Temperature and incident beam-current dependence of dominant free-exciton recombination radiation from high-purity chemical vapor deposition (CVD) diamonds

Akira Yamaguchi; Satoshi Yamashita; Takahiro Tsutsumi; Hiroshi Kawarada

doi:10.1143/JJAP.33.L1063

Temperature and incident beam-current dependence of dominant free-exciton recombination radiation from high-purity chemical vapor deposition (CVD) diamonds

Akira Yamaguchi, Satoshi Yamashita, Takahiro Tsutsumi, Hiroshi Kawarada

School of Fundamental Science and Engineering

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

Dominant free-exciton (FE) recombination radiation has been obtained from high-purity Chemical vapor deposition (CVD) diamond synthesized on Cu substrates by means of microwave plasma CVD using CH₄ + O₂ diluted with H₂. The intensity of FE emission is almost constant between 80 K and 170 K, and is reduced by two orders of magnitude at room temperature. The emission increases in proportion to the incident beam current from 1 × 10^–9 A to 2 × 10^–6 A. The spectrum shapes between 200 nm and 600 nm do not depend on the beam current. In addition, the isotopic effect on the FE emission peak shift has been observed in the spectrum from¹³C-enriched (96.6%) CVD diamond for the first time.

Original language	English
Pages (from-to)	L1063-L1065
Journal	Japanese journal of applied physics
Volume	33
Issue number	8
DOIs	https://doi.org/10.1143/JJAP.33.L1063
Publication status	Published - 1994 Aug

Keywords

C-enriched CVD diamond
Free-exciton recombination radiation
UV-light-emitting

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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10.1143/JJAP.33.L1063

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Temperature and incident beam-current dependence of dominant free-exciton recombination radiation from high-purity chemical vapor deposition (CVD) diamonds. / Yamaguchi, Akira; Yamashita, Satoshi; Tsutsumi, Takahiro et al.
In: Japanese journal of applied physics, Vol. 33, No. 8, 08.1994, p. L1063-L1065.

Research output: Contribution to journal › Article › peer-review

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abstract = "Dominant free-exciton (FE) recombination radiation has been obtained from high-purity Chemical vapor deposition (CVD) diamond synthesized on Cu substrates by means of microwave plasma CVD using CH4 + O2 diluted with H2. The intensity of FE emission is almost constant between 80 K and 170 K, and is reduced by two orders of magnitude at room temperature. The emission increases in proportion to the incident beam current from 1 × 10–9 A to 2 × 10–6 A. The spectrum shapes between 200 nm and 600 nm do not depend on the beam current. In addition, the isotopic effect on the FE emission peak shift has been observed in the spectrum from13C-enriched (96.6%) CVD diamond for the first time.",

keywords = "C-enriched CVD diamond, Free-exciton recombination radiation, UV-light-emitting",

author = "Akira Yamaguchi and Satoshi Yamashita and Takahiro Tsutsumi and Hiroshi Kawarada",

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AU - Yamashita, Satoshi

AU - Tsutsumi, Takahiro

AU - Kawarada, Hiroshi

PY - 1994/8

Y1 - 1994/8

N2 - Dominant free-exciton (FE) recombination radiation has been obtained from high-purity Chemical vapor deposition (CVD) diamond synthesized on Cu substrates by means of microwave plasma CVD using CH4 + O2 diluted with H2. The intensity of FE emission is almost constant between 80 K and 170 K, and is reduced by two orders of magnitude at room temperature. The emission increases in proportion to the incident beam current from 1 × 10–9 A to 2 × 10–6 A. The spectrum shapes between 200 nm and 600 nm do not depend on the beam current. In addition, the isotopic effect on the FE emission peak shift has been observed in the spectrum from13C-enriched (96.6%) CVD diamond for the first time.

AB - Dominant free-exciton (FE) recombination radiation has been obtained from high-purity Chemical vapor deposition (CVD) diamond synthesized on Cu substrates by means of microwave plasma CVD using CH4 + O2 diluted with H2. The intensity of FE emission is almost constant between 80 K and 170 K, and is reduced by two orders of magnitude at room temperature. The emission increases in proportion to the incident beam current from 1 × 10–9 A to 2 × 10–6 A. The spectrum shapes between 200 nm and 600 nm do not depend on the beam current. In addition, the isotopic effect on the FE emission peak shift has been observed in the spectrum from13C-enriched (96.6%) CVD diamond for the first time.

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KW - UV-light-emitting

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Temperature and incident beam-current dependence of dominant free-exciton recombination radiation from high-purity chemical vapor deposition (CVD) diamonds

Abstract

Keywords

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