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

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Author(s): Behrang H. Hamadani; John F. Roller; Brian P. Dougherty; Howard W. Yoon;
Title: Fast and Reliable Spectral Response Measurements of PV Cells Using Light Emitting Diodes
Published: January 01, 2014
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.
Conference: 39th IEEE PV Specialist Conference
Proceedings: Proceedings of the 39th IEEE Photovoltaics Specialists Conference, June 16-21, 2013, Tampa, FL.
Pages: pp. 0073 - 0075
Location: Tampa, FL
Dates: June 16-21, 2013
Keywords: solar cells; spectral responsivity; light emitting diodes; Fourier transform
Research Areas: Energy, Physics, Energy Conversion, Storage, and Transport, Solar, Alternative Energy, Measurements
DOI: http://dx.doi.org/10.1109/PVSC.2013.6744102  (Note: May link to a non-U.S. Government webpage)
PDF version: PDF Document Click here to retrieve PDF version of paper (304KB)