NMR Observation of Mobile Protons in Proton-Implanted ZnO Nanorods

Jun Kue Park, Hyeok Jung Kwon, Cheol Eui Lee

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

The diffusion properties of H+ in ZnO nanorods are investigated before and after 20 MeV proton beam irradiation by using 1 H nuclear magnetic resonance (NMR) spectroscopy. Herein, we unambiguously observe that the implanted protons occupy thermally unstable site of ZnO, giving rise to a narrow NMR line at 4.1 ppm. The activation barrier of the implanted protons was found to be 0.46 eV by means of the rotating-frame spin-lattice relaxation measurements, apparently being interstitial hydrogens. High-energy beam irradiation also leads to correlated jump diffusion of the surface hydroxyl group of multiple lines at ∼1 ppm, implying the presence of structural disorder at the ZnO surface.

Original languageEnglish
Article number23378
JournalScientific reports
Volume6
DOIs
Publication statusPublished - 2016 Mar 18

Bibliographical note

Funding Information:
This work has been supported through KOMAC operation fund of KAERI by Ministry of Science ICT and Future Planning of Korean Government. The measurements at the Korean Basic Science Institute (KBSI) are acknowledged.

ASJC Scopus subject areas

  • General

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