Phototunable Biomemory Based on Light-Mediated Charge Trap
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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Detail(s)
Original language | English |
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Article number | 1800714 |
Journal / Publication | Advanced Science |
Volume | 5 |
Issue number | 9 |
Online published | 25 Jun 2018 |
Publication status | Published - Sept 2018 |
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DOI | DOI |
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Attachment(s) | Documents
Publisher's Copyright Statement
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Link to Scopus | https://www.scopus.com/record/display.uri?eid=2-s2.0-85053469962&origin=recordpage |
Permanent Link | https://scholars.cityu.edu.hk/en/publications/publication(9286cff1-70e3-43e2-87e3-d89f9695865a).html |
Abstract
Phototunable biomaterial-based resistive memory devices and understanding of their underlying switching mechanisms may pave a way toward new paradigm of smart and green electronics. Here, resistive switching behavior of photonic biomemory based on a novel structure of metal anode/carbon dots (CDs)-silk protein/indium tin oxide is systematically investigated, with Al, Au, and Ag anodes as case studies. The charge trapping/detrapping and metal filaments formation/rupture are observed by in situ Kelvin probe force microscopy investigations and scanning electron microscopy and energy-dispersive spectroscopy microanalysis, which demonstrates that the resistive switching behavior of Al, Au anode-based device are related to the space-charge-limited-conduction, while electrochemical metallization is the main mechanism for resistive transitions of Ag anode-based devices. Incorporation of CDs with light-adjustable charge trapping capacity is found to be responsible for phototunable resistive switching properties of CDs-based resistive random access memory by performing the ultraviolet light illumination studies on as-fabricated devices. The synergistic effect of photovoltaics and photogating can effectively enhance the internal electrical field to reduce the switching voltage. This demonstration provides a practical route for next-generation biocompatible electronics.
Research Area(s)
- carbon dots, charge trapping, Kelvin probe force microscopy, resistive switching, silk
Citation Format(s)
Phototunable Biomemory Based on Light-Mediated Charge Trap. / Lv, Ziyu; Wang, Yan; Chen, Zhonghui et al.
In: Advanced Science, Vol. 5, No. 9, 1800714, 09.2018.
In: Advanced Science, Vol. 5, No. 9, 1800714, 09.2018.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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