Results 81 to 90 of about 93,816 (297)

Growth and Magnetism of Mn_xGe_1−x Heteroepitaxial Quantum Dots Grown on Si Wafer by Molecular Beam Epitaxy

Crystals, 2020
Self-assembled MnGe quantum dots (QDs) were grown on Si (001) substrates using molecular beam epitaxy with different growth temperatures and Ge deposition thicknesses to explore the interaction among Mn doping, Ge deposition, the formation of ...
Maolong Yang, Liming Wang, Jie You, Lingyao Meng, Yichi Zhang, Bo Wang, Bin Wang, Huiyong Hu   +7 more
doaj   +1 more source

Meniscus Pixel Printing for Contact‐Lens Vision Sensing and Robotic Control

Advanced Functional Materials, EarlyView.
A visual‐sensing contact lens is enabled by meniscus pixel printing (MPP), which rapidly patterns a 200 µm perovskite photodetector pixel in 1 s without masks, vacuum processing, or bulky equipment. A deep‐learning‐based super‐resolution reconstructs sparse on‐lens signals into 80 × 80 high‐resolution visual information, while AI‐driven eye‐tracking ...
Byung‐Hoon Gong, Dohyean Kim, Jiyun Jeong, Taekyeong Kim, Soon‐sung Kwon, Junyoung Seo, Il Jeon, Im Doo Jung   +7 more
wiley   +1 more source

High-performance infrared Ge-based plasmonic photodetector enhanced by dual absorption mechanism

APL Photonics, 2020
A sub-wavelength plasmonic Au–Ge grating was used to enhance the responsivity of Ge-based metal–semiconductor–metal photodetectors at infrared communication wavelengths.
Liming Wang, Yichi Zhang, Bo Wang, Ying Wei, Bei Zhang, Lingyao Meng, Tao Liu, Bin Wang, Benguang Han, Zuimin Jiang, Huiyong Hu   +10 more
doaj   +1 more source

Halide‐Dependent Photoluminescence and Heavy‐Atom Effects in Low‐Melting Organic–Inorganic Manganese Halides

Advanced Functional Materials, EarlyView.
Two pyridinium‐based ionic liquid templated hybrid manganese halides, (C4Py)2[MnCl4] and (C4Py)2[MnBr4], display similar bulk structures but show significantly different photoluminescence behaviors due to the bromine heavy‐atom effect. Their stable local Mn environments remain intact even in the molten state, allowing applications such as luminescence ...
Biswajit Bhattacharyya, Christian Balischewski, Jiyong Kim, Tiago Duarte, Lianshe Fu, Rute A.S. Ferreira, Alkit Beqiraj, Iuliia Mikulska, Diego Gianolio, Eric Sperlich, Felix Stete, Wouter Koopman, Christina Günter, Katlen Brennenstuhl, Daniel Van Opdenbosch, Cordt Zollfrank, Armin Wedel, Beth J. Murray, Małgorzata Swadźba‐Kwaśny, Tillmann Klamroth, Michael U. Kumke, Verónica de Zea Bermudez, Andreas Taubert   +22 more
wiley   +1 more source

Photoluminescence from nanocrystalline graphite monofluoride

, 2010
We synthesize and study the structural and optical properties of nanocrystalline graphene monofluoride and graphite monofluoride, which are carbon-based wide bandgap materials.
Crespi, Vincent H., Gutierrez, Humberto R., Hao, Qingzhen, Okino, Fujio, Sofo, Jorge O., Sparks, Justin R., Tang, Youjian, Wang, Bei, Zhu, Jun   +8 more
core   +1 more source

Buried Interface Regulation with TbCl3 for Highly-Efficient All-Inorganic Perovskite/Silicon Tandem Solar Cells

Nano-Micro Letters
Highlights The lanthanide compound of TbCl3 improved the wettability of Me-4PACz and further enhanced crystallization, in which the additional Cl− ions passivate iodine vacancy and improve energy level alignment at buried interface.
Wenming Chai, Weidong Zhu, He Xi, Dazheng Chen, Hang Dong, Long Zhou, Hailong You, Jincheng Zhang, Chunfu Zhang, Chunxiang Zhu, Yue Hao   +10 more
doaj   +1 more source

In‐Situ Solution Complexation for n‐Type Surface‐Energetics Reconstruction in 2.0 eV Ultra‐Wide‐Bandgap Perovskite Solar Cells

Advanced Functional Materials, EarlyView.
A reactive in situ solution complexation strategy reconstructs the surface of 2.0 eV ultra‐wide‐bandgap perovskites via proton transfer. This chemical modulation eliminates metallic defects and induces a degenerate‐like n‐type surface, establishing an Ohmic tunneling contact.
Saemon Yoon, Han‐Gyun Lim, Jinyoung Kim, Gyu Min Kim, Seojun Lee, Jun Ryu, SungWon Cho, Jincheol Kim, Hyosung Choi, Jung Sang Cho, Jongsung Park, Dong‐Won Kang   +11 more
wiley   +1 more source

Establishing a Model Precursor System: Over a Decade of Research on Carbon Dots from the Citric Acid‐Urea System

Advanced Functional Materials, EarlyView.
The citric acid/urea (CA‐Urea) precursor system offers a versatile, scalable route to carbon dots with tunable luminescence and multifunctionality. Mechanistic insights into precursor chemistry and reaction parameters have enabled doping, surface modification, and hybridization strategies, yielding CDs for luminescent devices, sensing, catalysis ...
Yupeng Liu, Zhiqi Cai, Xiangxin Sun, Hanyi Zhang, Yiming Hao, Jun Wu, Zekun Yan, Xue Wu, Yiqi Liang, Liming Wang, Songnan Qu   +10 more
wiley   +1 more source

Reflection-Free One-Way Edge Modes in a Gyromagnetic Photonic Crystal

, 2008
We point out that electromagnetic one-way edge modes analogous to quantum Hall edge states, originally predicted by Raghu and Haldane in 2D gyroelectric photonic crystals possessing Dirac point-derived bandgaps, can appear in more general settings.
D. M. Pozar, E. P. Wohlfarth, J. D. Joannopoulos, John D. Joannopoulos, Marin Soljačić, Y. D. Chong, Zheng Wang   +6 more
core   +1 more source

Photonic transformer chip: interference is all you need

PhotoniX
As the core component of the transformer model, the attention has been proved as all you need in artificial intelligence field in recent years. However, conventional electronic processors are unable to cope with the exponentially increasing hardware ...
Ye Tian, Shuiying Xiang, Xingxing Guo, Yahui Zhang, Jiashang Xu, Shangxuan Shi, Haowen Zhao, Yizhi Wang, Xinran Niu, Wenzhuo Liu, Yue Hao   +10 more
doaj   +1 more source