Electrical properties and Mott parameters of polycrystalline diamond films synthesized by HF CVD method from hydrogen/methanol gas mixture

Banaszak-Piechowska, A.; Fabisiak, K.; Staryga, E.; Paprocki, K.

doi:10.1515/msp-2017-0101

Artykuł - szczegóły

Tytuł artykułu

Electrical properties and Mott parameters of polycrystalline diamond films synthesized by HF CVD method from hydrogen/methanol gas mixture

Autorzy

Banaszak-Piechowska A. , Fabisiak K. , Staryga E. , Paprocki K.

Wybrane pełne teksty z tego czasopisma

Identyfikatory

DOI

10.1515/msp-2017-0101

Warianty tytułu

Języki publikacji

Abstrakty

The influence of diamond crystallinity and preferred orientation on electronic conductivity of synthetic diamond films grown by hot filament chemical vapour deposition (HFCVD) was investigated. The CVD diamond films of different morphologies and crystallite sizes varying from 36 nm to 67 nm, measured in ‹2 2 0› direction were considered. The charge transport mechanism in the diamond samples was studied using temperature dependent DC conductivity measurements. The obtained results showed that in the temperature range of 90 K to 300 K charge transport is realized via Variable Range Hopping (VRH, m = 1/4) mechanism. Using VRH model, the Mott parameters were evaluated i.e. density of states at Fermi level N(E_F) (0.22 × 10¹⁵ eV^-1·cm^-3 to 1.7 × 10¹⁵ eV^-1·cm^-3), hopping energy W (43.5 meV to 142.3 meV) and average hopping distance R (1.49 × 10^-5cm to 2.56 × 10^-5cm). It was shown that above mentioned parameters strongly depend on diamond film preferential orientation.

Słowa kluczowe

CVD diamond films electrical conductivity hopping conduction

Wydawca

De Gruyter

Czasopismo

Materials Science Poland

Rocznik

2017

Tom

Vol. 35, No. 4

Strony

830--837

Opis fizyczny

Bibliogr. 31 poz., rys., tab.

Twórcy

autor

Banaszak-Piechowska A.

Institute of Physics, Kazimierz Wielki University, Powstanców Wielkopolskich 2, 85-090 Bydgoszcz, Poland

autor

Fabisiak K.

Institute of Physics, Kazimierz Wielki University, Powstanców Wielkopolskich 2, 85-090 Bydgoszcz, Poland

autor

Staryga E.

Institute of Physics, Technical University of Łód´z, Wólczanska 219, 93-005 Łód´z, Poland

autor

Paprocki K.

paprocki@ukw.edu.pl

Institute of Physics, Kazimierz Wielki University, Powstanców Wielkopolskich 2, 85-090 Bydgoszcz, Poland

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).

Typ dokumentu

Bibliografia

Identyfikator YADDA

bwmeta1.element.baztech-f66d5c12-c82a-48df-a109-3ef883e85686