TY - GEN
T1 - Measurement and analysis of algorithmically-designed diffractive optic for photovoltaic spectrum splitting
AU - Vorndran, Shelby D.
AU - Johnson, Lee
AU - Milster, Tom
AU - Kostuk, Raymond K.
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/11/18
Y1 - 2016/11/18
N2 - Using a multi-wavelength expansion of the Gerchberg-Saxton algorithm, a surface relief diffractive optical element (DOE) is designed, fabricated, and measured. Spectrum splitting capability of the designed DOE is 76.29% of an ideal rectangular spectral filter under plane wave illumination. The DOE is fabricated using grayscale lithography and measured under a solar simulator lamp. The spectral distribution of light across the PV plane is measured using a scanning spectrometer. Simulated 2-bandgap conversion efficiency for ideal silicon and indium gallium phosphide PV cells in this system is 31.61%, while conversion efficiency based on the measured DOE is 28.98%. The difference between simulated and measured results is based on several factors, including discrete Fourier analysis, divergent illumination, and fabrication error.
AB - Using a multi-wavelength expansion of the Gerchberg-Saxton algorithm, a surface relief diffractive optical element (DOE) is designed, fabricated, and measured. Spectrum splitting capability of the designed DOE is 76.29% of an ideal rectangular spectral filter under plane wave illumination. The DOE is fabricated using grayscale lithography and measured under a solar simulator lamp. The spectral distribution of light across the PV plane is measured using a scanning spectrometer. Simulated 2-bandgap conversion efficiency for ideal silicon and indium gallium phosphide PV cells in this system is 31.61%, while conversion efficiency based on the measured DOE is 28.98%. The difference between simulated and measured results is based on several factors, including discrete Fourier analysis, divergent illumination, and fabrication error.
UR - http://www.scopus.com/inward/record.url?scp=85003443747&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85003443747&partnerID=8YFLogxK
U2 - 10.1109/PVSC.2016.7750323
DO - 10.1109/PVSC.2016.7750323
M3 - Conference contribution
AN - SCOPUS:85003443747
T3 - Conference Record of the IEEE Photovoltaic Specialists Conference
SP - 3513
EP - 3517
BT - 2016 IEEE 43rd Photovoltaic Specialists Conference, PVSC 2016
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 43rd IEEE Photovoltaic Specialists Conference, PVSC 2016
Y2 - 5 June 2016 through 10 June 2016
ER -