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|Author(s):||Behrang H. Hamadani; John F. Roller; Brian P. Dougherty; Howard W. Yoon;|
|Title:||A versatile light-emitting-diode-based spectral response measurement system for photovoltaic device characterization|
|Published:||June 29, 2012|
|Abstract:||An absolute differential spectral response measurement system for solar cells is presented. The system couples an array of light emitting diodes (LEDs) with an optical waveguide to provide large area illumination. Two unique yet complementary measurement methods were developed and tested with the same measurement apparatus. Good agreement was observed between the two methods based on testing of a variety of solar cells. The first method is a lock-in technique that can be performed over a broad pulse frequency range, The second method is based on synchronous multi-frequency optical excitation and electrical detection. An innovative scheme for providing light bias during each measurement method is discussed.|
|Keywords:||Solar, Solar cells, Photovoltaic, PV, LEDs, Light Emitting Diodes, Spectral response, characterization, instrumentation,|
|Research Areas:||Energy Efficiency, Electrical Metrology, Instrumentation, Measurement Needs, Optical Physics, Spectroradiometry, Energy, Solar, Detector Metrology|
|PDF version:||Click here to retrieve PDF version of paper (679KB)|