Results 121 to 130 of about 27,237 (259)

High Mobility (>200 cm2 V−1 s−1) Transparent Top Gate IGZO TFTs with Oxidized Metal Gate Insulator for Enhanced Conductivity

Advanced Electronic Materials, EarlyView.
We demonstrate a top gate Nb capping TFT architecture that induces controlled oxygen out‐diffusion from the IGZO channel. This mechanism generates shallow donor states and enhances electron delocalization, enabling extended percolation pathways. The resulting thin‐film transistors exhibit high mobility, suppressed leakage currents, and strong optical ...
Hyeonjeong Sun, Yeoeun Yun, Kyubin Hwang, Jiyoung Bang, Seungmin Choi, Seungjae Lee, Taeyang Kim, Suhwon Choi, Eunsuk Choi, Jae Kyeong Jeong, Seung‐Beck Lee   +10 more
wiley   +1 more source

Unicolored phosphor-sensitized fluorescence for efficient and stable blue OLEDs

Nature Communications, 2018
The potential of organic light-emitting diodes (OLEDs) for solid-state lighting applications is limited by the need to develop efficient blue emitters.
Paul Heimel, Anirban Mondal, Falk May, Wolfgang Kowalsky, Christian Lennartz, Denis Andrienko, Robert Lovrincic   +6 more
doaj   +1 more source

All‐Solution‐Processed Perovskite Light‐Emitting Transistors Enabled by a Fully Organic Architecture

Advanced Electronic Materials, EarlyView.
Fully solution‐processed light‐emitting transistors based on CsPbBr3 perovskite nanocrystals (Pe‐LETs) are demonstrated using an all‐organic platform. By optimizing film formation and device integration, the Pe‐LETs achieve bright green emission with excellent color purity and a peak external quantum efficiency of 4.17 × 10−3 %, marking a step forward ...
Kelment Zahoaliaj, Alice Fappani, Francesca Pallini, Valentina Bellotti, Nicolò Quaresima, Margherita Bolognesi, Mario Prosa, Luca Beverina, Stefano Toffanin   +8 more
wiley   +1 more source

Integrated Optoelectronic Model to Predict the External Quantum Efficiency of Single‐Layer TADF Organic Light‐Emitting Diodes

Advanced Electronic Materials, EarlyView.
An experimentally validated optoelectronic device model is presented to describe the efficiency and roll‐off behavior of single‐layer TADF OLEDs. By coupling charge transport, exciton dynamics, and optical outcoupling, the model reproduces the External Quantum Efficiency (EQE) across different emission layer thicknesses and temperatures, offering ...
Jawid Nikan, Kaiwen Guo, Yungui Li, Paul W. M. Blom, Gert‐Jan A. H. Wetzelaer   +4 more
wiley   +1 more source

Improving the air stability of flexible top-emitting organic light-emitting diodes

npj Flexible Electronics
Flexible organic light-emitting diodes (OLEDs) are promising light sources for biomedical applications. However, the use of these flexible devices has been restricted by their short shelf lifetimes due to poor ambient stability.
Mina Riahi, Kou Yoshida, Ifor D. W. Samuel   +2 more
doaj   +1 more source

Wafer‐Scale Split‐Channel a‐IGZO TFTs for Hump‐Free and Stress‐Robust Operation

Advanced Electronic Materials, EarlyView.
This work identifies plasma‐induced edge region oxygen vacancies as the true origin of the hump in a‐IGZO TFTs and introduces a wafer‐scale split‐channel architecture that fully suppresses this instability. The simple mask‐level design achieves hump‐free and stress‐robust operation with significantly enhanced current drivability, offering a practical ...
So‐Jeong Park, Hyo‐In Yang, Yongwoo Lee, Hanbin Lee, Jeong Yeon Im, Dae Hwan Kim, Yoon Jung Lee, Min‐Ho Kang, Sung‐Jin Choi   +8 more
wiley   +1 more source

The Optimization of Hole Injection Layer in Organic Light-Emitting Diodes

Nanomaterials
Organic light-emitting diodes (OLEDs) are widely recognized as the forefront technology for displays and lighting technology. Now, the global OLED market is nearly mature, driven by the rising demand for superior displays in smartphones. In recent years,
Xiaolin Xing, Ziye Wu, Yingying Sun, Yunlong Liu, Xiaochen Dong, Shuhong Li, Wenjun Wang   +6 more
doaj   +1 more source

Pancake Lenses through Curved Lamination for Compact Virtual Reality

Advanced Intelligent Systems, EarlyView.
This article presents an ultrathin VR optical system based on a 1.35 in. microdisplay, leveraging curved lamination technology. Compared to mainstream solutions, the proposed design demonstrates superior compactness (volume compression by 12%) and enhanced optical performance.
Jiaping Sun, Dewen Cheng, Cheng Chi, Yuefan Shan, Da Wang, Chao Ping Chen   +5 more
wiley   +1 more source

Tellurophene-Induced Triplet-Singlet Spin-Flip Acceleration: An Advanced Design for Narrowband Organoboron Emitters with Fast Reverse Intersystem Crossing. [PDF]

Angew Chem Int Ed Engl
Linking an auxiliary dibenzo[b,d]tellurophene unit markedly accelerates exciton spin conversion in multi‐resonance‐type thermally activated delayed fluorescence emitters. Owing to the heavy‐atom effect of tellurium, the corresponding OLEDs retain remarkably high external electroluminescence quantum efficiencies exceeding 25% even at an exceptionally ...
Yang P, Lee JH, Urano K, Yasuda T.
europepmc   +3 more sources

High Efficiency and Low Roll‐Off Blue and White Organic Light‐Emitting Diodes Enabled by Pyrene‐Based Blue Emitters via Efficient Triplet–Triplet Annihilation

ChemistryEurope
Blue organic light‐emitting diodes (OLEDs) continue to face significant challenges due to the scarcity of stable and efficient blue‐emitting materials. This study presents four fluorescent blue emitters based on a pyrene core with high photoluminescence ...
Jingwen Yao, Zhi Zhou, Shou‐Cheng Dong, Dongge Ma   +3 more
doaj   +1 more source