PHOTOVOLTAIC DEVICE AND METHOD FOR PREPARATION THEREOF

Title:

PHOTOVOLTAIC DEVICE AND METHOD FOR PREPARATION THEREOF

Document Type and Number:

WIPO Patent Application WO/2011/074280

Kind Code:

A1

Abstract:

The disclosed photovoltaic device comprises a semiconductor substrate (1) of a first conductivity type having an impurity diffusion layer (3), an antireflection film (4) formed on the impurity diffusion layer (3), first electrodes (5) connected electrically to the impurity diffusion layer (3), a reverse-face insulation film (8) having openings (8a) penetrating to the other face side of the semiconductor substrate (1) and formed on the other face side of the semiconductor substrate (1), second electrodes (9) connected electrically to the other face side of the semiconductor substrate (1), and a reverse-face reflection film (10) formed so as to cover at least the reverse-face insulation film (8). The openings (8a) are respectively in nearly a rectangular shape in the face plane direction of the reverse face of the semiconductor substrate (1), and a plurality thereof are arranged in nearly parallel lines in the short-length direction of the opening (8a). The second electrodes (9) are respectively nearly in the same shape as the openings (8a) and a plurality thereof are arranged in nearly parallel lines at an electrode pitch ranging from 1.5 to 3.0 mm in short-length direction of the second electrode (9). The width of the second electrode (9) in the short length direction ranges from 20 to 200 μm.

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Inventors:

SATO TAKEHIKO (JP)
HIZA SHUICHI (JP)
SAKAI MASASHI (JP)
MATSUNO SHIGERU (JP)

Application Number:

PCT/JP2010/058288

Publication Date:

June 23, 2011

Filing Date:

May 17, 2010

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)
SATO TAKEHIKO (JP)
HIZA SHUICHI (JP)
SAKAI MASASHI (JP)
MATSUNO SHIGERU (JP)

International Classes:

H01L31/04

Foreign References:

JP2004006565A

2004-01-08

Attorney, Agent or Firm:

SAKAI, HIROAKI (JP)
Hiroaki Sakai (JP)

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