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Journal Article
Frequency-Controllable Room-Temperature Electrical Oscillation in Two-Terminal Device Based on VO2 Thin Film
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- Authors
- Yong Wook Lee, Bong Jun Kim, Sung Youl Choi, Hyun Tak Kim
- Issue Date
- 2009-07
- Citation
- Journal of the Korean Physical Society, v.55, no.1, pp.134-139
- ISSN
- 0374-4884
- Publisher
- 한국물리학회 (KPS)
- Language
- English
- Type
- Journal Article
- Project Code
- 09MB2300, New electronic device using electric current jump, Hyun-Tak Kim
- Abstract
- For simple generation of an electrical oscillation without inductive components, electrical materials with a negative differential resistance, including perovskite and organic insulating materials, have been extensively studied. However, the implementation employing those materials was realizable only at very low temperature, and the oscillation frequency was at most tens of kHz and even fixed as ~40 Hz in the case of organic materials. Here we show a frequency-controllable roomtemperature electrical oscillation, whose frequency can be tuned and increased up to >1 MHz by simply adjusting one of the circuit components (voltage source, resistor, and capacitor), in vanadium dioxide thin films.
- KSP Keywords
- Electrical materials, Electrical oscillation, Low temperature(LT), Negative differential resistance(NDR), Organic insulating materials, Organic materials, Oscillation Frequency, Room-temperature, Two-terminal device, Vanadium dioxide thin film, Voltage source