Journal ArticleDOI
Development of high performance OLEDs for general lighting
Hisahiro Sasabe,Junji Kido +1 more
Reads0
Chats0
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
Citations
More filters
Journal ArticleDOI
Recent Developments in Tandem White Organic Light-Emitting Diodes.
TL;DR: This invited review has described fundamental concepts of tandem device architectures and their use in WOLEDs, and summarized the state-of-the-art strategies to achieve high-performance tandem WolEDs in recent years.
Journal ArticleDOI
New carbazole-substituted siloles for the fabrication of efficient non-doped OLEDs
Yi Xiong,Jiajie Zeng,Bin Chen,Jacky Wing Yip Lam,Zujin Zhao,Shuming Chen,Ben Zhong Tang,Ben Zhong Tang +7 more
TL;DR: In this paper, a series of new carbazole-substituted siloles have been synthesized and characterized, and their crystal and electronic structures, thermal stabilities, electrochemical behaviors, and photophysical properties are thoroughly investigated.
Journal ArticleDOI
Hybrid white organic light emitting diodes with low efficiency roll-off, stable color and extreme brightness
TL;DR: In this paper, a hybrid white organic light emitting diodes (WOLEDs) based on simple architectures have been successfully fabricated and characterized, and the optimized device can reach a maximum forward-viewing power efficiency (PE) of 20.2 lm/W, a peak forwardviewing current efficiency (CE) of 30.7, and an extremely high brightness of 95,683cd/m2.
Journal ArticleDOI
A stepwise energy level doping structure for improving the lifetime of phosphorescent organic light-emitting diodes
TL;DR: A stepwise energy level doping structure for improving the lifetime of organic light-emitting diodes was developed by doping two emitters with different energy levels in the same host material as separated emitting layers.
Journal ArticleDOI
Superior Efficiency and Low-Efficiency Roll-Off White Organic Light-Emitting Diodes Based on Multiple Exciplexes as Hosts Matched to Phosphor Emitters.
Shian Ying,Peiyuan Pang,Shuai Zhang,Qian Sun,Yanfeng Dai,Xianfeng Qiao,Dezhi Yang,Jiangshan Chen,Dongge Ma +8 more
TL;DR: A new design concept using multiple exciplexes as hosts to match different phosphors has been demonstrated to develop high-performance WOLEDs, and the keys to success are the selection of the different exciplex hosts matched to different phosphor and the reasonable arrangement of emissive layers.
References
More filters
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.