Capacitance switching in SiO2 thin film embedded with Ge nanocrystals caused by ultraviolet illumination

M. Yang, T. P. Chen*, L. Ding, Y. Liu, F. R. Zhu, S. Fung

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

2 Citations (Scopus)

Abstract

A structure of indium tin oxide/ SiO2 embedded with Ge nanocrystal (nc-Ge) /p-Si substrate was fabricated. The capacitance of the structure can be switched to a high-capacitance or low-capacitance state by an ultraviolet (UV) illumination. The increase (or decrease) in the capacitance is accompanied with the decrease (or increase) in the oxide resistance. The capacitance switching is explained in terms of the UV illumination-induced charging and discharging in the nc-Ge.

Original languageEnglish
Article number091111
Number of pages3
JournalApplied Physics Letters
Volume95
Issue number9
DOIs
Publication statusPublished - 31 Aug 2009

Scopus Subject Areas

  • Physics and Astronomy (miscellaneous)

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