Design and optimization of transparent scattering solar concentrator based on SiO2 aerogel |
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| Authors: | Feng Zhang Jun Bao Chen Gao |
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| Affiliation: | 1.National Synchrotron Radiation Laboratory & Collaborative Innovation Center of Chemistry for Energy Materials, University of Science and Technology of China, Hefei 230029, China2.School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | Scattering solar concentrators (SSCs), an important component of transparent/translucent photovoltaic devices, can concentrate large-area sunlight on small-area solar cells while allowing some sunlight to pass through the devices. However, owing to the lack of suitable scattering materials, there have been few reports on SSCs in recent years. In this study, we fabricated SiO2 aerogel-based SSCs and tested their performances. The photoelectric performance was found to be moderate. Additionally, the results demonstrated excellent transmittance and color rendering index, which meet the lighting requirements of the windows. A Monte Carlo ray tracing program was developed to simulate an SSC and analyze the fate of all photons. We also analyzed the multiple scattering mechanism in SSCs that damages the photoelectric efficiency of a device via theoretical simulation. Finally, we proposed an anisotropic scattering device that can increase the primary scattering and suppress multiple scattering, resulting in excellent photoelectric efficiency. |
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| Keywords: | solar concentrators scattering Monte Carlo ray tracing aerogel |
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