Thin Film Solar Cells

DSSC Dye Requirements

LUMO>Ec of photoelectrode, good adhesion to photoelectrode

DSSC Semiconductor Requirements

high specific surface area, good affinity to dye, poor interactions with I

CIGS Advantages

bandgap tuning with In/Ga ratio, does not require high purity semiconductor

CIGS Disadvantages

toxic Cd, high vacuum manufacturing process, rare elements

CdTe Advantages

simplified and cost-effective manufacturing process, wide absorption spectrum

CdTe Disadvantages

toxic Cd, fast degrecation

a-Si:H Advantages

cheap and easy manufacture, higher absorption than crystaline

a-Si:H Disadvantages

high degradation, difficult to achieve uniform electric field.