Cathodoluminescence of exciton recombinations and vibronic color centers in undoped, boron-doped, and nitrogen-doped CVD diamonds

Hiroshi Kawarada; Yoshihiro Yokota; T. Sogi; Hideto Matsuyama; Akio Hiraki

doi:10.1117/12.22454

1 December 1990 Cathodoluminescence of exciton recombinations and vibronic color centers in undoped, boron-doped, and nitrogen-doped CVD diamonds

Hiroshi Kawarada, Yoshihiro Yokota, T. Sogi, Hideto Matsuyama, Akio Hiraki

Author Affiliations +

Proceedings Volume 1325, Diamond Optics III; (1990) https://doi.org/10.1117/12.22454
Event: 34th Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1990, San Diego, CA, United States

Abstract

A variety of cathodoluminescence depending on crystal perfection impurities and defects such as vacancies and interstitials have been investigated in undoped boron-doped and nitrogen-doped CVD diamonds. The free exciton recombination radiation is sensitive to the perfection and purity of diamonds and is located in C100sectors. The bound exciton recombination radiation depends on the amount of boron in diamonds. The 5RL center is strong in the undoped diamonds after neutron irradiation and supposed to be related to intrinsic defects such as seif-interstitials. The 2 . 16 eV and the 3 . 19 eV centers are observed prominently in the nitrogen-doped diamonds after electron irradiation and subsequent annealing. The origins of the 2. 16 center (nitrogen-vacancy complex) are located in sectors. 1.

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Hiroshi Kawarada, Yoshihiro Yokota, T. Sogi, Hideto Matsuyama, and Akio Hiraki "Cathodoluminescence of exciton recombinations and vibronic color centers in undoped, boron-doped, and nitrogen-doped CVD diamonds", Proc. SPIE 1325, Diamond Optics III, (1 December 1990); https://doi.org/10.1117/12.22454

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