Open AccessLow switching voltage ZnO quantum dots doped polymer-dispersed liquid crystal film
Author(s) -
Chuan-Chun Hsu,
Yixuan Chen,
Huiwen Li,
Jy-Shan Hsu
Publication year - 2016
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.007063
Subject(s) - materials science , liquid crystal , doping , electric field , polymer , scanning electron microscope , voltage , threshold voltage , optoelectronics , optics , nanoparticle , quantum dot , contrast ratio , nanotechnology , composite material , physics , transistor , quantum mechanics
This paper investigates the effects of ZnO nanoparticles (NPs) on the switching voltages of polymer dispersed liquid crystal (PDLC) films. The threshold and driving electric fields of PDLC film doped with 2.44 wt% ZnO NPs were 0.13 and 0.31 V/μm, respectively, with a contrast ratio of 26. The results of field emission scanning electron microscopy show that the size of the droplets in doped PDLC films increases with the doping concentration. The development of ZnO-doped PDLC films with low driving voltages greatly broadens the applicability of these devices.