Spin and device engineering for blue organic light emitting devices

被引：7

作者：

Segal, M. ^{[1
]}

Mulder, C. ^{[1
]}

Celebi, K. ^{[2
]}

Singh, M. ^{[1
]}

Rivoire, K. ^{[2
]}

Difley, S. ^{[3
]}

Van Voorhis, T. ^{[3
]}

Baldo, M. A. ^{[1
]}

机构：

[1] MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA

[2] MIT, Dept Phys, Cambridge, MA 02139 USA

[3] MIT, Dept Chem, Cambridge, MA 02139 USA

来源：

ORGANIC OPTOELECTRONICS AND PHOTONICS III | 2008年 / 6999卷

关键词：

D O I：

10.1117/12.782407

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The realization of stable, high efficiency blue organic light emitting devices (OLEDs) remains challenging. The efficiency of blue fluorescent OLEDs is fundamentally limited, and blue phosphors are typically less stable. We discuss potential solutions to these problems. We show that device engineering can be used to optimize the color of a relatively stable and efficient blue-green phosphor. In addition, we demonstrate the ability to manipulate the fraction of excitons which form as singlets in fluorescent materials by inserting a mixing layer that affects only the precursors to excitons.

引用

页数：17

共 16 条

[1]

ARAKANE T, 2006, SID 2006, V5, P37

[2] Excitonic singlet-triplet ratio in a semiconducting organic thin film [J].

Baldo, MA ;

O'Brien, DF ;

Thompson, ME ;

Forrest, SR .

PHYSICAL REVIEW B, 1999, 60 (20) :14422-14428

[3] High-efficiency fluorescent organic light-emitting devices using a phosphorescent sensitizer [J].

Baldo, MA ;

Thompson, ME ;

Forrest, SR .

NATURE, 2000, 403 (6771) :750-753

[4] Highly efficient phosphorescent emission from organic electroluminescent devices [J].

Baldo, MA ;

O'Brien, DF ;

You, Y ;

Shoustikov, A ;

Sibley, S ;

Thompson, ME ;

Forrest, SR .

NATURE, 1998, 395 (6698) :151-154

[5] Weak microcavity effects in organic light-emitting devices [J].

Bulovic, V ;

Khalfin, VB ;

Gu, G ;

Burrows, PE ;

Garbuzov, DZ ;

Forrest, SR .

PHYSICAL REVIEW B, 1998, 58 (07) :3730-3740

[6] Simplified calculation of dipole energy transport in a multilayer stack using dyadic Green's functions [J].

Celebi, K. ;

Heidel, T. D. ;

Baldo, M. A. .

OPTICS EXPRESS, 2007, 15 (04) :1762-1772

[7] Spin-dependent recombination and electroluminescence quantum yield in conjugated polymers [J].

Hong, TM ;

Meng, HF .

PHYSICAL REVIEW B, 2001, 63 (07)

[8] Spin-dependent electron-hole capture kinetics in luminescent conjugated polymers [J].

Karabunarliev, S ;

Bittner, ER .

PHYSICAL REVIEW LETTERS, 2003, 90 (05) :4

[9] Quantum molecular dynamics study of polaron recombination in conjugated polymers [J].

Kobrak, MN ;

Bittner, ER .

PHYSICAL REVIEW B, 2000, 62 (17) :11473-11486

[10] Saturated and efficient blue phosphorescent organic light emitting devices with Lambertian angular emission [J].

Mulder, C. L. ;

Celebi, K. ;

Milaninia, K. M. ;

Baldo, M. A. .

APPLIED PHYSICS LETTERS, 2007, 90 (21)

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