Challenges of Irradiance-mode Spectral Response Measurements

Published

October 16, 2014

Author(s)

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

Abstract

Irradiance-mode spectral response measurements of solar cells are important because they provide a direct, reliable and accurate route for determination of the short circuit current (Isc) of solar cells under air mass 1.5 standard reference spectrum. In this work, a monochromator-based approach was combined with an LED array-operated system based on an integrating sphere design to obtain the irradiance-mode SR curves for a variety of cells, including large-area cells with dimensions up to 155 mm. Challenges associated with these measurements, including light uniformity, collimation issues and light bias effects are discussed. Isc calculations using this approach and intercomparison with other laboratories confirm the accuracy of the outlined methodology.

Conference Dates

June 8-13, 2014

Conference Location

Denver, CO

Conference Title

40th IEEE Photovoltaic Specialists Conference

Pub Type

Conferences

Download Paper

https://doi.org/10.1109/PVSC.2014.6925290

Keywords

solar cells, photovoltaics, measurements, spectral, spectral response, light emitting diodes

Citation

Hamadani, B. , Roller, J. , Dougherty, B. and Yoon, H. (2014), Challenges of Irradiance-mode Spectral Response Measurements, 40th IEEE Photovoltaic Specialists Conference, Denver, CO, [online], https://doi.org/10.1109/PVSC.2014.6925290 (Accessed October 13, 2025)