping-induced energy level shift: Au on Cs-doped tris(8-hydroxyquinoline) aluminum

被引：13

作者：

Ding, HJ ^{[1
]}

Gao, YL ^{[1
]}

机构：

[1] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA

来源：

APPLIED PHYSICS LETTERS | 2005年 / 87卷 / 05期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.2007858

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We investigated the electronic structure of the interface formed by depositing Au on Cs-doped tris(8-hydroxyquinoline) aluminum (Alq) film using ultraviolet and x-ray photoemission spectroscopy. The initial Au deposition quenches the Alq gap state caused by Cs doping. Further Au depositions gradually shift the energy levels opposite to that induced by Cs doping, especially the highest occupied molecular orbital that shows approximately full recovery to the pristine Alq position. However, the recovery is only partial for the other levels, most noticeably the C 1s core level. (c) 2005 American Institute of Physics.

引用

页数：3

共 15 条

[1] Radiation-induced photoluminescence quenching of phenylene vinylene oligomer thin films [J].

Choong, VE ;

Park, Y ;

Hsieh, BR ;

Gao, Y .

PHYSICAL REVIEW B, 1997, 55 (23) :15460-15463

[2] Electronic structure of Cs-doped tris(8-hydroxyquinoline) aluminum [J].

Ding, HJ ;

Gao, YL .

APPLIED PHYSICS LETTERS, 2005, 86 (21) :1-3

[3]

Dürr AC, 2002, ADV MATER, V14, P961

[4] Cs doping and energy level shift in CuPc [J].

Gao, YL ;

Yan, L .

CHEMICAL PHYSICS LETTERS, 2003, 380 (3-4) :451-455

[5] Distinguishing between interface dipoles and band bending at metal/tris-(8-hydroxyquinoline) aluminum interfaces [J].

Hill, IG ;

Mäkinen, AJ ;

Kafafi, ZH .

APPLIED PHYSICS LETTERS, 2000, 77 (12) :1825-1827

[6]

Ishii H, 1999, ADV MATER, V11, P605, DOI 10.1002/(SICI)1521-4095(199906)11:8<605::AID-ADMA605>3.0.CO

[7]

2-Q

[8] Bright organic electroluminescent devices having a metal-doped electron-injecting layer [J].

Kido, J ;

Matsumoto, T .

APPLIED PHYSICS LETTERS, 1998, 73 (20) :2866-2868

[9] Photoemission study of aluminum/tris-(8-hydroxyquinoline) aluminum and aluminum/LiF/tris-(8-hydroxyquinoline) aluminum interfaces [J].

Le, QT ;

Yan, L ;

Gao, YG ;

Mason, MG ;

Giesen, DJ ;

Tang, CW .

JOURNAL OF APPLIED PHYSICS, 2000, 87 (01) :375-379

[10] Energy level alignment at Alq/metal interfaces [J].

Lee, ST ;

Hou, XY ;

Mason, MG ;

Tang, CW .

APPLIED PHYSICS LETTERS, 1998, 72 (13) :1593-1595

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