Improved Performance and Spectral Features of Complex Porous Silicon Structure Containing Silicon Solar Cells

• Authors: E. Shatkovskis , R. Mitkevičius , V. Zagadskij , J. Stupakova
• Languages of publication: EN

Abstracts

EN

This work presents porous silicon technology, adapted to improve the characteristics of monocrystalline silicon solar cell. This is achieved by taking advantage of properties provided by porous silicon technology in production of diverse structures in the material. We produce a porous silicon derivative, which is mostly hidden in the emitter of solar cell. Research of the initial and modified solar cells was made by measuring current-voltage characteristics under illumination of a 5000 K xenon lamp. Spectrally resolved studies of current-voltage characteristics were carried out using radiation of halogen lamps and diffraction grating monochromator. Studies revealed that the manufacturing of buried porous silicon structure improves solar cell performance by increasing the fill factor of the modified solar cell current-voltage characteristics, maximum output power and efficiency, when compared to unmodified ones. Spectral studies revealed that the above-mentioned improvement differs for various sections of light spectrum. Largest relative enhancement of solar cell current was observed at the wavelengths of Δ λ = 450-550 nm. We consider the cumulative result of several effects resulting in solar cell efficiency enhancement. Most of them were the influence of porosity on effective optical path length and better anti-reflecting properties of multiple porous structures.

Keywords

EN

61.43.Gt; 68.37.Hk; 72.40.+w

Discipline

• 61.43.Gt: Powders, porous materials
• 68.37.Hk: Scanning electron microscopy (SEM) (including EBIC)
• 72.40.+w: Photoconduction and photovoltaic effects

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 122
• Issue: 6
• Pages: 1121-1124

Dates

published

2012-12

Contributors

author

E. Shatkovskis

• Vilnius Gediminas Technical University, Sauletekio all. 11, Vilnius LT 10223, Lithuania

author

R. Mitkevičius

• Vilnius Gediminas Technical University, Sauletekio all. 11, Vilnius LT 10223, Lithuania

author

V. Zagadskij

• Vilnius Gediminas Technical University, Sauletekio all. 11, Vilnius LT 10223, Lithuania

author

J. Stupakova

• Vilnius Gediminas Technical University, Sauletekio all. 11, Vilnius LT 10223, Lithuania

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Identifiers

DOI

10.12693/APhysPolA.122.1121