Abstract In the endeavour to improve conversion efficiency by the effective use of incident light, a detailed model which takes into account such optical processes as transmission, absorption and reflection in the cell has been tried out. By the treatment of an amorphous solar cell as a multilayer interference filter and with suitable choices of antireflection coating materials and thicknesses of the various layers, an increase in the performance characteristics of the cells has been attained. When a double-layer antireflection coating is used, higher efficiencies can be achieved. Efficiencies of about 16% for hydrogenated amorphous silicon (a-Si:H)/ polycrystalline silicon and of about 20% for a-Si:H/polycrystalline germanium tandem-type cells can be obtained. Our work shows that a read more

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Abstract Hardware and software studies strongly indicate that the feasibility of commercially producing A low cost, user-friendly photovoltaic cell curve tracer.The instrument will be used in conjunction with an IBM compatible PC.or a MAC and a printer.The system will print out a J versus V curve and compute various parameters/The author hope to market this instrument in near future. Download read more

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