분야
pptStructure3.Fabrication
4. Solar Cell Market
single -> wood [lumber]
Poly -> veneer board
High efficiency,
no matter where work
Due to indirect band gap,
optical absortion rate is very low
Single crystalline solar cell
Single crystalline
Classification Single crystalline
Degree of purity high
Defect density low
Efficiency High
Maximum limits of efficiency 35%
Process Method of Czochralski
Floating-zone technique
Price Expensiveness(2.96$)
Classification of single srystalline solar cell
2. Structure
1) PESC [Passivated Emitter Solar Cell]
light absorption surface
– Inverted pyramids structure, double
reflection prevention layer
front – oxide passivation, electrode
passivation by narrow elctrode area
rear – Al deposition, form p+ layer
electrode
open circuit voltage - below 670 mV
