Abstract
AbstractThe efficiency of the most modern photovoltaic cells currently reaches 40–45%, which is achieved by concentrator systems. However, despite better device efficiencies concentrator photovoltaic cells have major drawback, namely the high amount of waste heat, which requires new cooling solutions.This paper gives a short overview of the current cooling techniques and proposes a novel microchannel cooling solution for concentrator photovoltaic cells. In the concept, the microscale channels are integrated into the backside metallization of the PV device. The paper gives a description of the technological process that can be used to produce microchannels on the back of solar cells and shows the optimization of the channels to achieve optimal cooling performance.
Highlights
Concentrating the incoming light on the surface of solar cells is a promising way of enhancing the efficiency of photovoltaic devices
The paper gives a description of the technological process that can be used to produce microchannels on the back of solar cells and shows the optimization of the channels to achieve optimal cooling performance
Optical microscopy was carried out to investigate the geometry of the channels before the evaporation of the second seed layer
Summary
Concentrating the incoming light on the surface of solar cells is a promising way of enhancing the efficiency of photovoltaic devices. Most of the efficiency records of recent years have been reached with Concentrator PhotoVoltaics (CPV) [1]. Despite better device efficiencies CPV systems have a major drawback, namely the high amount of waste heat that is caused by the high-power density and the photovoltaic conversion losses
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