Thermal conductivity of single-crystal CVD diamond lightly doped (about 3 ppm) with nitrogen has been measured at temperatures from 5.7 to 410 K. The sample was carefully characterized by optical absorption and photoluminescence spectroscopy for the presence of impurities. Nine different optically active defects related with nitrogen, hydrogen, and silicon impurities have been identified and quantified. This pink-tint crystal showed a high thermal conductivity of W cm K at room temperature, which is very close to the highest value ever measured at about 25 W cm K for diamonds of natural isotopic composition. At the same time, the of the crystal showed strong suppression % at temperatures K with a maximum decrease of 2.7 times at K compared to high purity diamonds. This behavior of the conductivity is attributed to a phonon scattering by charge carriers bound to nitrogen-related impurity centers, which is ineffective, however, at room and higher temperatures. The has been calculated within the model based on the Callaway theory taking into account the elastic phonon scattering off charge carriers (holes and electrons) in the ground states of doping centers, and a very good agreement between the measured and theoretical data has been achieved. The model also gives a good approximation to the experimental data for given in the literature for synthetic and natural single-crystal diamonds.
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14 January 2023
Research Article|
January 10 2023
Thermal conductivity of pink CVD diamond: Influence of nitrogen-related centers
A. V. Inyushkin
;
A. V. Inyushkin
a)
(Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Software, Validation, Visualization, Writing – original draft)
1
National Research Center Kurchatov Institute
, Moscow 123182, Russia
a)Author to whom correspondence should be addressed: [email protected]
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A. N. Taldenkov
;
A. N. Taldenkov
(Data curation, Formal analysis, Investigation, Methodology, Resources)
1
National Research Center Kurchatov Institute
, Moscow 123182, Russia
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V. G. Ralchenko
;
V. G. Ralchenko
b)
(Conceptualization, Data curation, Funding acquisition, Project administration, Resources, Validation, Writing – original draft, Writing – review & editing)
2
Prokhorov Institute of General Physics of Russian Academy of Science
, Moscow 119991, Russia
3
National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology
, Harbin 150080, People’s Republic of China
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Guoyang Shu;
Guoyang Shu
(Formal analysis, Investigation, Visualization)
3
National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology
, Harbin 150080, People’s Republic of China
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Bing Dai
;
Bing Dai
(Investigation, Project administration, Resources)
3
National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology
, Harbin 150080, People’s Republic of China
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A. P. Bolshakov
;
A. P. Bolshakov
(Investigation, Methodology, Validation)
2
Prokhorov Institute of General Physics of Russian Academy of Science
, Moscow 119991, Russia
3
National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology
, Harbin 150080, People’s Republic of China
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A. A. Khomich
;
A. A. Khomich
(Formal analysis, Investigation, Methodology, Validation)
2
Prokhorov Institute of General Physics of Russian Academy of Science
, Moscow 119991, Russia
4
Kotel’nikov Institute of Radio Engineering and Electronics of Russian Academy of Science
, Fryazino 141120, Russia
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E. E. Ashkinazi
;
E. E. Ashkinazi
(Investigation, Resources)
2
Prokhorov Institute of General Physics of Russian Academy of Science
, Moscow 119991, Russia
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K. N. Boldyrev
;
K. N. Boldyrev
(Formal analysis, Investigation, Resources)
5
Institute of Spectroscopy of Russian Academy of Science
, Troitsk, Moscow 108840, Russia
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A. V. Khomich
;
A. V. Khomich
(Formal analysis, Investigation, Methodology, Validation)
4
Kotel’nikov Institute of Radio Engineering and Electronics of Russian Academy of Science
, Fryazino 141120, Russia
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Jiecai Han;
Jiecai Han
(Resources, Supervision)
6
Harbin Institute of Technology
, Harbin 150080, People’s Republic of China
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V. I. Konov;
V. I. Konov
(Resources, Supervision)
2
Prokhorov Institute of General Physics of Russian Academy of Science
, Moscow 119991, Russia
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Jiaqi Zhu
Jiaqi Zhu
(Data curation, Resources, Supervision)
3
National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology
, Harbin 150080, People’s Republic of China
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a)Author to whom correspondence should be addressed: [email protected]
J. Appl. Phys. 133, 025102 (2023)
Article history
Received:
July 27 2022
Accepted:
December 19 2022
Citation
A. V. Inyushkin, A. N. Taldenkov, V. G. Ralchenko, Guoyang Shu, Bing Dai, A. P. Bolshakov, A. A. Khomich, E. E. Ashkinazi, K. N. Boldyrev, A. V. Khomich, Jiecai Han, V. I. Konov, Jiaqi Zhu; Thermal conductivity of pink CVD diamond: Influence of nitrogen-related centers. J. Appl. Phys. 14 January 2023; 133 (2): 025102. https://doi.org/10.1063/5.0115623
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