Broadband optical properties of Ti3C2 MXene revisited

Panova, D.A.; Tselikov, G.I.; Ermolaev, G.A.; Syuy, A.V.; Zimbovskii, D.S.; Kapitanova, O.O.; Yakubovsky, D.I.; Mazitov, A.B.; Kruglov, I.A.; Vyshnevyy, A.A.; Arsenin, A.V.; Volkov, V.S.

Авторы: Panova Daria A., Tselikov Gleb I., Ermolaev Georgy A., Syuy Alexander V., Zimbovskii Dmitrii S., Kapitanova Olesya O., Yakubovsky Dmitry I., Mazitov Arslan B., Kruglov Ivan A., Vyshnevyy Andrey A., Arsenin Aleksey V., Volkov Valentyn S.
Журнал: Optics Letters
Том: 49
Номер: 1
Год издания: 2024
Издательство: Optical Society of America
Местоположение издательства: United States
Первая страница: 25
Последняя страница: 28
DOI: 10.1364/ol.503636
Аннотация: The exceptional optical, electrical, and mechanical capabilities of layered transition metal carbides, nitrides, and carbonitrides, called MXenes, revolutionized materials science. Among them, Ti3C2 received the most attention owing to the developed synthesis and processing methods, high conductivity, and pronounced plasmonic response. The latter, however, remains controversial with the open question of whether the peak around 800 nm has plasmonic or interband transition origin. To address this issue, we combine spectroscopic ellipsometry and transmittance results with first-principle computations. Their combination reveals that although Ti3C2 is a metal, its optical response becomes plasmonic (Re ε < 0) above 1415 nm, in contrast to the previous understanding. In addition to fundamental significance, this dual dielectric/plasmonic optical response opens a path for theranostic applications, as we demonstrated on the example of Ti3C2 nanospheres. Thus, our study revisits broadband (300–3300 nm) optical constants of Ti3C2 and broadens its application scope in photonics.
Добавил в систему: Зимбовский Дмитрий Станиславович

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