PHOTOVOLTAIC CELL AND MANUFACTURING METHOD OF PHOTOVOLTAIC CELL

1 . A photovoltaic cell comprising:

a translucent substrate;

a photoelectric conversion element disposed on a light emission surface of the substrate; and

a light guide member disposed on a light incidence surface of the substrate, at a position opposite the photoelectric conversion element across the substrate.

2 . The photovoltaic cell according to claim 1 , further comprising:

a condenser lens,

wherein the condenser lens is disposed at a position opposite the photoelectric conversion element across the substrate and the light guide member.

3 . The photovoltaic cell according to claim 1 ,

wherein a water-repellant material is provided to enclose the photoelectric conversion element and the light guide member on the light emission surface and the light incidence surface of the substrate.

4 . The photovoltaic cell according to claim 3 ,

wherein the light incidence surface of the substrate includes a first hydrophilic region which is enclosed by the water-repellant material and on which the light guide member is disposed,

the light emission surface of the substrate includes a second hydrophilic region which is enclosed by the water-repellant material and on which the photoelectric conversion element is disposed, and

an area of the second hydrophilic region is larger than an area of the first hydrophilic region.

5 . The photovoltaic cell according to claim 4 , wherein the first hydrophilic region and the second hydrophilic region have a rectangular shape.

6 . A manufacturing method of a photovoltaic cell, the method comprising:

forming a first hydrophilic region on a light incidence surface of a translucent substrate;

disposing a light guide member within the first hydrophilic region;

forming a second hydrophilic region on a light emission surface of the substrate, at a position opposite the light guide member across the substrate; and

disposing a photoelectric conversion element in the second hydrophilic region.

7 . The manufacturing method of a photovoltaic cell according to claim 6 , wherein the first hydrophilic region and the second hydrophilic region are formed by an exposure process.

8 . The manufacturing method of a photovoltaic cell according to claim 7 , further comprising:

disposing a condenser lens on an optical axis passing through the light guide member and the photoelectric conversion element on a light incidence surface of the substrate.

9 . The manufacturing method of a photovoltaic cell according to claim 8 , wherein the exposure process for the second hydrophilic region is performed using light after passing through the condenser lens.

10 . The manufacturing method of a photovoltaic cell according to claim 7 , wherein the second hydrophilic region is formed by exposure to light passing through the light guide member, after the light guide member is disposed.

11 . The manufacturing method of a photovoltaic cell according to claim 8 , further comprising:

performing an exposure process for forming the first hydrophilic region after a photoresist layer is formed at a light incidence surface side of the substrate, and performing an exposure process for forming the second hydrophilic region after a photoresist layer is formed at a light emission surface side of the substrate,

wherein a first distance from the photoresist layer to the condenser lens during the exposure process for forming the first hydrophilic region is different from a second distance from the photoresist layer to the condenser lens during the exposure process for forming the second hydrophilic region.

12 . The manufacturing method of a photovoltaic cell according to claim 11 , wherein the second distance is longer than the first distance.