Journal ArticleDOI
Development of high performance OLEDs for general lighting
Hisahiro Sasabe,Junji Kido +1 more
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TLDR
The first white organic light-emitting device (OLED) was developed in 1993, and the power efficiency and lifetime of this white OLED were reportedly only < 1 lm W−1 and < 1 day, respectively.Abstract:
Since the development of the first white organic light-emitting device (OLED) in 1993, twenty years have passed. The power efficiency and lifetime of this white OLED were reportedly only <1 lm W−1 and <1 day, respectively. However, recent rapid advances in material chemistry have enabled the use of white OLEDs for general lighting. In 2012, white OLED panel efficiency has reached 90 lm W−1 at 1000 cd m−2, and a tandem white OLED panel has realized a lifetime of over 100 000 hours. What is more important in OLEDs is to shed clear light on the new design products, such as transparent lighting panels and luminescent wallpapers. These fascinating features enable OLEDs as a whole new invention of artificial lighting. In this review, we would like to overview the recent developments of white OLED, especially three key elemental technologies related to material chemistry: (1) low operating voltage technology, (2) phosphorescent OLED technology and (3) multi-photon emission (MPE) device technology.read more
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Journal ArticleDOI
Circularly polarized (CP) white organic light-emitting diode (WOLED) based on chiral organo-Sm3+ complex
Jiaxiang Liu,Baowen Wang,Zhiming Zhang,Jiamiao Yu,Xingqiang Lv,Guorui Fu,Wentao Li,Wai Yeung Wong +7 more
TL;DR: Using the designed chiral [Sm(tta)3(D-phen)] as emitter, the first example of chiral organo-Ln3+-based CP-WOLED with both attractive white-light efficiencies (EQEMax = 1.55% and CEMax= 1.61 cd/A) and high dissymmetry as mentioned in this paper .
Journal ArticleDOI
Controllable and efficient hole-injection layers with molybdenum oxide units by solution-processed procedure for OLEDs
TL;DR: In this paper, hole injection layer (HIL) with controllable and efficient property is introduced to improve the performance of organic light-emitting diodes (OLEDs).
Book ChapterDOI
Polymer/fullerene nanomaterials in optoelectronic devices: Photovoltaics, light-emitting diodes, and optical sensors
Journal ArticleDOI
Electronic Properties of Carbazole/Biphenylamino Functionalized Sulfone‐based Host Materials
Xiaopei Xu,Zehua Huang,Xue Rui Liang,Xinyuan Tang,Yong Liang Zhao,Huifang Li,Yan He,Lisheng Zhang +7 more
TL;DR: In this article , the electronic properties of dibenzo[b,d]thiophene 5,5-dioxide (DBTO) and its derivatives were investigated by quantum-chemical techniques to get more detailed information about the carbazole and biphenylamino functionalization effects on the charge injection property and triplet transition energy of such SO2-based host materials.
References
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Journal ArticleDOI
Organic Electroluminescent Diodes
Ching Wan Tang,Steven A Vanslyke +1 more
TL;DR: In this article, a double-layer structure of organic thin films was prepared by vapor deposition, and efficient injection of holes and electrons was provided from an indium-tinoxide anode and an alloyed Mg:Ag cathode.
Journal ArticleDOI
Very high-efficiency green organic light-emitting devices based on electrophosphorescence
TL;DR: In this paper, the performance of an organic light-emitting device employing the green electrophosphorescent material, fac tris(2-phenylpyridine) iridium [Ir(ppy)3] doped into a 4,4′-N,N′-dicarbazole-biphenyl host was described.
Journal ArticleDOI
White organic light-emitting diodes with fluorescent tube efficiency
Sebastian Reineke,Frank Lindner,Gregor Schwartz,Nico Seidler,Karsten Walzer,Björn Lüssem,Karl Leo +6 more
TL;DR: An improved OLED structure which reaches fluorescent tube efficiency and focuses on reducing energetic and ohmic losses that occur during electron–photon conversion, which could make white-light OLEDs, with their soft area light and high colour-rendering qualities, the light sources of choice for the future.
Journal ArticleDOI
Charge Transport in Disordered Organic Photoconductors a Monte Carlo Simulation Study
Journal ArticleDOI
Management of singlet and triplet excitons for efficient white organic light-emitting devices
Yiru Sun,Noel C. Giebink,Hiroshi Kanno,Biwu Ma,Mark E. Thompson,Stephen R. Forrest,Stephen R. Forrest +6 more
TL;DR: This device challenges incandescent sources by exhibiting total external quantum and power efficiencies that peak at 18.7 ± 0.6 lm W-1, respectively, and two distinct modes of energy transfer within this device serve to channel nearly all of the triplet energy to the phosphorescent dopants, retaining the singlet energy exclusively on the blue fluorescent dopant.