An insight of p-type to n-type conductivity conversion in oxygen ion-implanted ultrananocrystalline diamond films by impedance spectroscopy

Xu, Hui, Ye, Haitao, Coathup, David, Mitrovic, Ivona Z ORCID: 0000-0003-4816-8905, Weerakkody, Ayendra D and Hu, Xiaojun (2017) An insight of p-type to n-type conductivity conversion in oxygen ion-implanted ultrananocrystalline diamond films by impedance spectroscopy. APPLIED PHYSICS LETTERS, 110 (3). 033102-1-033102-5.

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Official URL: http://dx.doi.org/10.1063/1.4974077

Abstract

<jats:p>The impedance spectroscopy measurements were used to investigate the separated contributions of diamond grains and grain boundaries (GBs), giving an insight into p-type to n-type conductivity conversion in O+-implanted ultrananocrystalline diamond (UNCD) films. It is found that both diamond grains and GBs promote the conductivity in O+-implanted UNCD films, in which GBs make at least half contribution. The p-type conductivity in O+-implanted samples is a result of H-terminated diamond grains, while n-type conductive samples are closely correlated with O-terminated O+-implanted diamond grains and GBs in the films. The results also suggest that low resistance of GBs is preferable to obtain high mobility n-type conductive UNCD films.</jats:p>

Item Type:	Article
Depositing User:	Symplectic Admin
Date Deposited:	20 Jan 2017 08:28
Last Modified:	26 Jun 2023 18:32
DOI:	10.1063/1.4974077
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3005286