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Experimental Analysis of the Light Wavelength’s Impact on the Performance of a Silicon Solar Cell

Author

Listed:
  • Catarina Pinho Correia Valério Bernardo

    (Department of Electrical and Computer Engineering, Instituto Superior Técnico, 1049-001 Lisbon, Portugal
    Instituto de Telecomunicações, 1049-001 Lisbon, Portugal)

  • Ricardo A. Marques Lameirinhas

    (Department of Electrical and Computer Engineering, Instituto Superior Técnico, 1049-001 Lisbon, Portugal
    Instituto de Telecomunicações, 1049-001 Lisbon, Portugal)

  • João Paulo N. Torres

    (Instituto de Telecomunicações, 1049-001 Lisbon, Portugal
    Academia Militar/CINAMIL, Av. Conde Castro Guimarães, 2720-113 Amadora, Portugal)

  • António Baptista

    (Department of Electrical and Computer Engineering, Instituto Superior Técnico, 1049-001 Lisbon, Portugal)

  • Maria João Marques Martins

    (Academia Militar/CINAMIL, Av. Conde Castro Guimarães, 2720-113 Amadora, Portugal)

Abstract

The main aim of this article is to analyse the Si solar cell’s behaviour when it is exposed to light of different colours. An experimental work, with 100 experimental tests, was carried out, using an RGB LED. In order to obtain better fitting of the characteristic curves’ results, we used a novel discrete model, d1MxP. The obtained results showed that all experimental points of the tests were inside the two triangles that connected the three theoretical primary colours and the three experimental primary colours in the chromaticity diagram. With this diagram, the colour purity could be determined, which presented values between 20% and 60%. The primary colours of the three different LEDs of the light source presented a dominant wavelength that corresponded to the peak wavelengths of the light source spectrum, which showed high purity. However, the obtained results show that mixing colours may not lead to an increase in the cell’s output power. Additionally, an increase in the cell’s temperature was observed, due to the surplus absorbed energy, which was converted into heat, being one of the causes of the cell’s efficiency reduction.

Suggested Citation

  • Catarina Pinho Correia Valério Bernardo & Ricardo A. Marques Lameirinhas & João Paulo N. Torres & António Baptista & Maria João Marques Martins, 2024. "Experimental Analysis of the Light Wavelength’s Impact on the Performance of a Silicon Solar Cell," Energies, MDPI, vol. 17(9), pages 1-20, April.
  • Handle: RePEc:gam:jeners:v:17:y:2024:i:9:p:2090-:d:1384130
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    References listed on IDEAS

    as
    1. João Paulo N. Torres & Ricardo A. Marques Lameirinhas & Catarina P. Correia V. Bernardo & Helena Isabel Veiga & Pedro Mendonça dos Santos, 2023. "A Discrete Electrical Model for Photovoltaic Solar Cells—d1MxP," Energies, MDPI, vol. 16(4), pages 1-14, February.
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