Patent ID: 8759670

Claim:
A photovoltaic converter device comprising: a first material layer having a first material; and a plurality of particles, the plurality of particles dispersing among the first material, each of the plurality of particles including a second material and a third material, the second material being covered by the third material, wherein the first material has a band gap E 1 , the second material has a band gap E 2 , the third material has a band gap E 3 , the band gap E 3 is greater than the band gap E 1 , and the band gap E 3 is greater than the band gap E 2 , a carrier generated at the second material is extracted to the first material through the third material by a tunneling effect, the second material is at least one material selected from the group consisting of c-Ge, a-Ge, PbS, PbSe, GaAs, ZnSe, β-GeSi 2 , and β-FeSi 2 , and the third material is at least one material selected from the group consisting of ITO, FTO, and ATO.