Example A crystalline silicon solar cell generates a photo-current density of Jph = 35 mA/cm. The...

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Example A crystalline silicon solar cell generates a photo-current density of Jph = 35 mA/cm². The wafer is doped with 1017 acceptor atoms per cubic centimetre and the emitter layer is formed with a uniform concentration of 1019 donors per cubic centimetre. The minority-carrier diffusion length in the p- type region and n-type region is 500-10-6 m and 10. 10-6 m, respectively. Further, the intrinsic carrier concentration in silicon at 300 K is 1.5. 10¹0 cm-3, the mobility of electrons in the p-type region is un = 1000 cm²V-¹s-¹ and holes in the n-type region is up = 100 cm²V-¹s-¹. Assume that the solar cell behaves as an ideal diode. Calculate the built-in voltage, the open-circuit voltage and the conversion efficiency of the cell. Example A crystalline silicon solar cell generates a photo-current density of Jph = 35 mA/cm². The wafer is doped with 1017 acceptor atoms per cubic centimetre and the emitter layer is formed with a uniform concentration of 1019 donors per cubic centimetre. The minority-carrier diffusion length in the p- type region and n-type region is 500-10-6 m and 10. 10-6 m, respectively. Further, the intrinsic carrier concentration in silicon at 300 K is 1.5. 10¹0 cm-3, the mobility of electrons in the p-type region is un = 1000 cm²V-¹s-¹ and holes in the n-type region is up = 100 cm²V-¹s-¹. Assume that the solar cell behaves as an ideal diode. Calculate the built-in voltage, the open-circuit voltage and the conversion efficiency of the cell.

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Answers Probler 3 Given that Z Photo Current density Jph 35 mAcm NA 1x107 3 Acceptol Atoms 1023 3 Do... View the full answer