Excited state complex and electroluminescence in TPD-based single layer device

被引：9

作者：

Nayak, Pabitra K. ^{[2
]}

Patankar, Meghan P. ^{[1
]}

Narasimhan, K. L. ^{[1
]}

Periasamy, N. ^{[2
]}

机构：

[1] Tata Inst Fundamental Res, Dept Condensed Matter Phys & Mat Sci, Bombay 400005, Maharashtra, India

[2] Tata Inst Fundamental Res, Dept Chem Sci, Bombay 400005, Maharashtra, India

来源：

JOURNAL OF LUMINESCENCE | 2010年 / 130卷 / 07期

关键词：

TPD; Excimer and white OLED; NORMALIZED EMISSION-SPECTROSCOPY; HOLE-TRANSPORT MATERIALS; MOLECULAR-CONFORMATION; EXCIPLEX EMISSION; ENERGETICS; CRYSTAL; FILMS;

D O I：

10.1016/j.jlumin.2010.02.016

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

N-N'-diphenyl-N,N'-(bis(3-methylphenyl)-1,1'-biphenyl-4,4'-diamine) (TPD), was used to fabricate single layer devices (ITO/TPD/Ca/Al). A near-white emission (CIE coordinate of 0.25, 0.24) is observed in electroluminescence (EL) of the single layer device with prominent emission bands at 400, 475 and 670 nm. Steady state and time-resolved emission spectra of spin-coated and annealed TPD films and TRES and TRANES analysis confirmed that emission at 400 and 475 nm are due to monomer and excimer emission, respectively. The origin of the red emission at 670 nm in EL is discussed. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1174 / 1178

页数：5

共 32 条

[1]

BALDO M, 2001, THESIS PRINCETON U

[2]

Cramer C.J., 2002, Essentials of Computational Chemistry: Theories and Models

[3]

Frisch M.J., 2009, Gaussian09, Revison A.02

[4] A mechanistic study of exciplex formation and efficient red light-emitting devices based on rare earth complexes [J].

Hong, ZR ;

Lengyel, O ;

Lee, CS ;

Lee, ST .

ORGANIC ELECTRONICS, 2003, 4 (2-3) :149-154

[5] Electronic structures of TPD/metal interfaces studied by photoemission and Kelvin probe method [J].

Ito, E ;

Oji, H ;

Hayashi, N ;

Ishii, H ;

Ouchi, Y ;

Seki, K .

APPLIED SURFACE SCIENCE, 2001, 175 :407-411

[6] Enhanced optoelectronic properties of UV-light-induced photodegraded TPD [J].

Joshi, M. P. ;

Mohan, S. Raj ;

Dhami, T. S. ;

Jain, B. ;

Singh, M. K. ;

Ghosh, H. ;

Shripathi, T. ;

Deshpande, U. P. .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2008, 90 (02) :351-358

[7] Unusual disparity in electroluminescence and photoluminescence spectra of vacuum-evaporated films of 1,1-bis ((di-4-tolylamino) phenyl) cyclohexane [J].

Kalinowski, J ;

Giro, G ;

Cocchi, M ;

Fattori, V ;

Di Marco, P .

APPLIED PHYSICS LETTERS, 2000, 76 (17) :2352-2354

[8] The nature of emitting states in electroluminescence of polymeric films doped with anthracene and anthracene-based supramolecules [J].

Kalinowski, J ;

Giro, G ;

Cocchi, M ;

Fattori, V ;

Zamboni, R .

CHEMICAL PHYSICS, 2002, 277 (03) :387-396

[9] Mixing of excimer and exciplex emission: A new way to improve white light emitting organic electrophosphorescent diodes [J].

Kalinowski, Jan ;

Cocchi, Massimo ;

Virgili, Dalia ;

Fattori, Valeria ;

Williams, J. A. Gareth .

ADVANCED MATERIALS, 2007, 19 (22) :4000-+

[10] Tetraaryl biphenyl diamine hole transport materials: a structural study utilizing both single crystal and high resolution powder diffraction [J].

Kennedy, AR ;

Smith, WE ;

Tackley, DR ;

David, WIF ;

Shankland, K ;

Brown, B ;

Teat, SJ .

JOURNAL OF MATERIALS CHEMISTRY, 2002, 12 (02) :168-172

← 1 2 3 4 →