Results 31 to 40 of about 43,621 (161)

Flexible organic light-emitting diodes for antimicrobial photodynamic therapy

npj Flexible Electronics, 2019
OLED is ready for photodynamic therapy Flexible OLED technology is becoming increasingly mature and is ready to open new directions in antimicrobial photodynamic therapy.
Cheng Lian, Marta Piksa, Kou Yoshida, Saydulla Persheyev, Krzysztof J. Pawlik, Katarzyna Matczyszyn, Ifor D. W. Samuel   +6 more
doaj   +1 more source

Hot-Carriers’ Effect on the Performance of Organic Schottky Diodes

IEEE Access, 2020
Because thermionic emission or tunneling occurs when carriers overcome or tunneling through the barrier for any Schottky diode, hot carriers caused by the applied electric field can enhance carrier thermionic emission or carrier tunneling.
Ling-Feng Mao
doaj   +1 more source

Simultaneous Multi‐Resonant Thermally Activated Delayed Fluorescence and Room Temperature Phosphorescence from Biluminescent Nitrogen‐Containing Indolocarbazoles

Advanced Science
Organic biluminescence, the simultaneous emission from both the singlet and triplet excited state manifolds, is a rare and incompletely understood emission process.
Oliver S. Lee, Aidan P. McKay, David B. Cordes, Stuart L. Warriner, Malte C. Gather, Eli Zysman‐Colman   +5 more
doaj   +1 more source

Fabrication of Nanostructures on Surface of Micro-Lens Arrays Using Reactive Ion Etching

Micromachines
In this study, we fabricated a nanostructure on the surface of the micro-lens array (MLA), which is one of the light extraction technologies of organic light-emitting diodes (OLEDs), by performing the Reactive Ion -Etching (RIE) process. The MLA consists
Tae Jeong Hwang, Eun Jeong Bae, Geun-Su Choi, Young Wook Park   +3 more
doaj   +1 more source

Synthesis of Conjugated Tris- and Tetrakis (Carbazolyl) Azulenes with Intense Emission in the Visible Range

Molecules
New conjugated carbazolyl-substituted azulenes, such as 1,2,3-tris(carbazolyl)azulene and 1,2,3,6-tetrakis(carbazolyl)azulene, were synthesized via cross-coupling reactions in high yields.
Amantay Iskanderov, Nurlan Merkhatuly, Ablaykhan Iskanderov, Saltanat Abeuova, Pavel Vojtisek   +4 more
doaj   +1 more source

Improving organic photovoltaic cells by forcing electrode work function well beyond onset of Ohmic transition

Nature Communications, 2021
Both open-circuit voltage and fill factor of organic solar cells are affected by the metal-organic semiconductor interface. Here, the authors demonstrate that the voltage can continue to rise when the Fermi level is forced up to the semiconductor density-
Chao Zhao, Cindy G. Tang, Zong-Long Seah, Qi-Mian Koh, Lay-Lay Chua, Rui-Qi Png, Peter K. H. Ho   +6 more
doaj   +1 more source

Thiophene-Based Organic Semiconductors

Topics in Current Chemistry, 2017
Thiophene-based π-conjugated organic small molecules and polymers are the research subject of significant current interest owing to their potential use as organic semiconductors in material chemistry. Despite simple and similar molecular structures, the hitherto reported properties of thiophene-based organic semiconductors are rather diverse. Design of
Gulsen Turkoglu, M. Emin Cinar, Turan Ozturk   +2 more
openaire   +3 more sources

Comparison of the Performance of Fluorescent, Phosphorescent, and TADF Luminophores for Explosives Sensing

Advanced Sensor Research
This study investigates how the emission mechanism (fluorescence, phosphorescence, or thermally activated delayed fluorescence, TADF) of a luminescence‐quenching chemical sensor influences the sensitivity of explosives detection.
Michele Duarte Tonet, Graham A. Turnbull, Eli Zysman‐Colman   +2 more
doaj   +1 more source

Rapid and high-resolution patterning of microstructure and composition in organic semiconductors using ‘molecular gates’

Nature Communications, 2020
Although high‐resolution methods such as photolithography allow for organic semiconductor patterning, they are often limited by their high complexity.
Aleksandr Perevedentsev, Mariano Campoy-Quiles   +1 more
doaj   +1 more source

Green phosphorescent organic light-emitting diode exhibiting highest external quantum efficiency with ultra-thin undoped emission layer

Scientific Reports, 2021
In this study, we report highly efficient green phosphorescent organic light-emitting diodes (OLEDs) with ultra-thin emission layers (EMLs). We use tris[2-phenylpyridinato-C2,N]iridium(III) (Ir(ppy)3), a green phosphorescent dopant, for creating the ...
Shin Woo Kang, Dong-Hyun Baek, Byeong-Kwon Ju, Young Wook Park   +3 more
doaj   +1 more source