TY - JOUR
T1 - Development and testing of low spatial frequency holographic concentrator elements for collection of solar energy
AU - Akbari, Hoda
AU - Naydenova, Izabela
AU - Ahmed, Hind
AU - McCormack, Sarah
AU - Martin, Suzanne
N1 - Publisher Copyright:
© 2017
PY - 2017
Y1 - 2017
N2 - The aim of this research is to use holographically recorded diffractive optical elements (DOEs) recorded in photopolymer in order to effectively collect and concentrate solar radiation. The potential for recording high diffraction efficiency DOEs with a large angular and wavelength range of operation in acrylamide based photopolymer and the optimum recording conditions have been presented in our previous work (Akbari et al., 2014b, 2014a). Theoretical modelling and experimental test are presented which demonstrate that low spatial frequency components, around 300 line pairs/mm, have an appropriate spectral bandwidth, high efficiency and very limited polarization dependence. Pairs of concentrating off-axis lenses are fabricated in photopolymer and arranged to concentrate light on a c-Si cell. The optical recording process is described and discussed. The results from electrical characterization confirm that with the (two) spherical DOEs (each of area 113 mm2) in place, the output current of c-Si solar cells is approximately doubled for the solar cells with area of 12 mm2.
AB - The aim of this research is to use holographically recorded diffractive optical elements (DOEs) recorded in photopolymer in order to effectively collect and concentrate solar radiation. The potential for recording high diffraction efficiency DOEs with a large angular and wavelength range of operation in acrylamide based photopolymer and the optimum recording conditions have been presented in our previous work (Akbari et al., 2014b, 2014a). Theoretical modelling and experimental test are presented which demonstrate that low spatial frequency components, around 300 line pairs/mm, have an appropriate spectral bandwidth, high efficiency and very limited polarization dependence. Pairs of concentrating off-axis lenses are fabricated in photopolymer and arranged to concentrate light on a c-Si cell. The optical recording process is described and discussed. The results from electrical characterization confirm that with the (two) spherical DOEs (each of area 113 mm2) in place, the output current of c-Si solar cells is approximately doubled for the solar cells with area of 12 mm2.
KW - Acrylamide based photopolymer
KW - Crystalline Silicon (c-Si) solar cells
KW - Diffractive optical elements
KW - Holographic concentrators
KW - Low spatial frequency
KW - Polarization
KW - Transmission gratings
UR - http://www.scopus.com/inward/record.url?scp=85020860858&partnerID=8YFLogxK
U2 - 10.1016/j.solener.2017.04.067
DO - 10.1016/j.solener.2017.04.067
M3 - Article
AN - SCOPUS:85020860858
SN - 0038-092X
VL - 155
SP - 103
EP - 109
JO - Solar Energy
JF - Solar Energy
ER -