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C60 solids have been known as high resistive semiconductor materials. Such high resistivity is one of the reasons of low charge transport efficiency in organic solar cells. Mg doping in C60 films was done by the co-evaporation method of C60 and Mg sources. The conductivity could be controlled by the composition ratio of Mg/C60, and its dependence is divided into 3 ranges (Mg/C60 = 0∼2, 2∼6, ≫6). Temperature...
Carbon materials can be expected as one of the promising materials for next generation low-cost solar cells. We have proposed C60/a-C superlattice structures as absorption layers. Superlattice structure has advantages to control the optical and electrical properties easily. In this paper, we will report Mg-doping in C60 films to control the conductivity of C60 layers for C60/a-C superlattice solar...
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