Field Emission of Electrons Powered by a Triboelectric Nanogenerator
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AbstractField emission of electrons usually requires high voltage (HV) of at least 100 V, which limits its applications due to the high cost, instability, portability issues, etc., of the HV instrument. Triboelectric nanogenerators (TENGs) have been developed to provide an HV of at least several kV for portable/mobile instrument, with controllability already demonstrated. Here, the field emission of electrons driven by TENG, namely, tribo-field emission, is presented for the first time. The emission voltage and the charge transfer per cycle can be tuned and controlled by TENG. The current peak generated from TENG with limited charge transfer is demonstrated to be more favorable than the direct current HV source in terms of emitter protection. A unidirectional continuous emission current is achieved through the tribo-field emission. A cathode-ray tube can be powered by TENG, with hours of illumination demonstrated through only one sliding motion. Such approach can provide a potential solution for controllable, stable, and portable field-emission devices without any additional external power sources.
All Author(s) ListZi YL, Wu CS, Ding WB, Wang XF, Dai YJ, Cheng J, Wang JY, Wang ZJ, Wang ZL
Journal nameAdvanced Functional Materials
Volume Number28
Issue Number21
Article number1800610
LanguagesEnglish-United Kingdom
Keywordsfield emission,motion-controlled output,portable instruments,triboelectric nanogenerators
Web of Science Subject CategoriesChemistry, Multidisciplinary;Chemistry, Physical;Nanoscience & Nanotechnology;Materials Science, Multidisciplinary;Physics, Applied;Physics, Condensed Matter;Chemistry;Science & Technology - Other Topics;Materials Science;Physics

Last updated on 2020-27-09 at 02:29