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Calculation of the maximum attainable efficiency of a single heterojunction solar cell

✍ Scribed by Alexis De Vos

Publisher
Elsevier Science
Year
1976
Weight
740 KB
Volume
16
Category
Article
ISSN
0013-7480

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✦ Synopsis

A~traet--Starting from a heterogeneous semiconductor junction, with an ideal diode characteristic, the maximum attainable efficiency t/is calculated for the conversion of solar energy into electric energy.

It is calculated as a function of the two semiconductor band gaps, Eot and Eg2, and of two material parameters, al and a2. The present paper shows how a heterojunction solar cell exhibits better utilization of the solar energy than a homojunction solar cell, but also how the low open circuit voltage completely destroys this advantage. It is proved that the only possible benefits of using a heterojunction, are less severe conditions for the parameters al and a2.

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