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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Optimized electron-transport material based on m-terphenyl-diphenylphosphine oxide with the harmonious compatibility of high ET and electron mobility for highly efficient OLEDs
Qing Zhang,Bo Wang,Jianghong Tan,Guangyuan Mu,Wei Yi,Xialei Lv,Shaoqing Zhuang,Wei Liu,Lei Wang +8 more
TL;DR: In this paper, two electron transporting materials, [1,1′:3′, 1′′-terphenyl]-3,3′-diylbis(diphenylphosphine oxide) (BmPOPB) and [ 1,1'':3'', 1''′-TERPNyl]-4,4′-biophosphine dioxide (BpPOPE), have been designed and synthesized by appending a diphenyl phosphine oxide moiety to the m-TERphenyl core via meta-
Journal ArticleDOI
Sensitivity of Redox and Optical Properties of Electroactive Carbazole Derivatives to the Molecular Architecture and Methoxy Substitutions
Xavier Sallenave,Audrius Bucinskas,Seyhan Salman,Dmytro Volyniuk,Oleksandr Bezvikonnyi,Viktorija Mimaite,Juozas V. Grazulevicius,Gjergji Sini +7 more
TL;DR: In the domain of organic light-emitting diode (OLED) applications, organic electroactive materials play a crucial role as mentioned in this paper, in order to allow for more flexibility in their properties, methoxy or other...
Journal ArticleDOI
Fluorescence enhancement of non-fluorescent triphenylamine: A recipe to utilize carborane cluster substituents
TL;DR: Carborane-substituted triphenylamines were used in this paper to suppress the non-radiative decay by reduced vibronic coupling, leading to an increase in fluorescence quantum yield by suppressing internal conversion.
Journal ArticleDOI
New homoleptic iridium complexes with C∧NN type ligand for high efficiency orange and single emissive-layer white OLEDs
Li Yuan Guo,Xun Lu Zhang,Hai Shan Wang,Chen Liu,Zhigang Li,Zhang Jin Liao,Bao Xiu Mi,Xin Hui Zhou,Chao Zheng,Yong-Hua Li,Zhi Qiang Gao +10 more
TL;DR: In this paper, the authors developed two new strong orange-emission and thermally stable iridium complexes, IrCzPPya {tris[9-(6-phenylpyridazin-3-yl)-9H-carbazole]iridium(III] and IrNPPya [tris(N,N,6-triphenylpolymorphic pyridinato-N,C2′)(picolinate)iridium (III)] by introducing a hole transporting moiety to the C∧NN type lig
Journal ArticleDOI
Efficient fluorescence/phosphorescence white organic light-emitting diodes with ultra high color stability and mild efficiency roll-off
TL;DR: In this article, an efficient fluorescence/phosphorescence hybrid white organic light-emitting diodes (OLEDs) with single doped co-host structure have been fabricated.
References
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Journal ArticleDOI
Organic Electroluminescent Diodes
Ching Wan Tang,Steven A Vanslyke +1 more
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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.
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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.