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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Excellent n-type light emitters based on AIE-active silole derivatives for efficient simplified organic light-emitting diodes
TL;DR: In this paper, the authors designed and synthesized four new silole derivatives, (PBI)2DMTPS, (PPI)2MPPS,(PPI), 2MPPSs, and PPI-2DMPS, consisting of the 2,3,4,5-tetraphenylsilole unit and 1-phenyl-1H-benzo[d]imidazole (PIPI) groups.
Journal ArticleDOI
Perovskite White Light Emitting Diodes: Progress, Challenges, and Opportunities.
Jiawei Chen,Hengyang Xiang,Jing Wang,Run Wang,Yan Li,Qingsong Shan,Xiaobao Xu,Yuhui Dong,Changting Wei,Haibo Zeng +9 more
TL;DR: In this article, low-carbon and energy-saving lighting technology has attracted great attention worldwide, as global warming, energy shortages, and environment pollution have intensified, low carbon and energy saving lighting technology attracted great interest worldwide.
Journal ArticleDOI
Exciplex-Forming Cohost for High Efficiency and High Stability Phosphorescent Organic Light-Emitting Diodes.
Chun-Jen Shih,Chih-Chien Lee,Ying-Hao Chen,Sajal Biring,Gautham Kumar,Tzu-Hung Yeh,Somaditya Sen,Shun-Wei Liu,Ken-Tsung Wong,Ken-Tsung Wong +9 more
TL;DR: An exciplex forming cohost system is employed to achieve a highly efficient organic light-emitting diode (OLED) with good electroluminescent lifetime and a significant difference of device stability was attributed to the degradation ofexciplex system for energy transfer process.
Journal ArticleDOI
A review on the electroluminescence properties of quantum-dot light-emitting diodes
TL;DR: In this paper, the authors reviewed the electroluminescence properties and fabrication/characterization technologies of quantum dots and discussed the strategies to improve the device performance by interface modification and QD design.
Journal ArticleDOI
para-Selective Alkylation of Sulfonylarenes by Cooperative Nickel/Aluminum Catalysis
Shogo Okumura,Yoshiaki Nakao +1 more
TL;DR: A method for the para-selective alkylation of a variety of arenesulfonamides and aromatic sulfones with 1-alkenes by cooperative nickel/aluminum catalysis has been developed and can be applied to facile access to 1,3-dialkyl-substitued benzenes.
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.
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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.
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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.
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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.