論文

2007年

Modulation spectroscopic investigation on lattice polarity of gallium nitride

Applied Physics Letters
  • Ryuji Katayama
  • ,
  • Kentaro Onabe
  • ,
  • Hiroyuki Yaguchi
  • ,
  • Tomonori Matsushita
  • ,
  • Takashi Kondo

91
6
記述言語
掲載種別
研究論文(学術雑誌)
DOI
10.1063/1.2764115

A lattice polarity determination method for GaN is demonstrated, which is based on a capability of modulation spectroscopy for the assignment of electric-field directions performed nondestructively using simple optical setups. A strong spontaneous polarization induces an upward band bending toward +c surfaces and a downward but weaker bending toward -c surfaces for typical films with small residual strains and electron densities. This difference is distinguishable in terms of the spectral-phase flip, utilizing photoreflectance, and electroreflectance. Quantitative analysis revealed the exciton dissociation at a high-field region of +c surfaces consistent with the band profile derived as a solution of Poisson equation. © 2007 American Institute of Physics.

リンク情報
DOI
https://doi.org/10.1063/1.2764115
Scopus
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=34547842633&origin=inward
Scopus Citedby
https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=34547842633&origin=inward
ID情報
  • DOI : 10.1063/1.2764115
  • ISSN : 0003-6951
  • SCOPUS ID : 34547842633

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