GaOx@GaN Nanowire Arrays on Flexible Graphite Paper with Tunable Persistent Photoconductivity

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

View graph of relations

Author(s)

  • Yu-Hang Ji
  • Qin Gao
  • An-Ping Huang
  • Meng-Qi Yang
  • Yan-Qi Liu
  • Xue-Li Geng
  • Jing-Jing Zhang
  • Ru-Zhi Wang
  • Mei Wang
  • Zhi-Song Xiao

Detail(s)

Original languageEnglish
Pages (from-to)41916–41925
Journal / PublicationACS Applied Materials and Interfaces
Volume13
Issue number35
Online published27 Aug 2021
Publication statusPublished - 8 Sep 2021

Abstract

Flexible optoelectronic synaptic devices that functionally imitate the neural behavior with tunable optoelectronic characteristics are crucial to the development of advanced bioinspired neural networks. In this work, amorphous oxide-decorated GaN nanowire arrays (GaOx@GaN NWAs) are prepared on flexible graphite paper. A GaOx@GaN NWA-based flexible device has tunable persistent photoconductivity (PPC) and shows a conversible fast/slow decay process (SDP). Photoconductivity can be modulated by single or double light pulses with different illumination powers and biases. PPC gives rise to the high-performance SDP such as a long decay time of 2.3 × 105 s. The modulation mechanism is proposed and discussed. Our results reveal an innovative and efficient strategy to produce decorated NWAs on a flexible substrate with tunable optoelectronic properties and exhibit potential for flexible neuromorphic system applications.

Research Area(s)

  • flexible device, GaN, nanowire array, optoelectronic synapse, persistent photoconductivity

Citation Format(s)

GaOx@GaN Nanowire Arrays on Flexible Graphite Paper with Tunable Persistent Photoconductivity. / Ji, Yu-Hang; Gao, Qin; Huang, An-Ping; Yang, Meng-Qi; Liu, Yan-Qi; Geng, Xue-Li; Zhang, Jing-Jing; Wang, Ru-Zhi; Wang, Mei; Xiao, Zhi-Song; Chu, Paul K.

In: ACS Applied Materials and Interfaces, Vol. 13, No. 35, 08.09.2021, p. 41916–41925.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review