Low frequency noise analysis of top-gate MgZnO thin-film transistor with High- ZrO2 gate insulator

Hsien Chin Chiu*, Hsiang Chun Wang, Che Kai Lin, Chau Wei Chiu, Jeffrey S. Fu, Kuang Po Hsueh, Feng Tso Chien

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

8 Scopus citations

Abstract

In this work, depletion-mode magnesium doped zinc-oxide (MgZnO) channel thin film transistors (TFTs) with zirconium oxide (ZrO2) gate insulator were fabricated using radio frequency magnetron sputtering deposition. Sputtered MgZnO TFT channel layer performed an average transmittance of 90 and an improved energy bandgap of 5.02 eV after 700C post annealing. X-ray photoelectron spectroscopy (XPS) results indicated that the binding energy of Zn-O bonds and Mg-O bonds were enhanced following with the increasing of the post annealing temperatures. The low frequency noise spectra also indicated that the ZrO2/MgZnO was dominated by flicker noise and gate leakage induced noise was suppressed.

Original languageEnglish
Pages (from-to)H385-H388
JournalElectrochemical and Solid-State Letters
Volume14
Issue number9
DOIs
StatePublished - 2011

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