Observation of a new in-situ optical monitoring signal with monolayer resolution in metalorganic molecular beam epitaxy and metalorganic vapor phase epitaxy of wide-gap II-VI compounds

Akihiko Yoshikawa, Masakazu Kobayashi, Shigeru Tokita

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A new in-situ optical probing method for studying surface reactions during heteroepitaxial growth is proposed. The new method is named surface photo-interference (SPI), because the concept of the SPI is essentially concerned with a photo-interference in the heteroepilayer. The experimental setup of the method is very similar to another optical probing method called surface photo-absorption (SPA), but the principle is quite different between the two. Unlike SPA, fairly low energy photons that are transparent for the epilayer can also be used in SPI as a probing light. Reflecting this feature, SPI is especially useful for studying growth kinetics in heteroepitaxial growth of widegap II-VI compounds, because the effect of photocatalytic growth-rate enhancement can be avoided when using such low energy photons as a probing light. A brief theoretical description of SPI signal is given, and experimental results detected in metalorganic molecular beam energy (MOMBE) of ZnSe and CdSe are mainly discussed. Further, how SPI differs from SPA will be shown.

Original languageEnglish
Pages (from-to)68-73
Number of pages6
JournalJournal of Crystal Growth
Volume145
Issue number1-4
DOIs
Publication statusPublished - 1994 Dec 2

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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