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Fast and Reliable Spectral Response Measurements of PV Cells Using Light Emitting Diodes

Published

Author(s)

Behrang H. Hamadani, John F. Roller, Brian P. Dougherty, Howard W. Yoon

Abstract

We present a measurement system for absolute differential spectral responsivity of solar cells based on high-powered LED arrays coupled to an optical light guide capable of large area illumination. Two different measurement techniques were developed and tested with the same measurement apparatus on a variety of solar cells. The first method is an individual LED lock-in technique that can be performed over a broad frequency range. The second method is based on synchronous multi-frequency optical excitation, called the Fourier transform (FT) technique, using the LEDs and detection with a spectrum analyzer. A scheme for providing light bias using the LEDs during either measurement scheme is discussed.
Proceedings Title
Proceedings of the 39th IEEE Photovoltaics Specialists Conference, June 16-21, 2013, Tampa, FL.
Conference Dates
June 16-21, 2013
Conference Location
Tampa, FL
Conference Title
39th IEEE PV Specialist Conference

Keywords

solar cells, spectral responsivity, light emitting diodes, Fourier transform

Citation

Hamadani, B. , Roller, J. , Dougherty, B. and Yoon, H. (2014), Fast and Reliable Spectral Response Measurements of PV Cells Using Light Emitting Diodes, Proceedings of the 39th IEEE Photovoltaics Specialists Conference, June 16-21, 2013, Tampa, FL., Tampa, FL, [online], https://doi.org/10.1109/PVSC.2013.6744102 (Accessed April 19, 2024)
Created January 1, 2014, Updated November 10, 2018