Abstract

An absolute differential spectral response measurement system for solar cells is presented. The system couples an array of light emitting diodes 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 multifrequency optical excitation and electrical detection. An innovative scheme for providing light bias during each measurement method is discussed.

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

Behrang H. Hamadani, John Roller, Andrew M. Shore, Brian Dougherty, and Howard W. Yoon
Appl. Opt. 53(16) 3565-3573 (2014)

Differential spectral responsivity measurement of photovoltaic detectors with a light-emitting-diode-based integrating sphere source

Ghufron Zaid, Seung-Nam Park, Seongchong Park, and Dong-Hoon Lee
Appl. Opt. 49(35) 6772-6783 (2010)

Absolute spectral responsivity measurements of solar cells by a hybrid optical technique

Behrang H. Hamadani, John Roller, Brian Dougherty, Fiona Persaud, and Howard W. Yoon
Appl. Opt. 52(21) 5184-5193 (2013)

Reconciling LED and monochromator-based measurements of spectral responsivity in solar cells

John Roller and Behrang H. Hamadani
Appl. Opt. 58(22) 6173-6181 (2019)

Spectral response measurement apparatus for large area solar cells

L. Philippe Boivin, Wolfgang Budde, C. X. Dodd, and S. R. Das
Appl. Opt. 25(16) 2715-2719 (1986)