Journal ArticleDOI
Development of high performance OLEDs for general lighting
Hisahiro Sasabe,Junji Kido +1 more
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
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Journal ArticleDOI
Optoelectronic properties of (Z)-3-(4-(4,5-diphenyl-1H-imidazole-2-yl)phenyl)-2-phenylacrylonitrile films under acid and thermal environments for tuning OLED emission
Wilson Bernal,Karnambaram Anandhan,M. Judith Percino,Oracio Barbosa-García,Enrique Pérez-Gutiérrez,Margarita Cerón,José-Luis Maldonado,Martha Sosa Rivadeneyra,Subbiah Thamotharan +8 more
TL;DR: In this paper, a systematic study of changes on optoelectronic properties of (Z)-3-(4,5-diphenyl-1H-imidazole-2-yl)phenyl)-2-phenylacrylonitrile (DPimdPPA) based films was reported.
Posted ContentDOI
Excited State Dynamics of Bay and Peri Benzothienyl Perylene to Understand the Excimer Formation and its Dissociation
Journal ArticleDOI
Achieving White‐Light Emission Using Organic Persistent Room Temperature Phosphorescence
TL;DR: White persistent RTP (RTP) has potential for applications in energy-efficient lighting technologies, due to their ability to harvest both singlet and triplet excitons as mentioned in this paper .
Journal ArticleDOI
Carbazole-Dendronized Luminescent Radicals.
Rui Xiaotian,Wataru Ota,Toru Sato,Minori Furukori,Yasuo Nakayama,Takuya Hosokai,Eri Hisamura,Kazuhiro Nakamura,K. Matsuda,Kohei Nakao,Andrew P. Monkman,Ken Albrecht +11 more
TL;DR: In this article , a series of carbazole dendronized tri(2,4,6-trichlorophenyl)methyl (TTM) radicals were synthesized.
Journal ArticleDOI
Imidazole-based fluorophores: Synthesis and applications
TL;DR: In this paper , the design and synthesis of imidazole-based fluorophores with or without aggregation-induced emission and mechanofluorochromism features and their application in organic light emitting diodes or biosensors or chemosensors is discussed.
References
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Ching Wan Tang,Steven A Vanslyke +1 more
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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.