Frequency dependence of conductivity in intrinsic amorphous silicon carbide film, assessed through admittance measurement of metal insulator semiconductor structure
THIN SOLID FILMS, cilt.497, sa.1-2, ss.149-156, 2006 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 497 Sayı: 1-2
- Basım Tarihi: 2006
- Doi Numarası: 10.1016/j.tsf.2005.10.065
- Dergi Adı: THIN SOLID FILMS
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.149-156
- Anahtar Kelimeler: defect states, metal-insulator-semiconductor structures, hopping conductivity, admittance, LIGHT-EMITTING-DIODES, OPTICAL-CONSTANTS, THIN-FILMS, THICKNESS, STATES, MODEL, BEHAVIOR
- Ankara Üniversitesi Adresli: Hayır
Özet
A slightly carbon rich hydrogenated amorphous silicon carbide (a-SiCx:H) film was deposited by 13.56 MHz plasma enhanced chemical vapor deposition technique on p-type silicon (p-Si) wafer. Admittance analyses of the metal-insulator-semiconductor device (Al/a-SiCx:H/p-Si)from strong accumulation to strong inversion gate bias were achieved within a widespread frequency range (10(1)-10(6) Hz). An adequate equivalent circuit for each bias regime was proposed. The dependence of the ac conductivity both under strong accumulation and inversion on the frequency power-law was interpreted as due to the carrier exchange mechanism by hopping. (c) 2005 Elsevier B.V All rights reserved.