Multiple conduction paths in boron δ -doped diamond structures

Niall Tumilty, Joseph Welch, Haitao Ye, Richard S. Balmer, Christopher Wort, Richard Lang, Richard B. Jackman

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


Impedance spectroscopy has been used to investigate conductivity within boron-doped diamond in an intrinsic/delta-doped/intrinsic (i-δ-i) multilayer structure. For a 5 nm thick delta layer, three conduction pathways are observed, which can be assigned to transport within the delta layer and to two differing conduction paths in the i -layers adjoining the delta layer. For transport in the i -layers, thermal trapping/detrapping processes can be observed, and only at the highest temperature investigated (673 K) can transport due to a single conduction process be seen. Impedance spectroscopy is an ideal nondestructive tool for investigating the electrical characteristics of complex diamond structures.

Original languageEnglish
Article number052107
JournalApplied Physics Letters
Issue number5
StatePublished - 2009

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