Low-voltage pulse exciting electron emission from ferroelectric copolymer film cathode: Role of film thickness and emission stability |
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Authors: | JJ Li C Lu XX Xia CZ Gu |
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Affiliation: | Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Nansan street No. 8, Beijing 100190, China |
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Abstract: | Ferroelectric copolymer thin films P(VDF-TrFE) are used as a ferroelectric cathode for investigation of their electron emission properties. This ferroelectric copolymer films with different thicknesses are deposited by spin-coating method, and then the annealing process is carried out to improve the crystallinities of as-deposited copolymer films. The measurement results of ferroelectric electron emission showed that the copolymer P(VDF-TrFE) films had a desired ferroelectric electron emission ability excited at low-voltage pulse, and its peak emission current can reach to be ∼1.3 μA when the pulse voltage is 280 V. In addition, the effect of film thickness on electron emission property and emission stability of copolymer thin film P(VDF-TrFE) are discussed. |
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Keywords: | Ferroelectric copolymer thin film Electron emission Emission stability |
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