부산대학교 도서관

The dependences of the open-circuit voltage, fill factor, and efficiency of the thin-film CdS/CdTe solar cell on the resistivity ρ and carrier lifetime τ in the absorbing CdTe layer were studied. In the common case in which the uncompensated acceptor concentration and the electron lifetime in the CdTe layer are within [10.sup.15]-[10.sup.16] [cm.sup.-3] and [10.sup.-10]-[10.sup.-9] s, the calculation results correspond to the achieved efficiency of the best thin-film CdS/CdTe solar cells. It was shown that, by decreasing ρ and increasing τ in the absorbing CdTe layer, the open-circuit voltage, fill factor, and efficiency can be substantially increased, with their values approaching the theoretical limit for such devices. DOI: 10.1134/S1063782610100234
1. INTRODUCTION Within the last 10-15 years, the CdS/CdTe hetero-structure has been considered the most promising for semiconductor solar power engineering [1-3]. The attained efficiency of laboratory samples of thin-film [...]