Electrical transport mechanism in boron nitride thin film

ÖZDEMİR O., Anutgan M., Aliyeva-Anutgan T., Atilgan I., Katircioglu B.

JOURNAL OF NON-CRYSTALLINE SOLIDS, cilt.355, ss.851-859, 2009 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 355
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1016/j.jnoncrysol.2009.04.034
  • Dergi Adı: JOURNAL OF NON-CRYSTALLINE SOLIDS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.851-859
  • Anahtar Kelimeler: Alloys, III-V semiconductors, Heterojunctions, Band structure, Conductivity, Defects, FTIR measurements, CHARGE-TRANSPORT, BAND-STRUCTURE, HOPPING MODEL, ENERGY
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

Both dc and ac transport characteristics of plasma enhanced chemical vapor deposited (PECVD) boron nitride (BN) thin film was investigated by dc current vs. dc voltage measurement at different temperatures and admittance vs. gate voltage at various frequencies/temperatures, respectively. MIM metal (Al)-insulator (BN)-metal (Al) or MIS metal (Al)-BN-semiconductor (p-Silicon) test devices were conventionally produced. Both conductivity anisotropy and dc/ac detailed transport mechanism were analyzed within the frame of a turbostratic structure (t-BN), interfacing the substrate by a thin amorphous layer (a-BN). This defective BN film has been justified by both infrared (IR) analysis and indirectly by the resulting electrical transport behavior. Transport and its Variations as a function of temperature/frequency are in agreement with a hopping mechanism across Gauss-like energy distributed localized deep traps. (C) 2009 Elsevier B.V. All rights reserved.