Results 21 to 30 of about 30,403 (309)

Improved Charge Injection and Transport of Light-Emitting Diodes Based on Two-Dimensional Materials

Applied Sciences, 2019
Light-emitting diodes (LEDs) are considered to be the most promising energy-saving technology for future lighting and display. Two-dimensional (2D) materials, a class of materials comprised of monolayer or few layers of atoms (or unit cells), have ...
Yuanming Zhou, Sijiong Mei, Dongwei Sun, Neng Liu, Fei Mei, Jinxia Xu, Xianan Cao   +6 more
doaj   +1 more source

Organic additive engineering toward efficient perovskite light‐emitting diodes

InfoMat, 2020
Perovskite materials with excellent optical and electrical properties are promising for light‐emitting diodes. In the field of perovskite light‐emitting diodes (PeLEDs), organic materials additive engineering has been proved to be an effective scheme for
Yuqiang Liu, Luis K. Ono, Yabing Qi
doaj   +1 more source

Electroplex as a New Concept of Universal Host for Improved Efficiency and Lifetime in Red, Yellow, Green, and Blue Phosphorescent Organic Light‐Emitting Diodes

Advanced Science, 2018
A new concept of host, electroplex host, is developed for high efficiency and long lifetime phosphorescent organic light‐emitting diodes by mixing two host materials generating an electroplex under an electric field.
Wook Song, Jun Yeob Lee, Yong Joo Cho, Hyeonghwa Yu, Hany Aziz, Kang Mun Lee   +5 more
doaj   +1 more source

Nanosecond-time-scale delayed fluorescence molecule for deep-blue OLEDs with small efficiency rolloff

Nature Communications, 2020
Deep-blue emitting organic materials with low exciton lifetime are required to realize efficient organic light-emitting diodes (OLEDs) at high brightness.
Jong Uk Kim, In Seob Park, Chin-Yiu Chan, Masaki Tanaka, Youichi Tsuchiya, Hajime Nakanotani, Chihaya Adachi   +6 more
doaj   +1 more source

Efficient and mechanically robust stretchable organic light-emitting devices by a laser-programmable buckling process

Nature Communications, 2016
Highly stretchable organic light-emitting diodes tend to suffer from a lack of mechanical robustness. Here, Yin et al. fabricate ordered buckled films by laying flexible light-emitting diodes on laser-ablated, prestretched substrates. The devices exhibit
Da Yin, Jing Feng, Rui Ma, Yue-Feng Liu, Yong-Lai Zhang, Xu-Lin Zhang, Yan-Gang Bi, Qi-Dai Chen, Hong-Bo Sun   +8 more
doaj   +1 more source

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
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Wavelength-Multiplexed Polymer LEDs: Towards 55 Mb/s Organic Visible Light Communications [PDF]

, 2015
We present recent progress on visible light communication systems using polymer light-emitting diodes as the transmitters and a commercial silicon photodetector as the receiver.
Papakonstantinou, I, Bausi, Francesco, Haigh, PA, Cacialli, Franco, Haigh, Paul Anthony, Le Minh, H, Burton, A, Cacialli, F, Popoola, Wasiu Oyewole, Bausi, F, Papakonstantinou, Ioannis, Popoola, Wasiu O., Burton, Andrew, Haigh, Paul, Le Minh, Hoa, Popoola, WO   +15 more
core   +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

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