Large-area irradiance-mode spectral response measurements of solar cells by a light-emitting-diode- based integrating sphere source

Published

May 30, 2014

Author(s)

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

Abstract

An irradiance-mode absolute differential spectral response measurement system based on a light emitting diode (LED) array is described. The LEDs are coupled to an integrating sphere whose output irradiance is uniform to better than 2 % over an area of 160 mm by 160 mm. Diffuse irradiation of solar cells by the sphere is compared with collimated irradiance measurements, and issues originating from the differences in angular response of the reference and the test cells are further investigated. Large-area cells with dimensions of up to 155 mm are measured and the short circuit current (Isc) of the cells under the AM 1.5 standard reference spectrum is calculated and is shown to have good agreement with the secondary calibration measurements.

Citation

Applied Optics

Volume

53

Issue

16

Pub Type

Journals

Download Paper

https://doi.org/10.1364/AO.53.003565

Keywords

photovoltaics, solar cell, measurements, physics, light emitting diodes, integrating sphere

Citation

Hamadani, B. , Roller, J. , Shore, A. , Dougherty, B. and Yoon, H. (2014), Large-area irradiance-mode spectral response measurements of solar cells by a light-emitting-diode- based integrating sphere source, Applied Optics, [online], https://doi.org/10.1364/AO.53.003565 (Accessed October 13, 2025)