相关实验视频

Updated: May 27, 2025

Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System

Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System

Published on: July 18, 2015

使用Ti和GaAs的宽带太阳能捕获吸收器的热辐射分析

Yifan Xiao¹, Can Ma², Tangyou Sun³

¹School of Mathematics and Science, Joint Laboratory for Extreme Conditions Matter Properties, The State Key Laboratory of Environment-friendly Energy Materials, Tianfu Institute of Research and Innovation, Southwest University of Science and Technology, Mianyang 621010, China. yizaomy@swust.edu.cn.

Dalton transactions (Cambridge, England : 2003)

|February 17, 2025

概括

这项研究设计了一种使用和化的新型太阳能吸收器,在广泛的光谱中实现了超过97%的平均吸收效率. 这种高效的太阳能吸收器即使在高温和不同冲击角度下也表现出极好的性能.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
可再生能源可再生能源是可再生能源.

背景情况:

高效的太阳能采集对于可再生能源技术至关重要.
开发具有高效率和热稳定的宽带吸收器是一个持续的挑战.

研究的目的:

使用时间域有限差异 (FDTD) 方法设计和分析一个高效的太阳能捕获吸收器.
为了研究Ti/GaAs纳米结构的吸收和热辐射特性.

主要方法:

利用时间域有限差异 (FDTD) 方法进行电磁模拟.
设计了一种由高点金属 () 和半导体 (化) 组成的太阳能吸收器.
分析了结构在波长,冲击角度和工作温度方面的性能.

主要成果:

在广泛的波长范围 (280-3000 nm) 实现了>90%的吸收.
在AM1.5条件下,其平均吸收效率为97.0%.
在0°至60°的入射角度保持稳定的吸收率 (>94%) .
在高达1400K的温度下表现出高热辐射效率 (高达98.2%),在600K和1400K之间保持在98%以上的稳定性.

结论:

设计的Ti/GaAs吸收器具有出色的宽带吸收和热辐射性能.
该结构在广泛的波长范围,冲击角度和高温的性能稳定性使其适用于太阳能应用.
这项工作为先进的太阳能吸收和热发射设备提供了有前途的材料.

更多相关视频

Experimental System of Solar Adsorption Refrigeration with Concentrated Collector

Experimental System of Solar Adsorption Refrigeration with Concentrated Collector

Published on: October 18, 2017

Close-Space Sublimation-Deposited Ultra-Thin CdSeTe/CdTe Solar Cells for Enhanced Short-Circuit Current Density and Photoluminescence

Close-Space Sublimation-Deposited Ultra-Thin CdSeTe/CdTe Solar Cells for Enhanced Short-Circuit Current Density and Photoluminescence

Published on: March 6, 2020

相关概念视频

Absorption of Radiation

Absorption of Radiation

The rate of heat transfer by emitted radiation is described by the Stefan-Boltzmann law of radiation:

Radiation: Applications

Radiation: Applications

The average temperature of Earth is the subject of much current discussion. Earth is in radiative contact with both the Sun and dark space; it receives almost all its energy from the radiation of the Sun and reflects some of it into outer space. Dark space is very cold, about 3 K, so Earth radiates energy into it. For instance, heat transfer occurs from soil and grasses, the rate of which can be so rapid that frost can occur on clear summer evenings, even in warm latitudes.
The average...

Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview

Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview

Attenuated total reflectance (ATR) infrared spectroscopy is a powerful analytical technique used to study the composition of materials. It is widely employed in chemistry, materials science, forensic science, and other fields where sample characterization is required. ATR has several advantages over traditional transmission IR spectroscopy, including the requirement of little to no sample preparation and the ability to analyze a wide range of samples.
The ATR process begins by directing a beam...