Properties of transparent yttrium oxide dielectric films prepared by sol-gel process

Chien Yie Tsay, Chia Hsiang Cheng, Yu Wu Wang

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

In this research, yttrium oxide (Y 2O 3) gate dielectric films were deposited onto alkali-free glass substrates by a sol-gel process. This report describes the effects of annealing temperatures on the microstructural and electrical properties of sol-gel derived Y 2O 3 films. These sol-gel films were preheated at 300 °C for 10 min, and then annealed at 400-550 °C for 1 h. XRD results revealed that all annealed films exhibited preferential (2 2 2) orientation; films annealed at 450-550 °C were polycrystalline with cubic structures. The average transmittances of polycrystalline Y 2O 3 films were over 88.0% in the visible range. The electrical properties of the Y 2O 3 films were analyzed by capacitance-voltage (C-V) and current-voltage (I-V) measurements. Films annealed at 500 °C yielded the lowest leakage current density, 1.8 × 10 -7 A/cm 2, at an applied voltage of 5 V, and had a dielectric constant of 10.0 at 100 kHz.

Original languageEnglish
Pages (from-to)1677-1682
Number of pages6
JournalCeramics International
Volume38
Issue number2
DOIs
Publication statusPublished - 2012 Mar 1

Fingerprint

Yttrium oxide
Dielectric films
Sol-gel process
Oxide films
Sol-gels
Electric properties
Electric potential
Gate dielectrics
Alkalies
yttria
Leakage currents
Permittivity
Capacitance
Current density
Annealing
Glass
Substrates

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Tsay, Chien Yie ; Cheng, Chia Hsiang ; Wang, Yu Wu. / Properties of transparent yttrium oxide dielectric films prepared by sol-gel process. In: Ceramics International. 2012 ; Vol. 38, No. 2. pp. 1677-1682.
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Properties of transparent yttrium oxide dielectric films prepared by sol-gel process. / Tsay, Chien Yie; Cheng, Chia Hsiang; Wang, Yu Wu.

In: Ceramics International, Vol. 38, No. 2, 01.03.2012, p. 1677-1682.

Research output: Contribution to journalArticle

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