Patent ID: 7915611

Claim:
A photoelectric conversion device comprising: an insulating layer formed over a supporting substrate; and a first unit cell and a second unit cell formed over the insulating layer, wherein the first unit cell includes at least a first electrode, a single crystal semiconductor layer, a first impurity semiconductor layer having one conductivity type, and a second impurity semiconductor layer having an opposite conductivity type to the one conductivity type, wherein the second unit cell includes at least a second electrode, a non-single-crystal semiconductor layer, a third impurity semiconductor layer having one conductivity type, and a fourth impurity semiconductor layer having an opposite conductivity type to the one conductivity type, wherein the single crystal semiconductor layer is formed between the first impurity semiconductor layer and the second impurity semiconductor layer, wherein the single crystal semiconductor layer is formed over the first electrode with the first impurity semiconductor layer interposed therebetween, wherein the non-single-crystal semiconductor layer is formed between the third impurity semiconductor layer and the fourth impurity semiconductor layer, wherein the second electrode is formed over the non-single-crystal semiconductor layer with the fourth impurity semiconductor layer interposed therebetween, and wherein conductive clusters formed of metal, metal nitride, or metal oxide are included at a bonding interface between the second impurity semiconductor layer and the third impurity semiconductor layer.