Fuji Amorphous Silicon Solar Cells Fuji Amorphous Silicon Solar Cells

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17/Oct/2011Fuji Electric Co., Ltd.

Features

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1. Fuji’s modules are light-weight and flexible.

2. Fuji’s modules are mass-produced by a special roll-to-roll process.

3. Fuji’s modules have high output voltages made possible by their unique

Features of Fuji flexible amorphous PV modules

Fuji’s photovoltaic modules help develop new applications and

new markets.

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3. Fuji’s modules have high output voltages made possible by their unique

structure.

4. Fuji’s modules generate more power than crystalline silicon modules annually.

5. Fuji’s modules can be mounted on curved surfaces.

FWAVE Cell Structure

Top Layers

Sunlight

i(a-Si)

p

ITO

0.6

0.8

1.0

0.6

0.8

1.0

Top + Bottom

effic

iency

Transparent electrode (+)

E ncaps ulant

E TF E

C ell

E TF E

FWAVE cell

FWAVE module

- The top layer absorbs short wave lengths of light.

- The bottom layer absorbs long wave lengths of light. E ncaps ulant

E TF E

C ell

E TF E

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Top

Tandem Structure of FWAVE cell

50µｍｍｍｍ

Bottom Layers

１１１１µｍｍｍｍ

Film

n

i(a-SiGe)

p

n

Metal

Metal

0.0

0.2

0.4

300 400 500 600 700 800 900 1000

波? [nm]

0.0

0.2

0.4

300 400 500 600 700 800 900 1000

波? [nm]

Bottom

Wave length (nm)

Colle

ction

A tandem structure allows FWAVE modules to absorb a wide solar spectrum and to increase their efficiency.

Cell

Metal electrode (-)

Metal (connecting) electrode (+/-)

Plastic film substrate

FWAVE Cell

FWAVE modules have a unique SCAF structure which allows electrodes to be connected without wire.

FWAVE wire-less structure

ITOTransparent electrode(+)

Current collection holes Series connection holes

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5

Rear metal electrode(-)

SCAF : Series-Connection through Apertures Formed on Film Substrate

Plastic film substrate

Laser Scribed lines

Top & bottom layers

Film

n

i(a-SiGe)

pn

i(a-Si)

pITO

Transparent electrode(+)

Connection electrode(+,-)

A-Si has 10% higher power generation per year than C-Si

Power Generation Comparison between A-Si & C-Si

Annual power generation comparison

66668888

10101010G

ener

ate

d P

ow

er (

Wh

/day)

/ R

ate

d P

ow

er (

W) 0.80.80.80.81.01.01.01.01.21.21.21.2

Gen

erate

d E

ffic

ien

cy/R

ate

d E

ffic

ien

cy

Generated Power Fuji (a-Si/a-SiGe) Generated Power Crystalline (c-Si）Efficiency Fuji（a-Si/a-SiGe） Efficiency Crystalline(c-Si)

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000022224444

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb MarGen

erate

d P

ow

er (

Wh

/day)

/ R

ate

d P

ow

er (

W)

0.00.00.00.00.20.20.20.20.40.40.40.40.60.60.60.6

Gen

erate

d E

ffic

ien

cy/R

ate

d E

ffic

ien

cy

20022002200220022001200120012001 2003200320032003 2004200420042004

Flexible

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Our solar modules still have high power generationin summer though 6.5 years have passed since theywere installed.

Operation record of Fuji Yokosuka Site

Peak power generation 6.2KW

Cumulative power generation 53.5 MW

Period January 1999 to June 20052000200020002000 1 .51 .51 .51 .5

Efficiency　Change

Efficiency　Change

Efficiency　Change

Efficiency　Change

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0000500500500500100010001000100015001500150015002000200020002000

Jan-99Jan-99Jan-99Jan-99 Apr-99Apr-99Apr-99Apr-99 Jul-99Jul-99Jul-99Jul-99 Oct-99Oct-99Oct-99Oct-99 Jan-00Jan-00Jan-00Jan-00 Apr-00Apr-00Apr-00Apr-00 Jul-00Jul-00Jul-00Jul-00 Oct-00Oct-00Oct-00Oct-00 Jan-01Jan-01Jan-01Jan-01 Apr-01Apr-01Apr-01Apr-01 Jul-01Jul-01Jul-01Jul-01 Oct-01Oct-01Oct-01Oct-01 Jan-02Jan-02Jan-02Jan-02 Apr-02Apr-02Apr-02Apr-02 Jul-02Jul-02Jul-02Jul-02 Oct-02Oct-02Oct-02Oct-02 Jan-03Jan-03Jan-03Jan-03 Apr-03Apr-03Apr-03Apr-03 Jul-03Jul-03Jul-03Jul-03 Oct-03Oct-03Oct-03Oct-03 Jan-04Jan-04Jan-04Jan-04 Apr-04Apr-04Apr-04Apr-04 Jul-04Jul-04Jul-04Jul-04 Oct-04Oct-04Oct-04Oct-04 Jan-05Jan-05Jan-05Jan-05 Apr-05Apr-05Apr-05Apr-05Generated　Power[kWh]

Generated　Power[kWh]

Generated　Power[kWh]

Generated　Power[kWh]

-0 .5-0 .5-0 .5-0 .50 .00 .00 .00 .00 .50 .50 .50 .51 .01 .01 .01 .01 .51 .51 .51 .5

Efficiency　Change

Efficiency　Change

Efficiency　Change

Efficiency　Change

Generated AC power

Efficiency change

Applications (1) - Building

Metal roof integrated PVs Metal roof integrated PVs PV mounted on ship’s walls and roofs

Mounted on curved

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BIPV

PV mounted on walls Tile roof integrated PVs Sun shade roofs

Mounted on curved

surfaces

Applications (2) - Awning

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Applications (3) - Mobile Solar Unit

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Portable retractable module 12-15W

Charger/ Louver

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Mobile Application of Solarmodule

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Mounted on Bus Hot Air Balloon

Applications (3): Large roofs

School Gymnasium(1)

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School Gymnasium(1)

Gymnasium(2) Wavy roofs