Results 91 to 100 of about 4,322 (253)

Three-Dimensional High-Resolution Laser Lithography of CsPbBr₃ Quantum Dots in Photoresist with Sub-100 nm Feature Size

Nanomaterials
Perovskite quantum dots (PQDs), with their excellent optical properties, have become a leading semiconductor material in the field of optoelectronics. However, to date, it has been a challenge to achieve the three-dimensional high-resolution patterning ...
Boyuan Cai, Haoran Jiang, Run Bai, Shengting Zhu, Yinan Zhang, Haoyi Yu, Min Gu, Qiming Zhang   +7 more
doaj   +1 more source

Defect‐Functionalization‐Mediated Tunneling Drives Nonlinear Photoemission in Perovskites

Advanced Science, EarlyView.
This cover illustration depicts CsPbBr3 perovskite nanocrystals embedded with functionalized defect vacancies, where electrons migrate through defect‐mediated pathways and emit as lightning‐like beams. The imagery visualizes the core discovery of our work—defect‐functionalization‐mediated tunneling enabling nonlinear photoemission, where deep‐level ...
Hang Ren, Xi Zhang, Yicheng Wang, Shuai Wang, Zhi Wang, Yumeng Li, Jikai Yang, Xin Wang, Weijun Chen, Yining Mu   +9 more
wiley   +1 more source

Lattice-matched molecular-anchor design for high-performance perovskite quantum dot light-emitting diodes

Nature Communications
Perovskite quantum dot light-emitting diodes have rapidly achieved high external quantum efficiencies of over 25%; however, hindered by limited operating stability originating from surface defects or ion migration in quantum dots.
Jiawei Chen, Xiangyu Liu, Bo Cai, Yuanzhuang Cheng, Hao Wen, Danlei Zhu, Yaonan Xiong, Linjie Dai, Xinghua Yan, Baixu Xiang, Xiyu Luo, Wenjing Feng, Jiuyao Du, Shuyue Dong, Qingsong Shan, Shulin Chen, Haibo Zeng, Qihua Xiong, Lian Duan, Dongxin Ma   +19 more
doaj   +1 more source

Graphene quantum dots hybrids in energy storage/conversion Systems—State-of-the-art and advances

Hybrid Advances
Graphene quantum dots are tiny (sizes of few nm) zero dimensional crystalline nanoentities, inheriting noteworthy optical/electronic, fluorescence, magnetic, quantum confinements, and surface/edge properties for scorching nanotechnology areas ranging ...
Ayesha Kausar
doaj   +1 more source

Perovskite Quantum Dots In Liquid Scintillator

, 2018
Quantum dots are semiconducting crystals with dimensions on the order of nanometers. Due to quantum confinement, their size gives rise to optical properties that resemble those of single atoms, rather than bulk material. One of these is their absorption of light shorter than a characteristic wavelength and reemission in a narrow peak around that ...
openaire   +2 more sources

Structural and Compositional Effects on the Scintillation Properties of Fast Emitting Metal‐Organic Frameworks

Advanced Science, EarlyView.
The crystalline structure, the atomic numbers of the constituent elementsand the size of MOF crystals each influence their photoluminescence and scintillation properties in distinct ways. Together, these factors provide valuable guidelines for designing systems with optimized performance and tunable timing characteristics, arising from the synergistic ...
Francesca Cova, Jacopo Perego, Biplab Joarder, Nobuhiro Yanai, Anna Vedda, Silvia Bracco, Angiolina Comotti, Angelo Monguzzi, Irene Villa   +8 more
wiley   +1 more source

Self-Assembled Hybrid Halide Perovskite Quantum Wire Bundle/Dot for Multiband Applications

Nanomaterials
In this study, self-assembled halide perovskite quantum wire bundles (QWBs)/quantum dots (QDs) are fabricated using a room temperature-based formation method.
Hee Chang Jeon, Seonghwan Kim, Young-Seong Kim   +2 more
doaj   +1 more source

WS2 Optoelectronic Memristive Reservoir Enabling Ultra‐Low‐Power, Multi‐Task, and Environmentally Stable Neuromorphic Computing

Advanced Science, EarlyView.
WS2‐based in‐memory sensing reservoir computing integrates sensing, memory, and computation in one compact device. It achieves ∼94% N‐MNIST, ∼93% eye motion perception, and ∼89% speech recognition with ultra‐low energy (∼25.5 fJ/spike). The system shows stability at 95% humidity, endurance over 1.5M cycles, and supports synaptic plasticity, enabling ...
Dayanand Kumar, Hanrui Li, Divyanshu Divyanshu, Dhananjay D. Kumbhar, Manoj Kumar Rajbhar, Amit Singh, Abdul Momin Syed, Selma Amara, Gianluca Setti, Nazek El‐Atab   +9 more
wiley   +1 more source

Decoupling Intrinsic Molecular Efficacy From Platform Effects: An Interpretable Machine Learning Framework for Unbiased Perovskite Passivator Discovery

Advanced Science, EarlyView.
This study establishes an interpretable machine learning framework that disentangles the intrinsic molecular efficacy of passivators from experimental platform effects—enabling unbiased, high‐throughput discovery of effective perovskite surface modifiers.
Jing Zhang, Ziyuan Li, Shan Gao, Zhen Zhu, Jing Wang, Xiangmei Duan   +5 more
wiley   +1 more source

Epitaxial Bi2O2Se/Bi2O5Se Thin Films: Revealing Electric‐Field‐Driven Oxidation and Resistive Switching Dynamics for Advanced Memory Devices

Advanced Science, EarlyView.
Bi2O2Se/Bi2O5Se bilayer heterostructure exhibits reversible structural evolution during device operation, directly revealed by atomic‐scale investigation. Oxygen vacancy redistribution governs filament formation and rupture, enabling stable multilevel resistive switching and synaptic‐like behaviors.
Yen‐Jung Chen, Yong‐Jyun Wang, Zi‐Qin Hong, Chien‐Hua Wang, Yi‐Ning Wang, Jia De Cheng, Chun‐Wei Huang, Ying‐Hao Chu, Wen‐Wei Wu   +8 more
wiley   +1 more source