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
Balancing charge injection in quantum dot light-emitting diodes to achieve high efficienciy of over 21%
TL;DR: In this paper , the carrier transport layer was optimized to balance the charge injection in QLEDs by optimizing different organic hole transport layers with a suitable thickness to match the electron transport layer (ETL) of ZnO.
Journal ArticleDOI
Synthesis of an Organic–Inorganic Alq 3 -Based Hybrid Material by Sol–Gel Method
TL;DR: In this paper, a solution processable tris(8-hydroxyqu-inolinato)aluminum (Alq3)-containing organic inorganic hybrid material was synthesized from 8-hydroxquinoline-5-sulfonic acid and alkoxysilane precursors using a sol-gel method.
Journal ArticleDOI
Combined first-principles and electromagnetic simulation study of n-type doped anatase TiO2 for the applications in infrared surface plasmon photonics
Thien Duc Ngo,Thien Duc Ngo,Thang Duy Dao,Nguyen Thanh Cuong,Naoto Umezawa,Naoto Umezawa,Tadaaki Nagao,Tadaaki Nagao +7 more
TL;DR: In this article, the electronic structures and optical properties of doped anatase were investigated in the infrared region using first-principles density functional theory with the independent-particle approximation.
Book ChapterDOI
Conjugated Polymer Electroluminescent Materials
Xing Guan,Shenjian Liu,Fei Huang +2 more
TL;DR: An overview of the recent development of polymer electroluminescent materials as the active layer in PLEDs is provided in this article, where the relationships between molecular structure and device performance are discussed.
New Materials and Device Designs for Organic Light-Emitting Diodes
TL;DR: Li et al. as discussed by the authors developed a Pt-based red, green and blue emitters for lighting applications and compared the red/blue structure with a red/green/blue structures to produce light with high color rendering index.
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.