Multiple-shelled hollow microspheres integrated by ZnO nanodots as UV photodetectors for use in space with omnidirectional supersensitivity

Der Hsien Lien, Jr-Hau He*, Zhenghong Dong, Dan Wang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


We demonstrate a novel, feasible strategy on practical application of UV photodetectors using multiple-shelled hollow ZnO microspheres integrated by nanodots for space application with omnidirectional sensitivity. Due to the resonance-assisted effect by the convex shells, the microsphere devices exhibits enhanced photoresponse with photogain of G ~ 10. Moreover, the response and recovery speed are promoted (response/recovery times: 0.8/1.2 ms) because of the existence of junction barriers between microspheres. We also demonstrated the omnidirectional detectability and proton tolerance ability of the microsphere devices as a reliable test for space use. The concept employing multiple-shelled hollow ZnO microspheres paves a new way to realize nanostructured photodetectors using in harsh environment and space mission.

Original languageEnglish (US)
Title of host publicationNanophotonics, Nanoelectronics and Nanosensor, N3 2013
StatePublished - Nov 21 2013
EventNanophotonics, Nanoelectronics and Nanosensor, N3 2013 - Wuhan, China
Duration: May 25 2013May 26 2013

Publication series

NameNanophotonics, Nanoelectronics and Nanosensor, N3 2013


OtherNanophotonics, Nanoelectronics and Nanosensor, N3 2013

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics

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