Results 61 to 70 of about 97,204 (266)

Solid-state ensemble of highly entangled photon sources at rubidium atomic transitions

Nature Communications, 2017
Scalable and integratable sources of entangled-photon pairs are an important building block for quantum photonic applications. Here, Keilet al. demonstrate that an ensemble of droplet-etched gallium arsenide quantum dots can emit polarization-entangled ...
Robert Keil, Michael Zopf, Yan Chen, Bianca Höfer, Jiaxiang Zhang, Fei Ding, Oliver G. Schmidt   +6 more
doaj   +1 more source

Squaraine Dyes for Organic Photomultiplication Photodetectors with 220% External Quantum Efficiency at 1240 nm

Advanced Science, EarlyView.
The synthesis of a range of squaraine dyes is reported with maximum absorption in solution above 1100 nm. Near‐infrared sensitive organic photomultiplication photodetectors are developed. Photomultiplication occurs via squaraine hole trap‐induced injection of electrons from the external circuit.
Joshua Csucker, Elodie Didier, João Pedro Ferreira Assunção, Daniel Rentsch, Radha Kothandaraman, Dominik Bachmann, Ivan Shorubalko, Frank Nüesch, Roland Hany, Michael Bauer   +9 more
wiley   +1 more source

Investigation of the possibility of implementing a mid-frequency broadband swept-frequency generator based on the structure of semi-insulating gallium arsenide [PDF]

Известия Саратовского университета. Новая серия Серия: Физика
Background and Objectives: In previous works, the authors of the article reported on the prospects of creating the functional microelectronic devices with wide functionality based on the semi-insulating gallium arsenide (GaAs) structures provided that ...
Mikhailov, Aleksandr Ivanovich, Kozhevnikov, Ilya Olegovich, Mitin, Anton V.   +2 more
doaj   +1 more source

Diffusion of sulfur in gallium phosphide and gallium arsenide [PDF]

Solid State Communications, 1969
Abstract A radiotracer technique was used to study the diffusion of sulfur in GaP and GaAs as a function of temperature, sulfur pressure, and component pressure. The results reported here indicate that the variation of diffusion coefficient with component pressure for sulfur in both GaP and GaAs is not in agreement with a model of vacancy diffusion ...
G.L. Pearson, A.B.Y. Young
openaire   +1 more source

Hybrid Solar Spectral‐Splitting Photovoltaic‐Thermal Hydrogen Production Systems

Advanced Science, EarlyView.
A hybrid solar photovoltaic‐thermal hydrogen system with membrane‐less electrolysis significantly boosts solar‐to‐hydrogen efficiency by co‐using thermal and electrical energy. The system attains good performance under variable irradiance with direct current power converters.
Yu Tian, Pooria Hadikhani, Nada Alati, Bryce S. Richards, Gan Huang   +4 more
wiley   +1 more source

Looking Inside Micro- and Nano-Mechanical Pillar Resonators: A Picosecond Ultrasonics Approach

Proceedings, 2020
Pillar-shaped Gallium arsenide (GaAs) micromechanical resonators are fabricated, and the feasibility to measure the inside of the pillars in the axial direction with laser-induced GHz ultrasound based on picosecond ultrasonics is tested.
Paul Stritt, Juliane Doster, Thomas Dekorsy, Vitalyi Gusev, Eva Weig, Mike Hettich   +5 more
doaj   +1 more source

Theoretical and experimental study of plasmonic effects in heavily doped gallium arsenide and indium phosphide

, 2015
Dispersion plasmonic interaction at an interface between a doped semiconductor and a dielectric is employed to use experimental data for determining the plasma frequency, the relaxation time, the effective mass, and the mobility of free electrons in ...
M. Čada, D. Blažek, J. Pistora, K. Postava, P. Siroký   +4 more
semanticscholar   +1 more source

Photovoltaic and Photomultiplication Dual‐Mode Near‐Infrared Organic Detectors with Large Dynamic Range for Intensive and Faint Light Sensing

Advanced Science, EarlyView.
A photovoltaic/photomultiplication dual‐mode organic photodetector is developed by integrating two different organic bulk‐heterojunctions, one introduces the photovoltaic effect, and the other triggers photomultiplication charge generation in the stacked device at different voltage polarities.
Xin Hu, Ning Li, Mingyang Ren, Yifan Ji, Hongmei Guo, Qian Chen, Xiubao Sui   +6 more
wiley   +1 more source

Radiation Hardened Infrared Photodetectors Based on a Narrow Bandgap Conjugated Polymer Semiconductor

Advanced Electronic Materials, EarlyView.
A blackbody‐sensitive infrared photodetector comprised of an open‐shell conjugated polymer demonstrates high sensitivity without cooling and exceptional radiation hardness, surpassing inorganic compound semiconductor devices. This functionality, inherent to the polymer semiconductor, provides a new frontier for low‐cost, size, weight, and power space ...
Anthony R. Benasco, Chih‐Ting Liu, Bernie Rax, Giacomo Mariani, Steve McClure, Tyler Bills, Sanyukta Datta Gupta, Mohammad I. Vakil, Stefan Nikodemski, Jarrett H. Vella, Jason D. Azoulay   +10 more
wiley   +1 more source

Self‐Aligned Heterojunction Gate Carbon Nanotube Phototransistors for Highly Sensitive Infrared Detection

Advanced Electronic Materials, EarlyView.
This paper presents a self‐aligned heterojunction gate phototransistor that eliminates the need for high‐precision alignment tools. The device achieves a high responsivity of 2.9 × 105 A W−1 and a specific detectivity of 9.6 × 1013 Jones, comparable to the performance of non‐self‐aligned devices requiring complex fabrication.
Jingjing Ge, Xiaolu Xia, Maguang Zhu, Shaoyuan Zhou, Yifu Sun, Hangqi Ma, Xinyue Pei, Dijie Zhang, Ying Wang, Zhiyong Zhang   +9 more
wiley   +1 more source