ISSN 0869-6632 (Print)
ISSN 2542-1905 (Online)

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Tumareva T. A., Sominskii G. G., Bondarenko A. K., Morozov A. N., Svetlov I. A. Field emitters with fullerene coatings and their activation. Izvestiya VUZ. Applied Nonlinear Dynamics, 2006, vol. 14, iss. 3, pp. 51-69. DOI: 10.18500/0869-6632-2006-14-3-51-69

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Field emitters with fullerene coatings and their activation

Tumareva Tatjana Alekseevna, Peter the Great St. Petersburg Polytechnic University
Sominskii G. G., Peter the Great St. Petersburg Polytechnic University
Bondarenko Anna Konstantinovna, Peter the Great St. Petersburg Polytechnic University
Morozov Aleksandr Nikolaevich, Peter the Great St. Petersburg Polytechnic University
Svetlov Ilja Aleksandrovich, Peter the Great St. Petersburg Polytechnic University

Methods of fullerene-coated tip field emitter creation were worked out and investigated. Basic rules and mechanisms of the microstructure origin on the fullerene surface during coverage formation and treatment (thermal and field) were determined. The emitters with fullerene coatings were made that secure stable currents from the single submicron tip up to 150 µA at static regime and up to 1.5–2 mA at pulsed one. Activation of the fullerene-coated field emitter by potassium atom and ion flows was studied. The rapid operating voltage increase immediately after the end of activation by potassium atoms was discovered and explained. It was shown that lasting operating voltage decrease up to two times is possible to reach treating the fullerene coating by the potassium ion flow. Obtained results attest that efficiency of the fullerene coating activation by the potassium ion flow may be connected with formation of endohedral ((K@C60) and/or exohedral (C60@K) molecules in the coverage. 

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