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2016 ; 113
(51
): E8210-E8218
Nephropedia Template TP
gab.com Text
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English Wikipedia
Concentrator photovoltaic module architectures with capabilities for capture and
conversion of full global solar radiation
#MMPMID27930331
Lee KT
; Yao Y
; He J
; Fisher B
; Sheng X
; Lumb M
; Xu L
; Anderson MA
; Scheiman D
; Han S
; Kang Y
; Gumus A
; Bahabry RR
; Lee JW
; Paik U
; Bronstein ND
; Alivisatos AP
; Meitl M
; Burroughs S
; Hussain MM
; Lee JC
; Nuzzo RG
; Rogers JA
Proc Natl Acad Sci U S A
2016[Dec]; 113
(51
): E8210-E8218
PMID27930331
show ga
Emerging classes of concentrator photovoltaic (CPV) modules reach efficiencies
that are far greater than those of even the highest performance flat-plate PV
technologies, with architectures that have the potential to provide the lowest
cost of energy in locations with high direct normal irradiance (DNI). A
disadvantage is their inability to effectively use diffuse sunlight, thereby
constraining widespread geographic deployment and limiting performance even under
the most favorable DNI conditions. This study introduces a module design that
integrates capabilities in flat-plate PV directly with the most sophisticated CPV
technologies, for capture of both direct and diffuse sunlight, thereby achieving
efficiency in PV conversion of the global solar radiation. Specific examples of
this scheme exploit commodity silicon (Si) cells integrated with two different
CPV module designs, where they capture light that is not efficiently directed by
the concentrator optics onto large-scale arrays of miniature multijunction (MJ)
solar cells that use advanced III-V semiconductor technologies. In this CPV(+)
scheme ("+" denotes the addition of diffuse collector), the Si and MJ cells
operate independently on indirect and direct solar radiation, respectively.
On-sun experimental studies of CPV(+) modules at latitudes of 35.9886° N (Durham,
NC), 40.1125° N (Bondville, IL), and 38.9072° N (Washington, DC) show
improvements in absolute module efficiencies of between 1.02% and 8.45% over
values obtained using otherwise similar CPV modules, depending on weather
conditions. These concepts have the potential to expand the geographic reach and
improve the cost-effectiveness of the highest efficiency forms of PV power
generation.