Photo-generation rate, G, depends on absorption coefficient of material alpha, i
ID: 2082819 • Letter: P
Question
Photo-generation rate, G, depends on absorption coefficient of material alpha, incident wavelength, lambda thickness of material, all of the above From the capacitance voltage characteristics (l/C^2 vs. V) of a p-n junction solar cell, the built-in voltage can be measured: from the slope from the voltage-intercept from the capacitance-intercept none of the above In a dye sensitized TiO_2 solar cell, which is not a p-n junction solar cell, the light is mainly absorbed by which material? TiO_2 Electrolyte Dye Low solar cell efficiency could be contributed by the optical loss due to: Not absorbed radiation Reflection Shadowing All of the above Solar cell delivers maximum current when in short-circuit condition in open-circuit condition with a high external loadExplanation / Answer
8.d
11.d
12.a
the maximum voltage that the solar cell can develop is open circuit voltage Voc
the maximum current of solar cell is short circuir current Isc
Optical losses chiefly effect the power from a solar cell by lowering the short-circuit current. Optical losses consist of light which could have generated an electron-hole pair, but does not, because the light is reflected from the front surface, or because it is not absorbed in the solar cell and also Reflection can be reduced by surface texturing.