The
US
site
marks
the
latest
test
of
lens-enhanced
“III-V”
CPV
technology
being
developed
by
Concentrix,
a
spin-off
from
German
solar
research
institute
Fraunhofer
ISE,
that
has
demonstrated
in-field
efficiencies
of
over
28%,
roughly
twice
as
high
as
conventional
silicon
PV
installations.
At
the
heart
of
the
design
is
a
“space
standard”
triple-junction
PV
cell
made
up
of
stacked
layers
of
gallium
indium
phosphide
(GaInP),
gallium
arsenide
(GaAs)
and
germanium.
Each
semiconductor
layer
captures
a
different
slice
of
the
solar
spectrum
—
short-wave
radiation,
medium-wave
radiation
and
infrared
—
that
together…
