A Numerical Device Model and Approach to Degradation Mechanisms in Organic Light Emitting Diodes

被引：2

作者：

Hirai, Tadahiko ^{[1
]}

Weber, Karl ^{[1
]}

O'Connell, Jenny ^{[1
]}

Bown, Mark ^{[1
]}

Ueno, Kazunori ^{[1
]}

机构：

[1] CSIRO, Mat Sci & Engn, Clayton, Vic 3168, Australia

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2013年 / 52卷 / 04期

关键词：

DISORDERED HOPPING SYSTEM; CHARGE-CARRIER MOBILITY; CONJUGATED POLYMER; CURRENT INJECTION; TRANSPORT; METAL; SPECTROSCOPY; CONDUCTION;

D O I：

10.7567/JJAP.52.04CK02

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We propose a novel Schottky and impedance spectroscopy (IS) numerical model to evaluate carrier injection and transport behavior of organic semiconductor materials. Using temperature-dependent current-voltage (I-V) and IS measurements of hole-only (HOD) and electron-only (EOD) devices and phosphorescent blue organic light emitting diodes (OLEDs), we have obtained values for the Richardson factor, the barrier height, trap density, density of states (DOS), and carrier mobility of organic materials and interfaces as device parameters. Therefore, we approach to degradation mechanism of the emitting zone inside of the OLEDs. (C) 2013 The Japan Society of Applied Physics

引用

页数：3

共 26 条

[1] Interface-limited injection in amorphous organic semiconductors [J].

Baldo, MA ;

Forrest, SR .

PHYSICAL REVIEW B, 2001, 64 (08)

[2] Current injection from a metal to a disordered hopping system.: III.: Comparison between experiment and Monte Carlo simulation [J].

Barth, S ;

Wolf, U ;

Bässler, H ;

Müller, P ;

Riel, H ;

Vestweber, H ;

Seidler, PF ;

Riess, W .

PHYSICAL REVIEW B, 1999, 60 (12) :8791-8797

[3] Dispersive electron transport in tris(8-hydroxyquinoline) aluminum (Alq3) probed by impedance spectroscopy -: art. no. 286601 [J].

Berleb, S ;

Brütting, W .

PHYSICAL REVIEW LETTERS, 2002, 89 (28)

[4] Thermally activated injection limited conduction in single layer N,N′-diphenyl-N,N′-bis(3-methylphenyl)1-1′-biphenyl-4,4′-diamine light emitting diodes [J].

Campbell, AJ ;

Bradley, DDC ;

Laubender, J ;

Sokolowski, M .

JOURNAL OF APPLIED PHYSICS, 1999, 86 (09) :5004-5011

[5]

Hirai T., 2012, P 36 ANN COND MATT M, pFO02

[6]

Hirai T., 2011, SID INT S, V42, P1776

[7] Middle-Term Results of a Prospective Comparative Study of Anterior Decompression With Fusion and Posterior Decompression With Laminoplasty for the Treatment of Cervical Spondylotic Myelopathy [J].

Hirai, Takashi ;

Okawa, Atsushi ;

Arai, Yoshiyasu ;

Takahashi, Makoto ;

Kawabata, Shigenori ;

Kato, Tsuyoshi ;

Enomoto, Mitsuhiro ;

Tomizawa, Shoji ;

Sakai, Kenichiro ;

Torigoe, Ichiro ;

Shinomiya, Kenichi .

SPINE, 2011, 36 (23) :1940-1947

[8] Degradation in blue-emitting conjugated polymer diodes due to loss of ohmic hole injection [J].

Khan, RUA ;

Bradley, DDC ;

Webster, MA ;

Auld, JL ;

Walker, AB .

APPLIED PHYSICS LETTERS, 2004, 84 (06) :921-923

[9] SCHOTTKY EMISSION AND CONDUCTION IN SOME ORGANIC INSULATING MATERIALS [J].

LENGYEL, G .

JOURNAL OF APPLIED PHYSICS, 1966, 37 (02) :807-+

[10] Simultaneous measurement of electron and hole mobilities in polymer light-emitting diodes [J].

Martens, HCF ;

Huiberts, JN ;

Blom, PWM .

APPLIED PHYSICS LETTERS, 2000, 77 (12) :1852-1854

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