Results 221 to 230 of about 12,931 (263)

Organic heterojunction phototransistor

Journal of Applied Physics, 2002
We propose an organic heterojunction phototransistor stacked with organic layers of electron and hole transport materials. The materials used in this study are perylene derivative (td-PTC) as the ultrathin base layer and triphenylamine derivative (TPD) as the emitter and collector layers.
Takehiro Zukawa, Shigeki Naka, Hiroyuki Okada, Hiroyoshi Onnagawa   +3 more
openaire   +1 more source

Organic Light Detectors: Photodiodes and Phototransistors

Advanced Materials, 2013
AbstractWhile organic electronics is mostly dominated by light‐emitting diodes, photovoltaic cells and transistors, optoelectronics properties peculiar to organic semiconductors make them interesting candidates for the development of innovative and disruptive applications also in the field of light signal detection.
K. Baeg, M. Binda, NATALI, DARIO ANDREA NICOLA, M. Caironi, Y. Noh   +4 more
openaire   +3 more sources

Multiposition Controllable Gate WS2/MoS2 Heterojunction Phototransistor and Its Applications in Optoelectronic Logic Operation and Emulation of Neurotransmission

Advanced Optical Materials, 2022
Better control of the channel is crucial to improve the performance of existing electron devices. A phototransistor with a specifically designed dual‐gate structure based on a vertical van der Waals heterojunction of WS2 and MoS2 is proposed.
Yichi Zhang, Liming Wang, Maolong Yang, Dongdong Lin, Bo Wang, Ningning Zhang, Zuimin Jiang, Maliang Liu, Zhangming Zhu, Huiyong Hu   +9 more
semanticscholar   +1 more source

Punchthrough phototransistors

2014
In this thesis, two kinds of punch-through phototransistors were studied. GaAs-AlGaAs heterojunction punch-through phototransistors (HPTPTs) were realized by employing Molecular Beam Epitaxy (MBE) growth and standard wet etching processing technology. Dark I-V characteristics were experimentally studied.
openaire   +2 more sources

Phototransistor noise model based on noise measurements on PNP PIN phototransistors

Optical and Quantum Electronics, 2014
A noise model for phototransistors in open base configuration is presented. The model was developed from the noise measurements on four different phototransistor designs. The extracted current gains from the noise model were verified by measured current gains from Gummel measurements.
Wolfgang Gaberl, Plamen Kostov, Michael Hofbauer, Horst Zimmermann   +3 more
openaire   +1 more source

Ultrahigh Deep-Ultraviolet Responsivity of a β-Ga2O3/MgO Heterostructure-Based Phototransistor

, 2021
Deep-ultraviolet (DUV) photodetectors based on wide-band-gap semiconductors have attracted significant interest across a wide range of applications in the industrial, biological, environmental, and...
Jung-Ho Ahn, Jiyeon Ma, Doeon Lee, Qiubao Lin, Youngseo Park, O. Lee, Sangwan Sim, Kyusang Lee, G. Yoo, J. Heo   +9 more
semanticscholar   +1 more source

NIR polymers and phototransistors

Journal of Materials Chemistry C, 2018
A novel bisthiophene-fused diketopyrrolopyrrole unit (4,11-bis(2-octyldodecyl)-7H,14H-thieno[3′,2′:7,8]indolizino[2,1-a]thieno[3,2-g]indolizine-7,14-dione, BTI) has been designed as an electron acceptor and used to copolymerize with thiophene and bithiophene as electron donors to construct two D–A conjugated polymers, P1 and P2via Stille coupling ...
Lanchao Ma, Bing Chen, Yunlong Guo, Yongri Liang, Dongmei Zeng, Xiaowei Zhan, Yunqi Liu, Xingguo Chen   +7 more
openaire   +1 more source

InP/InGaAs heterojunction phototransistors

IEEE Journal of Quantum Electronics, 1981
We describe the fabrication and device characteristics of experimental back-illuminated InP/InGaAs n-p-n heterojunction phototransistors. These devices exhibit photoresponse in the wavelength range of 0.95-1.6 \mu m. An optical gain of 40 at an input power of 1 nW (an improvement of 1000 in sensitivity over previously reported phototransistors) has ...
null Joe Campbell, A. Dentai, C. Burrus, J. Ferguson   +3 more
openaire   +1 more source

Active pixel sensor matrix based on monolayer MoS2 phototransistor array

Nature Materials, 2022
Akhil Dodda, Darsith Jayachandran, Andrew Pannone, N. Trainor, S. Stepanoff, M. Steves, Shiva Subbulakshmi Radhakrishnan, S. Bachu, Claudio W Ordonez, J. Shallenberger, J. Redwing, K. Knappenberger, D. Wolfe, Saptarshi Das   +13 more
semanticscholar   +1 more source

Stretchable colour-sensitive quantum dot nanocomposites for shape-tunable multiplexed phototransistor arrays

Nature Nanotechnology, 2022
Jun‐Kyul Song, Junhee Kim, Ji-Yoon Yoon, Ja Hoon Koo, Hyunjin Jung, Kyumin Kang, Sung‐Hyuk Sunwoo, Seungwon Yoo, Hogeun Chang, Jinwoung Jo, Woonhyuk Baek, Sanghwa Lee, Mincheol Lee, Hye Jin Kim, M. Shin, Y. J. Yoo, Y. Song, T. Hyeon, Dae‐Hyeong Kim, Donghee Son   +19 more
semanticscholar   +1 more source