Results 41 to 50 of about 17,841 (221)

Dynamic Behavior Improvement of Normally-Off p-GaN High-Electron-Mobility Transistor Through a Low-Temperature Microwave Annealing Process

IEEE Journal of the Electron Devices Society, 2019
The surface morphology optimization of ohmic contacts and the Mg out-diffusion suppression of normally off p-GaN gate high-electron-mobility transistors (HEMTs) continue to be challenges in the power electronics industry in terms of the high-frequency ...
Hsien-Chin Chiu, Chia-Hao Liu, Yi-Sheng Chang, Hsuan-Ling Kao, Rong Xuan, Chih-Wei Hu, Feng-Tso Chien   +6 more
doaj   +1 more source

Terahertz Microstrip Elevated Stack Antenna Technology on GaN-on-Low Resistivity Silicon Substrates for TMIC [PDF]

, 2016
In this paper we demonstrate a THz microstrip stack antenna on GaN-on-low resistivity silicon substrates (ρ < 40 Ω.cm). To reduce losses caused by the substrate and to enhance performance of the integrated antenna at THz frequencies, the driven patch ...
Benakaprasad, B., Eblabla, A., Elgaid, K., Guiney, I., Humphreys, C., Li, X., Thayne, I., Wallis, D.J.   +7 more
core   +1 more source

Optoelectronically Active GaAs/GeSn‐MQW/Ge Heterojunctions Created via Semiconductor Grafting

Advanced Optical Materials, EarlyView.
Semiconductor Grafting enables a lattice‐mismatched GaAs/GeSn‐MQW/Ge heterojunction with engineered band offsets and optical field distribution. The enlarged conduction and valence band discontinuities govern asymmetric carrier transport, producing bias‐dependent dual‐mode photodetection from visible to near‐infrared wavelengths.
Jie Zhou, Haibo Wang, Yang Liu, Yifu Guo, Alireza Abrand, Yiran Li, Jiarui Gong, Hieu D. Trinh, Po Rei Huang, Jianping Shen, Shengqiang Xu, Daniel Vincent, Samuel Haessly, Yi Lu, Munho Kim, Shui‐Qing Yu, Parsian K. Mohseni, Guo‐En Chang, Zetian Mi, Kai Sun, Xiao Gong, Mikhail A. Kats, Zhenqiang Ma   +22 more
wiley   +1 more source

High-Performance AlGaN Double Channel HEMTs with Improved Drain Current Density and High Breakdown Voltage

Nanoscale Research Letters, 2020
In this work, AlGaN double channel heterostructure is proposed and grown by metal organic chemical vapor deposition (MOCVD), and high-performance AlGaN double channel high electron mobility transistors (HEMTs) are fabricated and investigated.
Yachao Zhang, Yifan Li, Jia Wang, Yiming Shen, Lin Du, Yao Li, Zhizhe Wang, Shengrui Xu, Jincheng Zhang, Yue Hao   +9 more
doaj   +1 more source

A sub-critical barrier thickness normally-off AlGaN/GaN MOS-HEMT [PDF]

, 2014
A new high-performance normally-off gallium nitride (GaN)-based metal-oxide-semiconductor high electron mobility transistor that employs an ultrathin subcritical 3 nm thick aluminium gallium nitride (Al0.25Ga0.75N) barrier layer and relies on an induced ...
Al-Khalidi, Abdullah, Brown, Raphael, Li, Xu, Macfarlane, Douglas, Ternent, Gary, Thayne, Iain, Wasige, Edward, Zhou, Haiping   +7 more
core   +1 more source

Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems

Advanced Electronic Materials, EarlyView.
Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang, Weipeng Wang, Xuan Cong, Shiyu Wang, Gao Li, Sen Gong, Lin Huang, Hongxin Zeng, Yaxin Zhang, Ziqiang Yang   +9 more
wiley   +1 more source

Care‐Based Disruption, Creative Practice and Collaborative Empathetic Histories

History, EarlyView.
Abstract This Forum essay examines the value of collaboration when creatively engaging with history as a means of developing empathy, care, and understanding. Creative and collaborative histories provide space to address the harmful misconceptions and preconceptions entangled in capitalist and colonial narratives.
SIERRA MCKINNEY, KATHERINE COOK
wiley   +1 more source

Demonstration of GaN‐Based HEMTs Using Extremely Thin h‐BN Passivation Layer and Air Spacer for the RF Performance Improvement

Advanced Electronic Materials
GaN‐based high electron mobility transistors (HEMTs) is demonstrated using an extremely thin (≈ 5 nm) h‐BN passivation layer and air spacer, for the first time.
Sung‐Jae Chang, Seokho Moon, Junhyung Jeong, Hyun‐Wook Jung, Jawon Kim, Semi Im, Jaesub Song, Changuk Ji, Seonghyeon Pak, Il‐Gyu Choi, Youn‐Sub Noh, Seong‐Il Kim, Sang‐Heung Lee, Ho‐Kyun Ahn, Dong‐Min Kang, Jong Kyu Kim, Jong‐Won Lim   +16 more
doaj   +1 more source

Investigating the Failure Mechanism of p-GaN Gate HEMTs under High Power Stress with a Transparent ITO Gate

Micromachines, 2023
The channel temperature distribution and breakdown points are difficult to monitor for the traditional p-GaN gate HEMTs under high power stress, because the metal gate blocks the light.
Zhanfei Han, Xiangdong Li, Hongyue Wang, Jiahui Yuan, Junbo Wang, Meng Wang, Weitao Yang, Shuzhen You, Jingjing Chang, Jincheng Zhang, Yue Hao   +10 more
doaj   +1 more source

Density-Dependent Electron Transport and Precise Modeling of GaN HEMTs

, 2015
We report on the direct measurement of two-dimensional sheet charge density dependence of electron transport in AlGaN/GaN high electron mobility transistors.
Akyol, Fatih, Bajaj, Sanyam, Chumbes, Eduardo M., Hung, Ting-Hsiang, Khurgin, Jacob, Krishnamoorthy, Sriram, Park, Pil Sung, Rajan, Siddharth, Reza, Shahed, Shoron, Omor F.   +9 more
core   +1 more source