10-05-2012, 12:43 PM
Solar Photovoltaics
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PV Technology Classification
Silicon Crystalline Technology Thin Film Technology
Mono Crystalline PV Cells Amorphous Silicon PV Cells
Multi Crystalline PV Cells Poly Crystalline PV Cells
( Non-Silicon based)
Thin Film Technology
Silicon deposited in a continuous on a base material such as glass, metal or polymers
Thin-film crystalline solar cell consists of layers about 10μm thick compared with 200-300μm layers for crystalline silicon cells
Poly Crystalline PV Cells
CIS with band gap 1eV, high absorption coefficient 105cm-1
High efficiency levels
PROS
18% laboratory efficiency
>11% module efficiency
CONS
Immature manufacturing process
Slow vacuum process