Cathodoluminescence, Absorption And Raman Spectra Of Individual Particles And Polished Films Of Vapor Deposited Diamond

Mutsukazu Kamo; Yoichiro Sato; Alan T. Collins

doi:10.1117/12.962075

15 January 1989 Cathodoluminescence, Absorption And Raman Spectra Of Individual Particles And Polished Films Of Vapor Deposited Diamond

Mutsukazu Kamo, Yoichiro Sato, Alan T. Collins

Author Affiliations +

Proceedings Volume 1146, Diamond Optics II; (1989) https://doi.org/10.1117/12.962075
Event: 33rd Annual Technical Symposium, 1989, San Diego, United States

Abstract

Cathodoluminescence, absorption and Raman spectra of diamond particles and polycrystalline films prepared by a microwave plasma method from gaseous mixtures of methane and hydrogen have been studied. The results are discussed in relation to the effect of the methane concentration on the optical properties of the diamond material produced. Absorption edge at 5.5eV was observed for the polished film prepared at 0.3% methane concentration, and for particles prepared at 1% methane concentration containing water vapor. Edge emission in the cathodoluminescence spectra was observed for particles obtained at methane concentrations from 0.5 to 2%, while the emission was not observed in the films obtained at the same conditions. The edge emission became weaker with increasing methane concentration. The results indicate that the particles prepared at lower methane concentrations are high quality diamond similar to type IIa diamond, the purest form of natural diamond, while the films are heavily strained.

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Mutsukazu Kamo, Yoichiro Sato, and Alan T. Collins "Cathodoluminescence, Absorption And Raman Spectra Of Individual Particles And Polished Films Of Vapor Deposited Diamond", Proc. SPIE 1146, Diamond Optics II, (15 January 1989); https://doi.org/10.1117/12.962075

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