Publication detail

The current-voltage characteristics of the ferroelectric p-YMnO3 thin film/bulk p-Si heterojunction over a broad measurement temperature range

TURUT, A. COSKUN, M. COSKUN, F. M. POLAT, Ö. DURMUS, Z. CAGLAR, M. EFEOGLU, H.

Original Title

The current-voltage characteristics of the ferroelectric p-YMnO3 thin film/bulk p-Si heterojunction over a broad measurement temperature range

Type

journal article in Web of Science

Language

English

Original Abstract

The reverse and forward bias I-V characteristics of the Al/p-YMO/p-Si/Al heterojunction were measured at room temperature (RT) and over temperature range, from 50 to 320 K, and the I-V curves showed Schottky diode-like characteristics. The ideality factor and barrier height values were calculated as 0.81 and 2.62 from the forward bias I-V curve at room temperature (300 K), respectively. The YMO powder was prepared via solid state reaction technique. YMO thin films were grown on front surface of p-Si substrate by radio frequency (rf) magnetron sputtering using a polycrystalline YMO single target. The YMO thin film thickness on Si substrate was measured as similar to 70 nm via Dektak XT surface profilometer. The XRD, SEM, UV-Vis and XPS measurements of the YMO thin film were also performed. The bandgap energy of YMnO3 thin films was determined as 2.10 eV by UV-vis. The temperature-dependent reverse and forward bias I-V curves were evaluated in terms of thermionic emission (TE), Schottky emission, Fowler-Nordheim (F-N) tunneling and space charge-limited current (SCLC) current theories. Furthermore, it has been seen that the forward bias conduction in the junction at each temperature obeys F-N tunneling because of the linearity in the In (I/V-2) versus V-1 curves. (C) 2018 Elsevier B.V. All rights reserved.

Keywords

Ferroelectric; YMnO3; Polycrystalline; Al/p-YMO/p-Si/Al; Heterojunction; Schottky barrier; Temperature dependent current characteristics

Authors

TURUT, A.; COSKUN, M.; COSKUN, F. M.; POLAT, Ö.; DURMUS, Z.; CAGLAR, M.; EFEOGLU, H.

Released

25. 4. 2019

Publisher

ELSEVIER SCIENCE SA

Location

LAUSANNE

ISBN

0925-8388

Periodical

Journal of Alloys and Compounds

Year of study

782

Number

1

State

Swiss Confederation

Pages from

566

Pages to

575

Pages count

10

URL

https://www.sciencedirect.com/science/article/pii/S0925838818348023?via%3Dihub

BibTex

@article{BUT161931,
  author="TURUT, A. and COSKUN, M. and COSKUN, F. M. and POLAT, Ö. and DURMUS, Z. and CAGLAR, M. and EFEOGLU, H.",
  title="The current-voltage characteristics of the ferroelectric p-YMnO3 thin film/bulk p-Si heterojunction over a broad measurement temperature range",
  journal="Journal of Alloys and Compounds",
  year="2019",
  volume="782",
  number="1",
  pages="566--575",
  doi="10.1016/j.jallcom.2018.12.246",
  issn="0925-8388",
  url="https://www.sciencedirect.com/science/article/pii/S0925838818348023?via%3Dihub"
}