Development of a high-brightness field-emission lighting device with ITO electrode

Field-emission (FE) devices have two-dimensional luminescence characteristics, unlike the zero- and one-dimensional characteristics of light-emitting diodes and fluorescent tubes, respectively, and thus have potential for lighting applications. However, there are currently no FE lighting devices wit...

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Bibliographic Details
Published in:Vacuum 2020-11, Vol.181, p.109733, Article 109733
Main Authors: Youh, Meng-Jey, Huang, Cheng-Liang, Wang, Yun-Lin, Chiang, Li-Ming, Li, Yuan-Yao
Format: Article
Language:English
Subjects:
Field emissio
ITO electrode
Lighting device
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Summary:Field-emission (FE) devices have two-dimensional luminescence characteristics, unlike the zero- and one-dimensional characteristics of light-emitting diodes and fluorescent tubes, respectively, and thus have potential for lighting applications. However, there are currently no FE lighting devices with high luminance, long lifetime, and high efficiency. In this study, a triode structure that consists of gate and lateral cathode electrodes is fabricated using transparent indium tin oxide glass. Carbon nanotubes are patterned using screen printing onto the cathode as field emitters. FE studies show that the proposed device, with pulse width modulation used to adjust the on/off ratio of the voltage, can achieve high brightness (19,451 cd/m2), high uniformity (82%), and high luminance stability (luminance drop of 9% after 120 min). •A novel field emission device was fabricated with a lateral gate and transparent ITO electrode.•The maximum luminance of 19,451 cd/m2, high uniformity of 82% can be obtained.•The high luminance stability was obtained by pulse width modulation.
ISSN:0042-207X
1879-2715
DOI:10.1016/j.vacuum.2020.109733