Rotating-frame nuclear magnetic resonance study of the distinct dynamics of hydrogen donors in ZnO

Jun Kue Park; Kyu Won Lee; Cheol Eui Lee

doi:10.1063/1.4815868

Rotating-frame nuclear magnetic resonance study of the distinct dynamics of hydrogen donors in ZnO

Jun Kue Park, Kyu Won Lee, Cheol Eui Lee

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

5 Citations (Scopus)

Abstract

The rotating-frame spin-lattice relaxation of two types of the hydrogen donors was well distinguished in the ¹H nuclear magnetic resonance measurements in a sol-gel prepared ZnO system, providing a unique opportunity to study the distinct proton dynamics. Our study indicates interconversion of the interstitial H (H_i). The population of the mobile H_i showed decrease above ∼370 K, apparently being trapping into the oxygen vacancies resulting in the more stable oxygen-substitutional H (H O). The activation barrier for migration of H_i and the binding energy of H O were found to be 0.27 eV and 0.51 eV, respectively.

Original language	English
Article number	023109
Journal	Applied Physics Letters
Volume	103
Issue number	2
DOIs	https://doi.org/10.1063/1.4815868
Publication status	Published - 2013 Jul 8

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (Cyclotron Users Program 2012-029495, No. 20100-029418, and Project No. 2012-034779). K.W.L. was supported by a Korea University Grant. The measurements at the Korean Basic Science Institute (KBSI) are acknowledged.

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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abstract = "The rotating-frame spin-lattice relaxation of two types of the hydrogen donors was well distinguished in the 1H nuclear magnetic resonance measurements in a sol-gel prepared ZnO system, providing a unique opportunity to study the distinct proton dynamics. Our study indicates interconversion of the interstitial H (Hi). The population of the mobile Hi showed decrease above ∼370 K, apparently being trapping into the oxygen vacancies resulting in the more stable oxygen-substitutional H (H O). The activation barrier for migration of Hi and the binding energy of H O were found to be 0.27 eV and 0.51 eV, respectively.",

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AB - The rotating-frame spin-lattice relaxation of two types of the hydrogen donors was well distinguished in the 1H nuclear magnetic resonance measurements in a sol-gel prepared ZnO system, providing a unique opportunity to study the distinct proton dynamics. Our study indicates interconversion of the interstitial H (Hi). The population of the mobile Hi showed decrease above ∼370 K, apparently being trapping into the oxygen vacancies resulting in the more stable oxygen-substitutional H (H O). The activation barrier for migration of Hi and the binding energy of H O were found to be 0.27 eV and 0.51 eV, respectively.

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Rotating-frame nuclear magnetic resonance study of the distinct dynamics of hydrogen donors in ZnO

Abstract

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