Patent ID: 8044296
Filing Date: 2011-10-25
Classification: H01L,Y02E

Abstract:
1. A photovoltaic device comprising: a substrate having a first insulating surface; an insulating layer having a second insulating surface, wherein the second insulating surface is formed in contact with the first insulating surface; a first electrode formed over the insulating layer; a single crystal semiconductor layer formed over the first electrode, wherein the single crystal semiconductor layer comprises hydrogen and halogen; a protection film formed over the single crystal semiconductor layer, and a second electrode formed over the protection film, wherein the single crystal semiconductor layer comprises: wherein the protection film comprises the second impurity, wherein a first conductivity type of the first impurity is different from a second conductivity type of the second impurity, wherein the second impurity layer comprises: wherein a concentration of halogen in the second region is higher than that of the first region, and wherein the second insulating surface is able to form a hydrophilic surface.