Results 21 to 30 of about 15,515 (260)

Highly efficient and air-stable Eu(II)-containing azacryptates ready for organic light-emitting diodes

Nature Communications, 2020
Though divalent-europium-based complexes are promising materials for next-generation light-emitting devices, their poor air stability limits their applicability.
Jiayi Li, Liding Wang, Zifeng Zhao, Boxun Sun, Ge Zhan, Huanyu Liu, Zuqiang Bian, Zhiwei Liu   +7 more
doaj   +1 more source

Singlet and triplet to doublet energy transfer: improving organic light-emitting diodes with radicals

Nature Communications, 2022
Organic light-emitting diodes must be engineered to circumvent efficiency limits imposed by the ratio of triplet to singlet exciton formation, following electron-hole capture.
Feng Li, Alexander J. Gillett, Qinying Gu, Junshuai Ding, Zhangwu Chen, Timothy J. H. Hele, William K. Myers, Richard H. Friend, Emrys W. Evans   +8 more
doaj   +1 more source

All-fluorescence white organic light-emitting diodes with record-beating power efficiencies over 130 lm W‒1 and small roll-offs

Nature Communications, 2022
High power efficiency and low roll-off values are essential to the commercialization of white organic light-emitting diodes. Here, the authors construct all-fluorescence devices with an orange emitting layer sandwiched between two sky-blue emitting ...
Hao Liu, Yan Fu, Ben Zhong Tang, Zujin Zhao   +3 more
doaj   +1 more source

Optimization of organic light emitting diode structures [PDF]

SPIE Proceedings, 2004
In this work we present detailed analysis of the emitted radiation spectrum from tris(8-hydroxyquinoline) aluminum (Alq3) based OLEDs as a function of: the choice of cathode, the thickness of organic layers, and the position of the hole transport layer/Alq3 interface.
Djurišić, AB, Chan, J, Rakić, AD, Kwong, CY, Majewski, ML, Chui, PC, Chan, WK   +6 more
openaire   +4 more sources

Comparison of ophthalmic toxicity of light-emitting diode and organic light-emitting diode light sources [PDF]

Scientific Reports, 2020
AbstractThe use of organic light-emitting diodes (OLEDs) has rapidly increased in recent years. However, the effect of OLEDs on human health has not been studied yet. We investigated morphologic and functional changes after OLEDs exposure of human ocular cells, including corneal, conjunctival, lens, and retinal pigment epithelial cells, and mouse eyes.
Ikhyun Jun, Soo Jung Han, Hae-Sol Shin, Jiyeon Kim, Eung Kweon Kim, Tae-im Kim, Sang Chul Yoon, Kyoung Yul Seo   +7 more
openaire   +3 more sources

Enhanced flexible optoelectronic devices by controlling the wettability of an organic bifacial interlayer

Communications Materials, 2021
A challenge for optoelectronic devices is the differing wettability of the organic active layer and transparent electrodes. Here, an organic interlayer which is hydrophilic or hydrophobic on each side enhances the performance of organic photovoltaic ...
Soyeon Kim, Adi Prasetio, Joo Won Han, Yongki Kim, Myunghun Shin, Jinhee Heo, Jung Ha Kim, Shinuk Cho, Yong Hyun Kim, Muhammad Jahandar, Dong Chan Lim   +10 more
doaj   +1 more source

An external quantum efficiency of >20% from solution-processed poly(dendrimer) organic light-emitting diodes

npj Flexible Electronics, 2018
Efficient OLEDs from solution: engineering dipole alignment in polymers Dipole alignment is achieved in efficient solution-processed organic light-emitting diodes featuring a novel poly(dendrimer).
Fatemeh Maasoumi, Ross D. Jansen-van Vuuren, Paul E. Shaw, Emma V. Puttock, Ravi Chandra Raju Nagiri, Jake A. McEwan, Mark Bown, Jenny L. O’Connell, Christopher J. Dunn, Paul L. Burn, Ebinazar B. Namdas   +10 more
doaj   +1 more source

Advances in display technology: augmented reality, virtual reality, quantum dot-based light-emitting diodes, and organic light-emitting diodes

Journal of Information Display
Virtual reality, augmented reality, quantum dot light-emitting diodes, and organic light-emitting diodes have progressed over the last two years. Key achievements in these displays are discussed in terms of device performance.
Jihoon Kang, Geun Woo Baek, Jun Yeob Lee, Jeonghun Kwak, Jae-Hyeung Park   +4 more
doaj   +1 more source

Recent Progress in Emerging Near-Infrared Emitting Materials for Light-Emitting Diode Applications

Organic Materials, 2020
In view of the wide applications of near-infrared (NIR) light in night vision, security, medicine, sensors, telecommunications, and military applications, and the scarcity of high-efficiency NIR-emitting materials, development of alternative NIR-emitting
Yingqi Zheng, Xiaozhang Zhu
doaj   +1 more source

White light emitting diode based on purely organic fluorescent to modern thermally activated delayed fluorescence (TADF) and perovskite materials

Nano Convergence, 2019
White organic/polymer light emitting diode (WOLED/WPLED) processed from solution has attracted significant research interest in recent years due to their low device production cost, device flexibility, easy fabrication over large area including roll to ...
Dipjyoti Das, Peddaboodi Gopikrishna, Debasish Barman, Ramesh Babu Yathirajula, Parameswar Krishnan Iyer   +4 more
doaj   +1 more source