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Extremely Thin Absorber Solar Cell

The extremely-thin absorber cell
uses nano-or microstructured
substrates to implement extremely
thin absorbers in photovoltaics.
Thin absorbers reduce the path
length of excited electrons and
holes. The structured substrates
permit for improved optical
absorption.
(collaboration with K. Ernst
and A. Belaidi)

A first approach to the eta-cell
concept involved a 150nm thick
CdTe absorber on nano-porous
TiO₂substrates. This cell gave
0.7 V as open- circuit voltage and
8.7 mA/cm² short-circuit current.
Alloying with Hg recently
improved the cell current to 15
mA/cm².

....publications

Portland State University - Physics Department

The extremely-thin absorber cell uses nano-or microstructured substrates to implement extremely thin absorbers in photovoltaics. Thin absorbers reduce the path length of excited electrons and holes. The structured substrates permit for improved optical absorption. (collaboration with K. Ernst and A. Belaidi)
A first approach to the eta-cell concept involved a 150nm thick CdTe absorber on nano-porous TiO₂substrates. This cell gave 0.7 V as open- circuit voltage and 8.7 mA/cm² short-circuit current. Alloying with Hg recently improved the cell current to 15 mA/cm².	....publications