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Determining spectral response of a photovoltaic device using polychromatic filters

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posted on 2014-11-19, 13:40 authored by Ira D. Sara, Tom BettsTom Betts, Ralph Gottschalg
This study introduces a new method for determining the spectral response of a photovoltaic (PV) device. Instead of illuminating the PV device under test with monochromatic beams at different wavelengths, the device is irradiated with different broadband spectra. Variations in the spectra are made by employing different types of polychromatic filters. The advantage of using these types of filters is the increase in the light intensity incident on the measurement plane, compared with narrowband filtered light. As a consequence, the spectral response measurement setup becomes very simple, comprising only a light source, a set of polychromatic filters, spectroradiometer and source-meter unit. The spectral response is determined by fitting the short-circuit currents measured under different spectra to a chosen spectral response model. The proposed method is verified by comparing the results to spectral response curves measured with a traditional monochromatic method, which show excellent agreement. From this analysis, it can be concluded that the proposed method is feasible as a new technique for determining the spectral response of a PV device.

Funding

This work has been supported by a joint UK-India initiative in solar energy through a joint project ‘Stability and Performance of Photovoltaics (STAPP)’ funded by the Research Councils UK (RCUK) Energy Programme in the UK [grant no: EP/H040331/1] and by the Department of Science and Technology (DST) in India.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

IET RENEWABLE POWER GENERATION

Volume

8

Issue

5

Pages

467 - 473 (7)

Citation

SARA, I.D., BETTS, T.R. and GOTTSCHALG, R., 2014. Determining spectral response of a photovoltaic device using polychromatic filters. IET Renewable Power Generation, 8 (5), pp. 467 - 473.

Publisher

© The Institution of Engineering and Technology (IET)

Version

  • VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution 3.0 Unported (CC BY 3.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/by/3.0/

Publication date

2014

Notes

This is an Open Access Article. It is published by IET under the Creative Commons Attribution 3.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/3.0/

ISSN

1752-1416

Language

  • en

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