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
N-Doped Graphene and Polymer Sequent Nanocomposite—Nitty-Gritties and Scoping Insights
TL;DR: In this article , Nitrogen doping has been applied as an effective method to modify the properties and potential applications of Graphene, which is an important type of nanocarbon having two-dimensional sp2 hybridized nanostructure.
Journal ArticleDOI
Recent Progress and Prospects of Fluorescent Materials Based on Narrow Emission
TL;DR: The TADF emitters have been rapidly developed over a decade, and they all have efficiencies in excess of 35% in the visible range as mentioned in this paper , despite their high external energy consumption.
Journal ArticleDOI
Analysis of device performance and thin-film properties of thermally damaged organic light-emitting diodes
Changmin Lee,Won-Ho Lee,Geon-Woo Jeong,Dong Hyun Kim,Dong Hyun Choi,Tae Wook Kim,Amjad Islam,P. Justin Jesuraj,P. Justin Jesuraj,Hassan Hafeez,Hyung Ju Chae,Hyunmin Hong,Kwun-Bum Chung,Sanghyuk Park,Myungkwan Song,Chang Su Kim,Seung Yoon Ryu +16 more
TL;DR: In this article, the variation in the optical and geometrical properties of individual organic layers to be used for thermally damaged top-emission organic light-emitting diodes (TEOLEDs) was reported.
Journal ArticleDOI
The effect of the electron-donor ability on the OLED efficiency of twisted donor-acceptor type emitters
TL;DR: In this paper, two twisted donor-acceptor (D-A) chemical structures, CCDMB and PCDMB, were developed as a new class of thermally activated delayed fluorescence (TADF) emitters for organic light-emitting diodes (OLEDs).
Journal ArticleDOI
Layer-Structured Anisotropic Metal Chalcogenides: Recent Advances in Synthesis, Modulation, and Applications
TL;DR: A comprehensive overview of the recent progress made in the synthesis, mechanistic understanding, property modulation strategies, and applications of the anisotropic chalcogenides can be found in this paper .
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.