NMR Observation of Mobile Protons in Proton-Implanted ZnO Nanorods

Jun Kue Park, Hyeok Jung Kwon, Cheol Eui Lee

Research output: Contribution to journalArticle

11 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

ASJC Scopus subject areas

  • General

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