Results 81 to 90 of about 70,821 (371)

Role of the Recombination Zone in Organic Light‐Emitting Devices

Advanced Materials, EarlyView.
This review summarizes the critical role of the recombination zone in organic light‐emitting diodes (OLEDs). We highlight that broadening the recombination zone in OLEDs based on emissive layers with balanced charge transport and high photoluminescence quantum yields provides a promising route toward achieving both long operational lifetime and high ...
Yungui Li, Karl Leo
wiley   +1 more source

SPECTRUM AND KINETICS OF DIBROMDIBENZOTIOFEN PHOSPHORESCENCE IN N-HEXANES AT 77 K

Наука. Инновации. Технологии, 2022
Spectrum and kinetics of dibromdibenzotiofen phosphorescence in n- hexanes at 77 K have been studied. It has been shown that the visible multiplet structure of phosphorescence spectrum is determined of the superposition of spectra emitted by different ...
Natal’ya Vladimirovna Zhdanova, Mihail Ivanovich Deryabin   +1 more
doaj  

Effects of Neutron Irradiations in Various Crystal Samples of Large Size for Future Crystal Calorimeter [PDF]

, 2010
In this paper, we report an investigation on the radiation damage effects induced by neutrons in large size crystal scintillator: BGO, CeF_3, LYSO:Ce and PWO. The irradiations were carried out by using fast neutrons from one ^(241)Am-Be and two ^(252)
Mao, Rihua, Zhang, Liyuan, Zhu, Ren-Yuan
core   +1 more source

High‐Performance Flexible Near‐Infrared Organic Light‐Emitting Diodes with a Heterogeneous Alloy Semitransparent Electrode

Advanced Materials, EarlyView.
This study presents a micro‐structured magnesium‐bismuth alloy electrode that enhances flexible NIR OLEDs. The electrode provides 40% broadband transmittance (400–1600 nm) and boosts light outcoupling efficiency (42.3%) and photoluminescence quantum yield (71.8%) through the Purcell effect in optical microcavities.
Mengxin Xu, Meina Han, Minying Xue, Shihao Liu, Yi Li, Gaoqiang Deng, Letian Zhang, Yuantao Zhang, Gang Cheng, Wenfa Xie, Chi‐Ming Che   +10 more
wiley   +1 more source

Guest‐Induced Activation of Multicolor Photoluminescence in Naphthalene Bisimide Liquid Crystals

Advanced Materials, EarlyView.
Supramolecular host–guest design in naphthalene bisimide liquid crystals activates charge‐transfer emission and enables continuous tuning of color (511–685 nm) and lifetime, spanning prompt fluorescence, TADF, and RTP. Electron‐rich guests and Pt(II) complexes modulate emissive states, while co‐assembled NBI complexes create an energy‐transfer cascade ...
Johannes Nowarra, Swadhin Garain, Matthias Stolte, Frank Würthner   +3 more
wiley   +1 more source

Ratiometric hypoxia detection by bright organic room temperature phosphorescence of uniformed silica nanoparticles in water

Aggregate, 2023
Organic room temperature phosphorescence (RTP) in water has attracted much attention recently for its potential biological applications. However, it remains a formidable challenge to achieve efficient RTP from pure organic compounds in aqueous phase due ...
Tong He, Wu‐Jie Guo, Yu‐Zhe Chen, Xiao‐Feng Yang, Chen‐Ho Tung, Li‐Zhu Wu   +5 more
doaj   +1 more source

Boosting the efficiency of organic persistent room-temperature phosphorescence by intramolecular triplet-triplet energy transfer

Nature Communications, 2019
The potential of organic materials with persistent room-temperature phosphorescence for high-tech application is limited by their low efficiency. Here, the authors report a strategy to enhance persistent room-temperature phosphorescence efficiency via ...
Weijun Zhao, Tsz Shing Cheung, Nan Jiang, Wenbin Huang, Jacky W. Y. Lam, Xuepeng Zhang, Zikai He, Ben Zhong Tang   +7 more
doaj   +1 more source

Transparent Perovskite Light‐Emitting Diodes with Conductive Oxide Top Electrodes

Advanced Materials, EarlyView.
Transparent perovskite light‐emitting diodes (TrPeLEDs) enable simultaneous display and transparency, expanding application possibilities. Using a metal oxide buffer layer and pulsed laser deposition, TrPeLEDs with diverse compositions and architectures are demonstrated.
Michele Forzatti, Sergio Martínez‐Saiz, Morena Cervino, Edoardo Stanzani, Sandra Jenatsch, Qingsen Zeng, Joo Sung Kim, Dong‐Hyeok Kim, Eojin Yoon, Tae‐Woo Lee, Daniel Tordera, Henk J. Bolink   +11 more
wiley   +1 more source

Elucidating the Mechanism behind the Enhancement of Persistent Luminescence in ZnGa2O4: Cr3+ Nanoparticles upon H2O2 Exposure

Advanced Optical Materials, EarlyView.
ABSTRACT Persistent luminescence (PersL) materials exhibit prolonged emission of light, lasting from seconds to hours after stopping the excitation. At the nanoscale, they have attracted considerable interest for applications in in vivo imaging, photodynamic therapy, and biosensing.
Celina Matuszewska, Izabel Mazon Anselmo, Mathilde Chaboud, Dimitri Mercier, Zied Ferjaoui, Cyrille Richard, Bruno Viana, Corinne Chaneac   +7 more
wiley   +1 more source

Bay‐functionalized [7]Helicene Bilayer Nanographenes

Advanced Optical Materials, EarlyView.
Bay‐functionalized [7]helical bilayer nanographenes are synthesized via a scalable, modular strategy enabling late‐stage diversification. Tailored methoxy, diketone, and phenazine substitutions precisely tune redox, photophysical, and chiroptical properties, delivering strong electronic circular dichroism and bright circularly polarized luminescence ...
Anmol Thanai, Vikas Sharma, Louis Minion, Hassan Khan, Hadeel Abbas, George F. S. Whitehead, Avantika Hasija, Jessica Wade, Matthew John Fuchter, Ashok Keerthi   +9 more
wiley   +1 more source