Results 21 to 30 of about 372,503 (352)

III-nitride power semiconductor technology toward carbon peaking and carbon neutrality goals

open access: yes机车电传动, 2023
Guided by the national development strategy of China about carbon peaking and carbon neutrality, it is necessary to use clean energy and electricity in energy consumption, and power semiconductor technology plays a crucial part in this 2 processes.
LUO Zhuoran   +3 more
doaj  

The gain and carrier density in semiconductor lasers under steady-state and transient conditions [PDF]

open access: yes, 1992
The carrier distribution functions in a semiconductor crystal in the presence of a strong optical field are obtained. These are used to derive expressions for the gain dependence on the carrier density and on the optical intensity-the gain suppression ...
Chen, T. R., Yariv, Amnon, Zhao, Bin
core   +1 more source

Passivation Effect on ZnO Films by SF6 Plasma Treatment

open access: yesCrystals, 2019
The passivation effects of SF6 plasma on zinc oxide (ZnO) films prepared by magnetron sputtering were researched. After the SF6 plasma passivation of ZnO films, the grain size increases, there is low surface roughness, and a small amount of Zn-F bonds ...
Yumeng Xu   +3 more
doaj   +1 more source

Comparison of active dual‐gate and passive mixers for terahertz applications

open access: yesIET Circuits, Devices and Systems, 2021
The authors propose four versions of a dual‐gate active down‐conversion mixer for H‐band applications. The mixer operates at a local oscillator (LO) frequency of 240 GHz.
Christopher M. Grötsch   +4 more
doaj   +1 more source

Machine Learning Algorithm for Efficient Design of Separated Buffer Super-Junction IGBT

open access: yesMicromachines, 2023
An improved structure for an Insulated Gate Bipolar Transistor (IGBT) with a separated buffer layer is presented in order to improve the trade-off between the turn-off loss (Eoff) and on-state voltage (Von).
Ki Yeong Kim   +4 more
doaj   +1 more source

Fast detector of the ellipticity of infrared and terahertz radiation based on HgTe quantum well structures [PDF]

open access: yes, 2008
We report a fast, room temperature detection scheme for the polarization ellipticity of laser radiation, with a bandwidth that stretches from the infrared to the terahertz range. The device consists of two elements, one in front of the other, that detect
A. F. G. van der Meer   +23 more
core   +3 more sources

Broader, flatter optical spectra of passively mode-locked semiconductor lasers for a wavelength-division multiplexing source [PDF]

open access: yes, 1997
Using the time domain master equation for a complex electric-field pulse envelope, we find analytical results for the optical spectra of passively mode-locked semiconductor lasers. The analysis includes the effect of optical nonlinearity of semiconductor
Eliyahu, Danny   +2 more
core   +1 more source

Brief Review of Photocatalysis and Photoresponse Properties of ZnO–Graphene Nanocomposites

open access: yesEnergies, 2021
As a typical wide bandgap semiconductor, ZnO has received a great deal of attention from researchers because of its strong physicochemical characteristics. During the past few years, great progress has been made in the optoelectronic applications of ZnO,
Chenhao Gao   +10 more
doaj   +1 more source

Analysis of Electrical Characteristics in 4H-SiC Trench-Gate MOSFETs with Grounded Bottom Protection p-Well Using Analytical Modeling

open access: yesApplied Sciences, 2021
A new analytical model to analyze and optimize the electrical characteristics of 4H-SiC trench-gate metal-oxide-semiconductor field-effect transistors (TMOSFETs) with a grounded bottom protection p-well (BPW) was proposed.
Jee-Hun Jeong, Ogyun Seok, Ho-Jun Lee
doaj   +1 more source

Semiconductor quantum dots devices: Recent advances and application prospects [PDF]

open access: yes, 2006
In this paper, a brief review will be given on recent advances in semiconductor quantum dots based optoelectronic devices. The focus will be on two major application areas, i.e., telecom devices and high power light sources, where some device examples ...
Akiyama   +28 more
core   +1 more source

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