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- Title
Semiconductor-nanoantenna-assisted solar absorber for ultra-broadband light trapping.
- Authors
Li, Yuyin; Liu, Zhengqi; Pan, Pingping; Liu, Xiaoshan; Fu, Guolan; Liu, Zhongmin; Luo, Haimei; Liu, Guiqiang
- 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/cm2 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.
- Subjects
INSECT traps; SOLAR radiation; PHOTOVOLTAIC cells; SHORT-circuit currents; SOLAR energy
- Publication
Nanoscale Research Letters, 2020, Vol 15, Issue 1, p1
- ISSN
1931-7573
- Publication type
Article
- DOI
10.1186/s11671-020-03311-2