Results 1 to 10 of about 170,837 (359)

Ultrafast graphene photodetector [PDF]

Nature Nanotechnology, 2009
The electronic properties of graphene are unique and are attracting increased attention to this novel 2-dimensional system. Its photonic properties are not less impressive. For example, this single atomic layer absorbs through direct interband transitions a considerable fraction of the light (~2.3%) over a very a broad wavelength range.
Xia, Fengnian, Mueller, Thomas, Lin, Yu-ming, Valdes-Garcia, Alberto, Avouris, Phaedon   +4 more
openaire   +4 more sources

A wide ultraviolet spectra response photodetector based on epitaxial growth of highly-oriented ε-Ga2O3 crystal on diamond substrate

Functional Diamond, 2023
In recent years, diamond has shown great potential in solar-blind ultraviolet (UV) photodetection due to its ultrawide bandgap (∼ 5.5 eV) and other superior semiconductor properties.
Qilong Yuan, Wei Wang, Wenrui Zhang, Mengting Qiu, Mingyang Yang, Zhenglin Jia, Bo Wang, Cheng-Te Lin, Kazhihito Nishimura, Keke Chang, Kuan W. A. Chee, Junfeng Cui, Nan Jiang   +12 more
doaj   +2 more sources

Ionic-electronic photodetector for vision assistance with in-sensor image processing [PDF]

Nature Communications
The human eye is highly advanced but limited by color blindness and poor adaptation to changing light. Artificial photodetectors attempt to mimic vision but often require complex processing to overcome these limitations.
Zhipeng Zhong, Yezhao Zhuang, Xin Cheng, Jingtao Zheng, Qianyi Yang, Xiang Li, Yan Chen, Hong Shen, Tie Lin, Wu Shi, Xiangjian Meng, Junhao Chu, Hai Huang, Jianlu Wang   +13 more
doaj   +2 more sources

Zero-biased graphene photodetector with high responsivity integrated into silicon microring resonator [PDF]

Scientific Reports
This study presents a dual-core graphene-based waveguide photodetector integrated into a silicon microring resonator to achieve enhanced responsivity.
Hadi Hashemnezhad, Mina Noori
doaj   +2 more sources

Metasurface Photodetectors [PDF]

Micromachines, 2021
Photodetectors are the essential building blocks of a wide range of optical systems. Typical photodetectors only convert the intensity of light electrical output signals, leaving other electromagnetic parameters, such as the frequencies, phases, and polarization states unresolved.
Jinzhao Li, Junyu Li, Shudao Zhou, Fei Yi   +3 more
openaire   +3 more sources

Enhancement of the Photoresponse in the Platinum Silicide Photodetector by a Graphene Layer [PDF]

Journal of Electrical and Computer Engineering Innovations, 2022
Background and Objectives: The use of two-dimensional materials in the photodetector fabrication has received much attention in recent years. Graphene is a two-dimensional material that has been extensively researched to make photodetectors.
A.H. Mehrfar, A. Eslami Majd
doaj   +1 more source

Chip-integrated van der Waals PN heterojunction photodetector with low dark current and high responsivity [PDF]

Light: Science & Applications, 2022
Two-dimensional materials are attractive for constructing high-performance photonic chip-integrated photodetectors because of their remarkable electronic and optical properties and dangling-bond-free surfaces.
Ruijuan Tian, Xuetao Gan, Chen Li, Xiaoqing Chen, Siqi Hu, Linpeng Gu, D. van Thourhout, A. Castellanos-Gómez, Zhipei Sun, Jianlin Zhao   +9 more
semanticscholar   +1 more source

Electrical properties of a high-precision hexagonal spiral silicon drift detector

Frontiers in Materials, 2023
With the deepening and expansion of semiconductor technology and research, in order to continuously optimize the structure and performance of semiconductor detectors, a high-precision hexagonal spiral silicon drift detector (SDD) is proposed in this ...
Xiaodan Li, Xiaodan Li, Xiaodan Li, Zheng Li, Zheng Li, Zheng Li, Jiaxiong Sun, Jiaxiong Sun, Jiaxiong Sun, Zewen Tan, Zewen Tan, Zewen Tan, Xinyi Cai, Xinyi Cai, Xinyi Cai, Xinqing Li, Xinqing Li, Manwen Liu, Hongfei Wang, Hongfei Wang, Hongfei Wang   +20 more
doaj   +1 more source

Study of electrical properties and detection mechanism of a practical novel 3D-Spherical Electrode Detector

Frontiers in Materials, 2023
Among the 3D electrode Si detectors for high energy particle and X-ray detection, the traditional 3D-Trench electrode Si detector is a semiconductor detector that is widely used and discussed.
Zewen Tan, Zewen Tan, Zewen Tan, Zheng Li, Zheng Li, Zheng Li, Xinqing Li, Xinqing Li, Xinyi Cai, Xinyi Cai, Xinyi Cai, Manwen Liu, Hongfei Wang   +12 more
doaj   +1 more source

Enhanced gain and detectivity of unipolar barrier solar blind avalanche photodetector via lattice and band engineering

Nature Communications, 2023
Ga_2O_3-based solar blind avalanche photodetectors exhibit low voltage operation, optical filter-free and monolithic integration of photodetector arrays, and therefore they are promising to be an alternative to the bulky and fragile photomultiplier tubes
Qingyi Zhang, Ning Li, Zhang Tao, Dianmeng Dong, Yongtao Yang, Yuehui Wang, Zhengang Dong, Jiaying Shen, Tianhong Zhou, Y. Liang, Weihua Tang, Zhenping Wu, Yang Zhang, J. Hao   +13 more
semanticscholar   +1 more source