Results 21 to 30 of about 5,123,134 (289)

Investigation progresses of rare earth complexes as emitters or sensitizers in organic light-emitting diodes

Light: Science & Applications, 2022
Investigation Progresses of Rare Earth Complexes as Emitters or Sensitizers in Organic Light-Emitting ...
Shuaibing Li, Liang Zhou, Hongjie Zhang
doaj   +1 more source

Influence of cavity thickness and emitter orientation on the efficiency roll-off of phosphorescent organic light-emitting diodes [PDF]

, 2014
This article describes the first systematic investigation of how the efficiency roll-off in organic light-emitting diodes (OLEDs) is influenced by the position and orientation of the emitter molecules within the OLED cavity.
Gather, Malte Christian, Murawski, Caroline, Liehm, Philipp, Leo, Karl   +3 more
core   +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

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

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

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

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

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

Get it white : color-tunable AC/DC OLEDs [PDF]

, 2015
This work was funded by the European Social Fund and the Free State of Saxony through the OrthoPhoto project. We kindly acknowledge the support from NUDEV.Organic light-emitting diodes (OLEDs) have gained considerable attention because of their use of ...
Kliem, Mona, Gather, Malte C., Hofmann, Simone, Schwab, Tobias, Froebel, Markus, Leo, Karl   +5 more
core   +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