Effect of Interfacial AsH3 Surge Treatment on GaInP/GaAs Dual-Junction Solar Cells Grown by Metal-Organic Vapor Phase Epitaxy

Kwangwook Park, Seokjin Kang, Hee Choi, Eun Kang, Gun Ju, Jung-Wook Min, Yong Lee, Dong-Seon Lee, Hyo Kim

Research output: Contribution to journalArticlepeer-review

1 Scopus Citations

Abstract

The effect of a modified PH3-to-AsH3 gas switching sequence with an AsH3 surge treatment on GaInP/GaAs dual-junction solar cells was studied. With AsH3 surge treatment, both the material quality with an absence of defects and device performance was preserved, but without it, deterioration in both of these characteristics was observed, which originated in the As/P interface. It was found that defects with an inhomogeneous III-metal composition were formed at the interface and developed into a V-shaped dislocation which penetrated the GaInP top cell. The results suggest that sufficient arsenic supply is necessary prior to As-based material growth on GaInP.
Original languageAmerican English
Number of pages5
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume57
Issue number8
DOIs
StatePublished - 2018

NREL Publication Number

  • NREL/JA-5K00-72254

Keywords

  • defects
  • organometallics
  • semiconductor alloys
  • solar cells
  • vanadium alloys

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