Results 21 to 30 of about 9,194 (219)

Enhancing photoelectrochemical CO2 reduction with silicon photonic crystals

Frontiers in Chemistry, 2023
The effectiveness of silicon (Si) and silicon-based materials in catalyzing photoelectrochemistry (PEC) CO2 reduction is limited by poor visible light absorption.
Chu Zhou, Chu Zhou, Gaotian Zhang, Peiyuan Guo, Chenxi Ye, Zhenjun Chen, Ziyi Ma, Menglong Zhang, Menglong Zhang, Jingbo Li   +9 more
doaj   +1 more source

Spectral Characterization of Solid-State Photocathode Emission [PDF]

, 2020
The goal of this thesis work is to connect the electronic properties of a crystal (i.e. its band structure) to its photoemission properties and thereby provide a roadmap for the discovery (or development) of photocathode materials with low intrinsic ...
Gowri D Adhikari (10211885)
core   +1 more source

Polymeric Benzothiadiazole, Benzooxadiazole, and Benzoselenadiazole Photocathodes for Photocatalytic Oxygen Reduction to Hydrogen Peroxide

Advanced Materials Interfaces, 2023
Visible‐light‐driven semiconductor photoelectrodes are promising new devices for on‐demand photocathodic generation of hydrogen peroxide. Herein, the fabrication of organic polymeric photocathodes employing poly(4,7‐di(thiophen‐2‐yl)benzo[c][1,2,5 ...
Roman Gańczarczyk, Renata Rybakiewicz‐Sekita, Maciej Gryszel, Jakub Drapała, Małgorzata Zagórska, Eric Daniel Głowacki   +5 more
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Temperature-dependent quantum efficiency degradation of K-Cs-Sb bialkali antimonide photocathodes grown by a triple-element codeposition method

Physical Review Accelerators and Beams, 2017
K-Cs-Sb bialkali antimonide photocathodes grown by a triple-element codeposition method have been found to have excellent quantum efficiency (QE) and outstanding near-atomic surface smoothness and have been employed in the VHF gun in the Advanced ...
Zihao Ding, Siddharth Karkare, Jun Feng, Daniele Filippetto, Matthew Johnson, Steve Virostek, Fernando Sannibale, James Nasiatka, Mengjia Gaowei, John Sinsheimer, Erik Muller, John Smedley, Howard Padmore   +12 more
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NiO Nano-Flower Sensitized by Perovskite as Photocathode for p-DSSC with Superior Hole Transfer Kinetics

International Journal of Electrochemical Science, 2016
NiO nano-flower, NiO slice-cluster and NiO nanoparticles have been synthesized by a facile method. The structure and morphology of the prepared samples were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM).
Jie Qu, Yurong Ren, Jia Cheng, Jianning Ding, Ningyi Yuan   +4 more
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Enhancement of near-infrared response for GaAs-based photocathode with laminated graded-bandgap structure: theory and experiment

Journal of Materials Research and Technology, 2022
To enhance the quantum efficiency of GaAs-based photocathode in the near-infrared range, a laminated graded-bandgap photocathode structure consisting of a distributed Bragg reflection layer and a graded-bandgap emission layer is proposed. The theoretical
Ziheng Wang, Yijun Zhang, Shiman Li, Shan Li, Jingjing Zhan, Yunsheng Qian, Feng Shi, Hongchang Cheng, Gangcheng Jiao, Yugang Zeng   +9 more
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Photocathodes

, 2020
Photocathodes were at the heart of quantum physics development in the early twentieth century and are still used in high technology devices like night-vision goggles, photomultiplier tubes, and particle accelerators. The simplest form of the photocathode is a metallic surface, negatively biased, from which electrons are extracted by energetic photons ...
Liu, Wei, Poelker, Matt, Smedley, John, Ganter, Romain   +3 more
openaire   +3 more sources

The effect of geometry parameters on light harvesting performance of GaN nanostructure arrays—a numerical investigation and simulation

Materials Research Express, 2019
In this paper, COMSOL Multiphysics Commercial Package software is used to simulate the models of two kinds of GaN nanostructure arrays, and to study how the geometric structure and periodicity of arrays affect the optical properties of GaN nanostructures.
Xingyue Zhangyang, Lei Liu, Zhisheng Lv, Feifei Lu, Jian Tian   +4 more
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SUPERCONDUCTING PHOTOCATHODES [PDF]

The Physics and Applications of High Brightness Electron Beams, 2007
We present the results of our investigation of lead and niobium as suitable photocathode materials for superconducting RF injectors. Quantum efficiencies (QE) have been measured for a range of incident photon energies and a variety of cathode preparation methods, including various lead plating techniques on a niobium substrate.
J. SMEDLEY, T. RAO, J. WARREN, J. SEKUTOWICZ, J. LANGNER, P. STRZYŻEWSKI, R. LEFFERTS, A. LIPSKI   +7 more
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The Time Response of a Uniformly Doped Transmission-Mode NEA AlGaN Photocathode Applied to a Solar-Blind Ultraviolet Detecting System

Photonics
Due to the excellent quantum conversion and spectral response characteristics of the AlGaN photocathode, it has become the most promising III-V group semiconductor photocathode in solar-blind signal photoconversion devices in the ultraviolet band. Herein,
Jinjuan Du, Xiyao Li, Tiantian Jia, Hongjin Qiu, Yang Li, Rui Pu, Quanchao Zhang, Hongchang Cheng, Xin Guo, Jiabin Qiao, Huiyang He   +10 more
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