材料科学
光电子学
吸收(声学)
半导体
光伏系统
俘获
纳米化学
等离子太阳电池
砷化镓
太阳能电池
太阳能
波长
光学
聚合物太阳能电池
纳米技术
物理
复合材料
生物
生态学
作者
Yuyin Li,Zhengqi Liu,Pingping Pan,Xiaoshan Liu,Guolan Fu,Hong-Gang Luo,Guiqiang Liu
标识
DOI:10.1186/s11671-020-03311-2
摘要
Abstract Light trapping is an important performance of ultra-thin solar cells because it cannot only increase the optical absorption in the photoactive region but it also allows for the efficient absorption with very little materials. Semiconductor-nanoantenna has the ability to enhance light trapping and raise the transfer efficiency of solar energy. In this work, we present a solar absorber based on the gallium arsenide (GaAs) nanoantennas. Near-perfect light absorption (above 90%) is achieved in the wavelength which ranges from 468 to 2870 nm, showing an ultra-broadband and near-unity light trapping for the sun’s radiation. A high short-circuit current density up to 61.947 mA/cm 2 is obtained. Moreover, the solar absorber is with good structural stability and high temperature tolerance. These offer new perspectives for achieving ultra-compact efficient photovoltaic cells and thermal emitters.
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