Jump to main content
Jump to site search


From nanofibers to ordered ZnO/NiO heterojunction arrays for self-powered and transparent UV photodetector

Abstract

Uniformly aligned electrospun nanofiber arrays are important building blocks for high-performance functional devices and device arrays. However, it remains challenging to prepare perfectly aligned and large area nanofiber arrays using common electrospinning. In this work, a modified electrospinning method utilizing three assisted electrodes for nanofiber collection was proposed to achieve uniformly aligned and millimeters-long ZnO and NiO nanofiber arrays (more than 90% nanofibers aligned to within ±4° of the desired direction), which were further fabricated into ZnO/NiO heterojunction arrays with density of 106 cm-2. Photodetectors (PDs) based on the as-prepared ZnO/NiO heterojunction arrays exhibited excellent ultraviolet (UV) selective and self-powered detection properties because of the properly matched energy band of ZnO and NiO. A maximum responsivity of 0.415 mA W−1 and a short rise/decay time of 7.5 s/4.8 s at 0 V bias of the device markedly outstripped the reference ZnO nanofiber arrays device. The three-assisted-electrodes electrospinning of this work offered new chances in novel nanostructure design and high-performance device fabrication.

Back to tab navigation

Supplementary files

Publication details

The article was received on 22 Nov 2018, accepted on 04 Dec 2018 and first published on 04 Dec 2018


Article type: Communication
DOI: 10.1039/C8TC05877F
Citation: J. Mater. Chem. C, 2018, Accepted Manuscript
  •   Request permissions

    From nanofibers to ordered ZnO/NiO heterojunction arrays for self-powered and transparent UV photodetector

    Z. Zhang, Y. Ning and X. Fang, J. Mater. Chem. C, 2018, Accepted Manuscript , DOI: 10.1039/C8TC05877F

Search articles by author

Spotlight

Advertisements