Results 61 to 70 of about 5,123,134 (289)

Controlling triplet–triplet upconversion and singlet-triplet annihilation in organic light-emitting diodes for injection lasing

Communications Materials, 2022
Losses induced by triplet excitons are a major obstacle for electrically pumped organic lasers. Here, a combination of enhanced triplet-triplet upconversion and suppressed singlet-triplet annihilation is demonstrated as a route towards lasing in organic ...
Atul Shukla, Monirul Hasan, Gangadhar Banappanavar, Viqar Ahmad, Jan Sobus, Evan G. Moore, Dinesh Kabra, Shih-Chun Lo, Ebinazar B. Namdas   +8 more
doaj   +1 more source

Polymer Side‐Chain Electronic Effects Regulating Solvation Sheath for Low‐Temperature and High‐Voltage Lithium Metal Batteries

Advanced Functional Materials, EarlyView.
This work reveals the influence of polymer side‐chain electronic effects on the Li+ solvation sheath in gel polymer electrolytes. Electron‐donating side chains induce the strong Li+ coordination and FDMA‐dominated solvation, impeding Li+ desolvation, whereas electron‐withdrawing side chains weaken Li+ coordination, facilitating anion‐rich solvation and
Xianbin Wu, Zhenxiang Zhu, Haotian Yang, Dayao Zhang, Zhen Geng, Cunman Zhang, Mingzhe Xue, Jian Wang   +7 more
wiley   +1 more source

Enhancing the photoluminescence quantum yields of blue-emitting cationic iridium(III) complexes bearing bisphosphine ligands [PDF]

, 2016
EZ-C acknowledges the University of St Andrews for financial support. We thank Johnson Matthey and Umicore AG for the gift of materials and Cihang Yu for the preparation of isopropxantphos. We thank Dr. Nail Shaveleev for the synthesis of NMS25. IDWS and
Henwood, Adam Francis, Slawin, Alexandra Martha Zoya, Di Mascio, Vincent, Kamer, Paul C J, Samuel, Ifor David William, Bansal, Ashu Kumar, Martínez-Sarti, Laura, Pertegás, Antonio, Bolink, Henk J., Zysman-Colman, Eli, Cordes, David Bradford, Rota Martir, Diego   +11 more
core   +1 more source

Imidazole derivatives for efficient organic light-emitting diodes

Journal of Information Display, 2020
Since the first development of organic light-emitting diodes (OLEDs) in 1987, imidazole derivatives, mainly including phenanthroimidazole (PI) and benzimidazole (BI), have increasingly attracted attention.
Shaofeng Ye, Shaoqing Zhuang, Biao Pan, Runda Guo, Lei Wang   +4 more
doaj   +1 more source

High‐Performance, Air‐Stable and Eco‐Friendly Terpene‐Processed Organic Solar Cells via Solvent‐Composition‐Controlled Film Formation Kinetics

Advanced Functional Materials, EarlyView.
Solvent‐composition‐controlled film formation enables high‐performance (efficiency = 18.66%) and air‐stable terpene‐processed organic solar cells. An optimized eucalyptol/tetralin ratio of 50:50 (v/v) balances molecular solvation and aggregation kinetics, producing favorable nanoscale phase separation and vertical composition gradients.
Hyerin Jeon, Seungho Lee, Jinseck Kim, Jin‐Woo Lee, Bumjoon J. Kim   +4 more
wiley   +1 more source

Absorbance based light emitting diode optical sensors and sensing devices [PDF]

, 2008
The ever increasing demand for in situ monitoring of health, environment and security has created a need for reliable, miniaturised sensing devices. To achieve this, appropriate analytical devices are required that possess operating characteristics of ...
O'Toole, Martina, Dermot Diamond, O\u27Toole, Martina, Martina O’Toole, Diamond, Dermot, Martina O’Toole   +5 more
core   +2 more sources

Ligand Assisted Epitaxial Growth of CsPbBr3 Microcrystal Resonators With Record ‐Low Lasing Thresholds

Advanced Functional Materials, EarlyView.
Solution‐based ligand‐assisted epitaxial growth (LAEG) yields high‐quality CsPbBr3 microcrystals on different substrates with superior morphology, passivated surfaces, and high photoluminescence quantum yield. These robust micro‐resonators achieve record‐low room‐temperature lasing thresholds of 7.2 kW·cm−2 and maintain operational stability up to 90 ...
Shuyu Zhou, Viktor Rehm, Zijian Peng, Tomáš Hrbek, Anastasia Barabash, Christoph J. Brabec, Berke Özyalin, Yufei Han, Johannes Böhmer, Johannes Will, Erdmann Spiecker, Klaus Götz, Tobias Unruh, Jędrzej Korczak, Tomasz Story, Felix Hilpert, Olaf Brummel, Jörg Libuda, Iva Matolínová, Wolfgang Heiss   +19 more
wiley   +1 more source

Origin of Enhanced Efficiency and Reduced Roll-Off in Organic Light-Emitting Diodes Based on Pt(II) Complexes. [PDF]

Adv Sci (Weinh)
Controlled Pt–Pt fine structure in square‐planar Pt(II) complexes governs metal–metal‐to‐ligand charge‐transfer (MMLCT) state formation, exciton dynamics, and organic light‐emitting diode performance. Short Pt–Pt contacts in Pt(fppz)2 enable coherent metal–metal coupling, sub‐microsecond emission and an external quantum efficiency of 29%, whereas ...
Shukla A, McGregor SKM, Steele JA, Gale IK, Miyata K, Hassan M, McDonald C, Lepage RJ, Solano E, Ramya PK, Suresh CH, Ehara T, Adachi C, Onda K, Lo SC, Namdas EB.   +15 more
europepmc   +2 more sources

Near‐Infrared Light‐Activated Polydopamine Nanoparticles Conjugated With Transferrin Peptides for Enhanced Brain Accumulation

Advanced Healthcare Materials, EarlyView.
This study demonstrates that Tf‐PDA NPs combine a receptor‐mediated targeting with mild photothermal activation to enhance nanoparticle accumulation in the brain. NIR‐activated Tf‐PDA NPs increase BBB permeability to NPs in vitro and in vivo without inducing cytotoxicity or adverse immune responses.
Rafaela Ferrão, Susana Simões, Paulo Rodrigues‐Santos, Vitor Francisco, Akhilesh Rai, Lino Ferreira   +5 more
wiley   +1 more source

Bioinspired Adaptive Sensors: A Review on Current Developments in Theory and Application

Advanced Materials, EarlyView.
This review comprehensively summarizes the recent progress in the design and fabrication of sensory‐adaptation‐inspired devices and highlights their valuable applications in electronic skin, wearable electronics, and machine vision. The existing challenges and future directions are addressed in aspects such as device performance optimization ...
Guodong Gong, You Zhou, Qingxiu Li, Wenyu Zhao, Sunyingyue Geng, Hangfei Li, Yan‐Bing Leng, Shirui Zhu, Guanglong Ding, Yongbiao Zhai, Ziyu Lv, Ye Zhou, Su‐Ting Han   +12 more
wiley   +1 more source