Results 21 to 30 of about 86,155 (352)

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

Anisotropic materials in OLEDs for high outcoupling efficiency [PDF]

, 2015
We present the results of an optical study in which we evaluate the effect of anisotropic electron transport layers (ETL) and anisotropic hole transport layers (HTL) on the outcoupling efficiency of bottom emitting organic light emitting diodes (OLEDs ...
Callens, Michiel, Neyts, Kristiaan, Yokoyama, Daisuke   +2 more
core   +1 more source

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

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

White organic light-emitting diodes with an ultra-thin premixed emitting layer [PDF]

, 2013
We described an approach to achieve fine color control of fluorescent White Organic Light-Emitting Diodes (OLED), based on an Ultra-thin Premixed emitting Layer (UPL).
Bonnassieux, Yvan, Chenais, Sebastien, Forget, Sebastien, Geffroy, Bernard, Ishow, Elena, Jeon, T., Tondelier, Denis   +6 more
core   +4 more sources

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

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

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

High-efficiency all-solution-processed light-emitting diodes based on anisotropic colloidal heterostructures with polar polymer injecting layers [PDF]

, 2015
Colloidal quantum dots (QDs) are emerging as true candidates for light-emitting diodes with ultrasaturated colors. Here, we combine CdSe/CdS dot-in-rod hetero-structures and polar/polyelectrolytic conjugated polymers to demonstrate the first example of ...
Brovelli, Sergio, Castelli, Andrea, Galeotti, Francesco, Giovanella, Umberto, Lorenzon, Monica, Manna, Liberato, Meinardi, Francesco, Moreels, Iwan, Pasini, Mariacecilia, Pinchetti, Valerio   +9 more
core   +4 more sources

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