Results 111 to 120 of about 17,940 (246)

Vacuum Thermal Evaporation for OLEDs: Fundamentals, Optimization, and Implications for Perovskite LEDs

Advanced Electronic Materials
Organic light‐emitting diodes (OLEDs) are central to high‐end displays and solid‐state lighting due to their small thickness and high flexibility, wide color gamut, and low power consumption.
Chenxi Shen, Ying Hu, Siqian Zhou, Ziquan He, Junchao Han, Daquan Zhang, Lei Lu, Xiaoliang Mo, Qianpeng Zhang   +8 more
doaj   +1 more source

Non-Doped Sky-Blue OLEDs Based on Simple Structured AIE Emitters with High Efficiencies at Low Driven Voltages

, 2017
Blue organic light-emitting diodes (OLEDs) are necessary for flat-panel display technologies and lighting applications. To make more energy-saving, low-cost and long-lasting OLEDs, efficient materials as well as simple structured devices are in high ...
Dongdong Zhang, Ling Hong, Wei Song, Ziyi Ge, Song, Wei, Amjad Islam, Yang, Rongjuan, Qiang Wei, Zhang, Dongdong, Ruixiang Peng, Lian Duan, Wei, Qiang, Duan, Lian, Hong, Ling, Ge, Ziyi, Peng, Ruixiang, Islam, Amjad, Rongjuan Yang   +17 more
core   +1 more source

Free Charge Generation in Organic Photoconversion Devices–the Impact of Electrostatic Potentials

Advanced Energy Materials, EarlyView.
Free charge generation in organic photovoltaic and photodetector devices typically requires an external driving force to separate bound excitons formed upon photoexcitation. This review details how electrostatic potentials, arising from molecular charge distributions in organic semiconductors, can impact interfacial energetic landscapes and promote ...
Emily J. Yang, Song Yi Park, Vick Y. Qiu, Ji‐Seon Kim   +3 more
wiley   +1 more source

TADF‐Active Tetrazole Luminophores for Visible‐Light Functionalization of Nanoparticles and Surfaces

Angewandte Chemie, EarlyView.
A series of tetrazoles are reported that undergo 1,3‐dipolar cycloadditions with alkene and alkyne substrates, generating (dihydro)pyrazole products that exhibit thermally activated delayed fluorescence (TADF). The “photo‐click” reactivity of these tetrazoles is leveraged to functionalize nanoparticles and surfaces with TADF‐active chromophores ...
Ryoga Hojo, Katrina Bergmann, Siyuan L. Xie, Connor S. Durfy, William L. Primrose, Athan T. Gogoulis, Seja A. Elgadi, Mitchell J. Demchuk, Thomas Kalab, Peiqi Hu, Eva M. Nichols, Zachary M. Hudson   +11 more
wiley   +2 more sources

Realization of high-efficiency fluorescent organic light-emitting diodes with low driving voltage

Nature Communications, 2019
Though organic light-emitting diodes (OLEDs) with electroluminescence at sub-bandgap voltages have been reported, realizing high efficiency in such a device is difficult.
Amin Salehi, Chen Dong, Dong-Hun Shin, Liping Zhu, Christopher Papa, Anh Thy Bui, Felix N. Castellano, Franky So   +7 more
doaj   +1 more source

Conversor eletrônico para dispositivos de iluminação a OLED [PDF]

, 2012
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia ElétricaEste trabalho apresenta o estudo e a implementação de um conversor eletrônico para a realização do acionamento de um ...
Tureck, Felipe
core  

Descriptor‐Guided Computational Screening of Non‐Fullerene Acceptor Cores for Organic Solar Cells

Advanced Energy Materials, EarlyView.
We screen over 4000 non‐fullerene acceptors using their ionization energy, electron affinity, quadrupole, and dipole moments to select the top‐ten candidates for a given donor polymer. The workflow recovers known high‐performance motifs and reveals how molecular components influence material properties.
Kun‐Han Lin, J. Terence Blaskovits, Wenlan Liu, Shu‐Yi Hu, Kuei‐Jhong Lin, Sandeep Sharma, Julien Gorenflot, Martin Heeney, Frédéric Laquai, Denis Andrienko   +9 more
wiley   +1 more source

Facile one-step synthesis of efficient hybridized local and charge transfer emitter for ultraviolet electroluminescence with low roll-off. [PDF]

Smart Mol
An effective hybridized local and charge‐transfer emitter D3CZ4F featuring multiple C–H⋯F locking interactions was developed, achieving an outstanding EQE of 8.97%, a small roll‐off, an emission peak at 388 nm, and color coordinates of (0.165, 0.025), respectively.
Wang S, Wang J, Xie D, Peng L, Liu Y, Wang J, Ying S, Ma D, Yan S.   +8 more
europepmc   +2 more sources

Fluorene‐Framework Engineering Enables Narrowband Red Multi‐Resonance Emitters for High‐Efficiency With Negligible Roll‐Off Toward BT.2020

Angewandte Chemie, EarlyView.
σ‐Decoupled C9 fluorene‐framework topology control enables narrowband red MR emitters. SF‐BNO and PF‐BNO share the same BNO core, but differ in closed/open fluorene ring closure. SF‐BNO improves steric shielding and stability, while PF‐BNO enhances PLQY, orientation, and efficiency. Ex‐PSF and TE‐OLED architectures deliver ultra‐low efficiency roll‐off
Aradhya Rajput, Nisha Vergineya S, Subramanian Muruganantham, Meghana Tirupati, Odugu Pavan Kumar, Jun‐Yun Kim, Mi Young Chae, Jang Hyuk Kwon   +7 more
wiley   +2 more sources

High efficient all-solution OLEDs and their transient electroluminescence [PDF]

, 2019
Solution-processed OLEDs have always been the hot topic in the research of OLEDs. The electron-hole evolution in all solution processed OLEDs involves the carrier transportation, the exciton recombination and dissociation.The dynamic of excitons plays a ...
Zheng Xu, Bo Qiao, Dandan Song, Suling Zhao   +3 more
core   +1 more source