Dr. Boris Gilman Profile

Dr. Boris Gilman

Principal Consultant at M-Borg Inc

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Proceedings Article | 3 November 2004 Paper

Quantum-radiative cooling for solar cells with textured surface

Boris Gilman, Igor Ivanov

Proceedings Volume 5520, (2004) https://doi.org/10.1117/12.556454

KEYWORDS: Solar cells, Photovoltaics, Silicon, Sun, Infrared radiation, Semiconducting wafers, Earth's atmosphere, Convection, Molecules, Quantum efficiency

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Efficient technique of Quantum Radiative Cooling (QRC) of textured Solar Cells and Modules is described that is capable of Solar Module (SM) temperature reduction by 5-20C, resulting in 3-10% efficiency increase. Novel methods are based on the quantum assisted IR emission from the surface covered by either multi-layer coatings made of Si-nitride, SiO or Si oxy-nitride films or specifically designed insulating sun-transparent chamber (QRC zone) that contains Selective Emissive (SE) gas or gas mix. QRC zone is mounted on the top of Solar Module replacing existing lamination coatings. To enhance the efficiency of QRC some specific methods and fabrication procedures are proposed to form an electricly charged textured surface that provide a high Electric Field at the surface thus enhancing IR emissivity from the surface. Such procedure can be also used to form the field Induced Surface Barriers in the Si-based Solar Cells that can substitute the existing diffused Emitters resulting in significant reduction of the Cycle Time as well as prospective Fabrication Cost.

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