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Study on the energy conversion limit for laser-radiated photoelectric cells
Pages: 406-411
Year: Issue:  4
Journal: Laser & Infrared

Keyword:  laser energy transmissionphotovoltaic cellenergy efficiencydetailed balance theorynear-space vehicle;
Abstract: The researches of feeding the electrical power of near-space vehicles by the laser energy transmission tech-nology have been explored extensively.To study the performance limit of the laser-radiated photoelectric cells,the rela-tionship of energy gap and laser wavelength was analyzed,the calculation methods of the output parameters were pro-posed based on the detailed balance theory,and the analytical expressions were derived.The influence rules of the la-ser wavelengths,power densities,and the cell temperatures on the output performance parameters were achieved by theory calculations.The results show that there exists an optimum laser wavelength to maximize the energy efficiency for photoelectric cells with specific materials.Moreover higher laser power density leads to higher energy efficiency,but not remarkably after it reaches a certain value.Different output feature parameters have different related temperature coefficients for the influences of the cell temperature.
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