Photovoltaic devices, photovoltaic modules provided therewith, and solar power generation systems

Patent metadata

Field	Value
Publication number	US-2017338365-A1
Application number	US-201515522117-A
Country	US
Kind code	A1
Filing date	Oct 23, 2015
Priority date	Oct 31, 2014
Publication date	Nov 23, 2017
Grant date	—

Abstract

n-type amorphous semiconductor layers ( 4 ) and p-type amorphous semiconductor layers ( 5 ) are alternately disposed on the back surface of a semiconductor substrate ( 1 ) so as to be separated from each other at a desired interval paralleled with the direction of the surface of the semiconductor substrate ( 1 ). An electrode ( 6 ) is disposed on the n-type amorphous semiconductor layer ( 4 ), and an electrode ( 7 ) is disposed on the p-type amorphous semiconductor layer ( 5 ). A protective film ( 8 ) includes an insulating film, and is disposed on a passivation film ( 3 ), the n-type amorphous semiconductor layer ( 4 ), the p-type amorphous semiconductor layer ( 5 ), and the electrodes ( 6, 7 ), so as to be in contact with the passivation film ( 3 ), the n-type amorphous semiconductor layer ( 4 ), the p-type amorphous semiconductor layer ( 5 ), and the electrodes ( 6, 7 ).

First claim

1 . A photovoltaic device comprising:
a semiconductor substrate; a first amorphous semiconductor layer which is formed on one surface of the semiconductor substrate and has a first conductivity type; a second amorphous semiconductor layer which is formed on the one surface of the semiconductor substrate, is formed to be adjacent to the first amorphous semiconductor layer paralleled with a direction of the surface of the semiconductor substrate, and has a second conductivity type which is opposite to the first conductivity type; a first electrode which is formed on the first amorphous semiconductor layer; a second electrode which is formed on the second amorphous semiconductor layer so as to be separated from the first electrode with a gap region in between; and a protective film which includes an insulating film and is formed on the first electrode, the second electrode, and the gap region.

2 . The photovoltaic device according to claim 1 , wherein the protective film has an opening portion on the first and second electrodes.

3 . The photovoltaic device according to claim 1 , wherein
the protective film is continuously formed on the first electrode, the second electrode, and the gap region.

4 . The photovoltaic device according to claim 1 , wherein
the protective film is further formed on a peripheral region of the semiconductor substrate.

5 . The photovoltaic device according to claim 1 , wherein
the protective film includes an inorganic insulating layer and an amorphous semiconductor layer.

6 . A photovoltaic module comprising:
a plurality of photovoltaic devices, wherein each of the plurality of photovoltaic devices is the photovoltaic device according to claim 1 .

7 . A solar power generation system comprising:
a photovoltaic module array including a plurality of photovoltaic modules, a combiner box being connected to the photovoltaic module array, a power conditioner being connected to the combiner box, a distribution board being connected to the power conditioner and an electrical equipment, and a power meter being connected to the distribution board and grid interconnection, wherein each of plurality of photovoltaic modules is the photovoltaic module according to claim 6 .

8 . The solar power generation system according to claim 7 , further comprising a storage battery being connected to the power conditioner.

Assignees

• Sharp Kk

Inventors

• Kamikawa Takeshi
• Harada Masatomi
• Sakai Toshihiko
• Kuniyoshi Tokuaki
• ZOU Liumin

Classifications

• H02S40/34

  comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes · CPC title

• H02S40/38

  Energy storage means, e.g. batteries, structurally associated with PV modules · CPC title

• H02S50/00

  Monitoring or testing of PV systems, e.g. load balancing or fault identification · CPC title

• H01L31/022425

  Electricity · mapped topic

• H01L31/0747 Primary

  Electricity · mapped topic