Publication detail

On the determination of silicon solar cell properties via capacitance characteristics

MACKŮ, R. ŠKARVADA, P. KOKTAVÝ, P.

Original Title

On the determination of silicon solar cell properties via capacitance characteristics

English Title

On the determination of silicon solar cell properties via capacitance characteristics

Type

conference paper

Language

en

Original Abstract

Diffusion technology based PN junction silicon solar cells are currently the most widespread solar cell types. Their extremely large junctions (hundreds of cm2) contain lots of defect regions which deteriorate the properties of the whole solar cells. This paper analyses in detail the issue of measuring the reverse-biased PN junction capacity (the barrier capacity) and its applications in non-destructive diagnostics. Relations between the specimen UI curves and noise generated in consequence of local avalanche breakdowns (microplasma noise) will be shown. The capacitance versus reverse voltage plots were measured using the "Auto balancing bridge method", which proved to serve the purpose very well. Thus obtained capacitance versus reverse voltage characteristics provide information on the inhomogeneity nature resulting from local variations of the impurity concentration. Our measurement results have shown that valuable information on the junction, such as, the solar cell P-region acceptor concentration NA, can be obtained via numerical result processing.

English abstract

Diffusion technology based PN junction silicon solar cells are currently the most widespread solar cell types. Their extremely large junctions (hundreds of cm2) contain lots of defect regions which deteriorate the properties of the whole solar cells. This paper analyses in detail the issue of measuring the reverse-biased PN junction capacity (the barrier capacity) and its applications in non-destructive diagnostics. Relations between the specimen UI curves and noise generated in consequence of local avalanche breakdowns (microplasma noise) will be shown. The capacitance versus reverse voltage plots were measured using the "Auto balancing bridge method", which proved to serve the purpose very well. Thus obtained capacitance versus reverse voltage characteristics provide information on the inhomogeneity nature resulting from local variations of the impurity concentration. Our measurement results have shown that valuable information on the junction, such as, the solar cell P-region acceptor concentration NA, can be obtained via numerical result processing.

Keywords

Defects, Capacitance, Silicon Solar Cell

RIV year

2008

Released

01.10.2008

Publisher

WIP-Renewable Energies

Location

Valencia, Spain

ISBN

3-936338-24-8

Book

Proceedings of 23rd European Photovoltaic Solar Energy Conference

Pages from

364

Pages to

369

Pages count

4

BibTex


@inproceedings{BUT27248,
  author="Robert {Macků} and Pavel {Škarvada} and Pavel {Koktavý}",
  title="On the determination of silicon solar cell properties via capacitance characteristics",
  annote="Diffusion technology based PN junction silicon solar cells are currently the most widespread solar cell types. Their extremely large junctions (hundreds of cm2) contain lots of defect regions which deteriorate the properties of the whole solar cells. This paper analyses in detail the issue of measuring the reverse-biased PN junction capacity (the barrier capacity) and its applications in non-destructive diagnostics. Relations between the specimen UI curves and noise generated in consequence of local avalanche breakdowns (microplasma noise) will be shown. The capacitance versus reverse voltage plots were measured using the "Auto balancing bridge method", which proved to serve the purpose very well. Thus obtained capacitance versus reverse voltage characteristics provide information on the inhomogeneity nature resulting from local variations of the impurity concentration. Our measurement results have shown that valuable information on the junction, such as, the solar cell P-region acceptor concentration NA, can be obtained via numerical result processing.",
  address="WIP-Renewable Energies",
  booktitle="Proceedings of 23rd European Photovoltaic Solar Energy Conference",
  chapter="27248",
  howpublished="print",
  institution="WIP-Renewable Energies",
  year="2008",
  month="october",
  pages="364--369",
  publisher="WIP-Renewable Energies",
  type="conference paper"
}