Impact of spectral effects on the electrical parameters of multijunction amorphous silicon cells

T.R. Betts, C.N. Jardine, R. Gottschalg, D.G. Infield, K. Lane

Research output: Contribution to conferencePaper

26 Citations (Scopus)

Abstract

The influence of spectral variation on the efficiency of single-, double- and triple-junction amorphous silicon cells has been investigated. The average photon energy (APE) proves to be a useful device-independent environmental parameter for quantifying the average hue of incident spectra. Single-junction devices increase in efficiency as light becomes blue shifted, because more of the incident spectrum lies within the absorption window and less in the red/infra-red tail; this is denoted the primary spectral effect. Double- and triple-junction devices also exhibit a secondary spectral effect due to mismatch between the device structure and the incident spectrum. These both reach a maximum efficiency, which drops off as light is red or blue shifted. The effect is more pronounced for triple-junction than double-junction devices, as mismatch between junctions is statistically more likely.
LanguageEnglish
Pages1756-1759
Number of pages4
Publication statusPublished - May 2003
Event3rd World Conference on Photovoltaic Energy Conversion - Osaka, Japan
Duration: 11 May 200318 May 2003

Conference

Conference3rd World Conference on Photovoltaic Energy Conversion
CountryJapan
CityOsaka
Period11/05/0318/05/03

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amorphous silicon
cells
photons
energy

Keywords

  • impact
  • spectral effects
  • electrical parameters
  • multijunction
  • amorphous silicon cells
  • amorphous semiconductors
  • ultraviolet spectra
  • spectral line shift
  • solar cells
  • silicon
  • photoconductivity
  • elemental semiconductors

Cite this

Betts, T. R., Jardine, C. N., Gottschalg, R., Infield, D. G., & Lane, K. (2003). Impact of spectral effects on the electrical parameters of multijunction amorphous silicon cells. 1756-1759. Paper presented at 3rd World Conference on Photovoltaic Energy Conversion, Osaka, Japan.
Betts, T.R. ; Jardine, C.N. ; Gottschalg, R. ; Infield, D.G. ; Lane, K. / Impact of spectral effects on the electrical parameters of multijunction amorphous silicon cells. Paper presented at 3rd World Conference on Photovoltaic Energy Conversion, Osaka, Japan.4 p.
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Betts, TR, Jardine, CN, Gottschalg, R, Infield, DG & Lane, K 2003, 'Impact of spectral effects on the electrical parameters of multijunction amorphous silicon cells' Paper presented at 3rd World Conference on Photovoltaic Energy Conversion, Osaka, Japan, 11/05/03 - 18/05/03, pp. 1756-1759.

Impact of spectral effects on the electrical parameters of multijunction amorphous silicon cells. / Betts, T.R.; Jardine, C.N.; Gottschalg, R.; Infield, D.G.; Lane, K.

2003. 1756-1759 Paper presented at 3rd World Conference on Photovoltaic Energy Conversion, Osaka, Japan.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Impact of spectral effects on the electrical parameters of multijunction amorphous silicon cells

AU - Betts, T.R.

AU - Jardine, C.N.

AU - Gottschalg, R.

AU - Infield, D.G.

AU - Lane, K.

PY - 2003/5

Y1 - 2003/5

N2 - The influence of spectral variation on the efficiency of single-, double- and triple-junction amorphous silicon cells has been investigated. The average photon energy (APE) proves to be a useful device-independent environmental parameter for quantifying the average hue of incident spectra. Single-junction devices increase in efficiency as light becomes blue shifted, because more of the incident spectrum lies within the absorption window and less in the red/infra-red tail; this is denoted the primary spectral effect. Double- and triple-junction devices also exhibit a secondary spectral effect due to mismatch between the device structure and the incident spectrum. These both reach a maximum efficiency, which drops off as light is red or blue shifted. The effect is more pronounced for triple-junction than double-junction devices, as mismatch between junctions is statistically more likely.

AB - The influence of spectral variation on the efficiency of single-, double- and triple-junction amorphous silicon cells has been investigated. The average photon energy (APE) proves to be a useful device-independent environmental parameter for quantifying the average hue of incident spectra. Single-junction devices increase in efficiency as light becomes blue shifted, because more of the incident spectrum lies within the absorption window and less in the red/infra-red tail; this is denoted the primary spectral effect. Double- and triple-junction devices also exhibit a secondary spectral effect due to mismatch between the device structure and the incident spectrum. These both reach a maximum efficiency, which drops off as light is red or blue shifted. The effect is more pronounced for triple-junction than double-junction devices, as mismatch between junctions is statistically more likely.

KW - impact

KW - spectral effects

KW - electrical parameters

KW - multijunction

KW - amorphous silicon cells

KW - amorphous semiconductors

KW - ultraviolet spectra

KW - spectral line shift

KW - solar cells

KW - silicon

KW - photoconductivity

KW - elemental semiconductors

M3 - Paper

SP - 1756

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ER -

Betts TR, Jardine CN, Gottschalg R, Infield DG, Lane K. Impact of spectral effects on the electrical parameters of multijunction amorphous silicon cells. 2003. Paper presented at 3rd World Conference on Photovoltaic Energy Conversion, Osaka, Japan.