Influence of proton irradiation and development of flexible CdTe solar cells on polyimide

摘要

CdTe/CdS solar cells of ～10% efficiency, developed with a vacuum deposition method were irradiated with high-energy protons of different fluences. The V_(OC) and f.f. of irradiated cells increase or decrease depending on the fluence. The normal soda lime glass substrate darkens under the irradiation; therefore low Isc is measured. Measurements suggest that CdTe solar cells are highly stable under proton flux. Flexible and lightweight solar cells were developed in a superstrate configuration on polymer substrates. 8.6% efficiency cells with Voc～770 mV and Isc of 20.3 mA/cm~2 were achieved.