RESEARCH DETECTED TOWARD THE IMPROVEMENT OF THE EFFICIENCY OF SILICON BATTERIES BY UTILIZATION OF UNABSORBED PHOTONS
TECHNICAL OPERATIONS INC BURLINGTON MASS
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Attempts were made to increase the power output of Si solar cells by sensitizing the cells to those regions in which they do not respond, UV and IR and by increasing the absorption and efficiency of the cells in the spectral regions in which they do respond. Three methods were studied 1 coating the cell surface with phosphors which absorb in the UV and blue region and fluoresed in the region of response of the solar cell 0.45 to 1.0 microns and with dye energy-transfer agents 2 applying antireflection coatings to the cell surface for the region of response and applying dye sensitizers for the IR region. Adsorption and response of Si solar cells was optimized by industry in the region 0.45 to 1.0 angstroms. Sensitization of the cells by phosphors in the UV region is feasible but the intensity of fluorescence required to drive the cell appears to be greater than that easily achieved by surface coating. Neither sensitization by chemical sensitizers in the UV region nor by dye sensitization in the IR region appears to be possible.