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:
© 2017 IEEE.
PY - 2017
Y1 - 2017
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.
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U2 - 10.1109/PVSC.2017.8366828
DO - 10.1109/PVSC.2017.8366828
M3 - Conference contribution
AN - SCOPUS:85048492325
T3 - 2017 IEEE 44th Photovoltaic Specialist Conference, PVSC 2017
SP - 1
EP - 5
BT - 2017 IEEE 44th Photovoltaic Specialist Conference, PVSC 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 44th IEEE Photovoltaic Specialist Conference, PVSC 2017
Y2 - 25 June 2017 through 30 June 2017
ER -