Temperature reduction of solar cells in a concentrator photovoltaic system using a long wavelength cut filter

摘要

We propose a Fresnel lens optical concentration system that can reduce the solar cell temperature. For the reduction of the solar cell temperature, we added a long-wavelength cut filter in order to utilize the part of the solar spectrum that is beneficial to a solar cell while reflecting the rest of the long-wavelength spectrum. A thermal simulation was conducted to estimate the actual cell temperature for optical systems with and without the long-wavelength cut filter, and the results showed a decrease of approximately 25.3 degrees C in the solar cell temperature using the filter. The lifetime of a solar cell can be extended by reducing its temperature, and the results showed an increase of 1.9 x 10(5) h in the lifetime of the solar cell. (C) 2017 The Japan Society of Applied Physics