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Journal of the Optical Society of Korea

Journal of the Optical Society of Korea

| PUBLISHED BY THE OPTICAL SOCIETY OF KOREA

  • Vol. 14, Iss. 4 — Dec. 25, 2010
  • pp: 321–325

Analysis of the Current-voltage Curves of a Cu(In,Ga)Se<sub>2</sub> Thin-film Solar Cell Measured at Different Irradiation Conditions

Kyu-Seok Lee, Yong-Duck Chung, Nae-Man Park, Dae-Hyung Cho, Kyung-Hyun Kim, Je-Ha Kim, Seong-Jun Kim, Yeong-Ho Kim, and Sam-Kyu Noh  »View Author Affiliations


Journal of the Optical Society of Korea, Vol. 14, Issue 4, pp. 321-325 (2010)


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Abstract

We analyze the current density - voltage (J - V) curve of a Cu(In,Ga)<TEX>$Se_2$</TEX> (CIGS) thin-film solar cell measured at different irradiation power densities. For the solar-cell sample investigated in this study, the fill factor and power conversion efficiency decreased as the irradiation power density (IPD) increased in the range of 2 to 5 sun. Characteristic parameters of solar cell including the series resistance (<TEX>$r_s$</TEX>), the shunt resistance (<TEX>$r_{sh}$</TEX>), the photocurrent density (<TEX>$J_L$</TEX>), the saturation current density (<TEX>$J_s$</TEX>) of an ideal diode, and the coefficient (<TEX>$C_s$</TEX>) of the diode current due to electron-hole recombination via ionized traps at the p-n interface are determined from a theoretical fit to the experimental data of the J - V curve using a two-diode model. As IPD increased, both <TEX>$r_s$</TEX> and <TEX>$r_{sh}$</TEX> decreased, but <TEX>$C_s$</TEX> increased.

© 2010 Optical Society of Korea

OCIS Codes
(040.5350) Detectors : Photovoltaic
(310.6845) Thin films : Thin film devices and applications

History
Original Manuscript: October 13, 2010
Revised Manuscript: November 16, 2010
Manuscript Accepted: November 19, 2010
Published: December 25, 2010

Citation
Kyu-Seok Lee, Yong-Duck Chung, Nae-Man Park, Dae-Hyung Cho, Kyung-Hyun Kim, Je-Ha Kim, Seong-Jun Kim, Yeong-Ho Kim, and Sam-Kyu Noh, "Analysis of the Current-voltage Curves of a Cu(In,Ga)Se<sub>2</sub> Thin-film Solar Cell Measured at Different Irradiation Conditions," J. Opt. Soc. Korea 14, 321-325 (2010)
http://www.opticsinfobase.org/josk/abstract.cfm?URI=josk-14-4-321


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