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

Published

January 1, 2014

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

Pub Type

Conferences

Download Paper

https://doi.org/10.1109/PVSC.2013.6744102

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 March 14, 2025)