Minority-carrier injection-enhanced recovery of radiation-induced defects in n+p AllnGaP solar cells

Hae Seo K. Lee, Masafumi Yamaguchi, Nicholas J. Ekins-Daukes, Aurangzeb Khan, Tatsuya Takamoto, Mitsuru Imaizumi, Takeshi Ohshima, Hisayoshi Ltoh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The recovery of defects introduced in n+/p AllnGaP solar cells under the 1 MeV electron / 30keV proton irradiation by the minority-carrier injection-enhanced annealing is presented here. As a forward bias injection (100mA/cm2) time increases, DLTS signal of H1 and H2 defects, which are introduced by the 1 MeV electron irradiation, decreases, indicating that they are annealed out due to nonradiative electron-hole recombination enhanced process. The activation energy ΔE for the recovery of defect centers (H 1 and H2) by the injection was 0.50eV and 0.60eV, respectively. Under the 30keV proton irradiation, HP1 and HP2 defect centers were produced, and the annealing activation energy of AllnGaP solar cells obtained from the injection (1 A/cm2) was 0.42eV.

Original languageEnglish
Title of host publicationConference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4
PublisherIEEE Computer Society
Pages1826-1829
Number of pages4
ISBN (Print)1424400163, 9781424400164
DOIs
Publication statusPublished - 2006
Externally publishedYes
Event2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4 - Waikoloa, HI, United States
Duration: 2006 May 72006 May 12

Publication series

NameConference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4
Volume2

Other

Other2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4
CountryUnited States
CityWaikoloa, HI
Period06/5/706/5/12

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry

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    Lee, H. S. K., Yamaguchi, M., Ekins-Daukes, N. J., Khan, A., Takamoto, T., Imaizumi, M., Ohshima, T., & Ltoh, H. (2006). Minority-carrier injection-enhanced recovery of radiation-induced defects in n+p AllnGaP solar cells. In Conference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4 (pp. 1826-1829). [4060014] (Conference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4; Vol. 2). IEEE Computer Society. https://doi.org/10.1109/WCPEC.2006.279848