Stacked layers of Nb2O5/Pt/Nb2O5 designed as conducting oxides, terahertz band filters, and semitransparent light absorbers
Yükleniyor...
Dosyalar
Tarih
2024
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Herein, stacked layers of Nb2O5 structured with platinum nanosheets were fabricated to handle multifunctional electro-optic operations. The stacked layers of Nb2O5/Pt/Nb2O5 (NPN) were prepared by the ion coating technique and exhibited an amorphous structure. A remarkable increase in light absorption by more than 480% was achieved via the insertion of Pt nanosheets between layers of Nb2O5. Pt nanosheets with thicknesses of 50 nm and 100 nm successfully increased the electrical conductivity of the NPN layers by five and eight orders of magnitude, respectively, without losing transparency. This feature makes the NPN stacks suitable for transparent conducting oxide applications. The insertion of Pt nanosheets between layers of Nb2O5 also converted the conductivity from p- to n-type. In addition, NPN stacked layers exhibited highly enhanced dielectric properties, demonstrating an increase in the dielectric constant by 190%, making the NPN stacked layers suitable for use in the design of high-kappa gate dielectric devices. Moreover, when treated as optical filters, Drude-Lorentz fittings of the dielectric spectra showed that Pt nanosheets increased the free carrier density and the plasmon frequency. The terahertz cutoff frequency of the NPN devices steadily increased with increasing Pt nanosheet thickness. The terahertz cutoff frequency for NPN optical filters comprising a 100-nm-thick layer of Pt displayed values of 7.5 THz and 5.0 THz in the infrared and visible light ranges. The NPN stacks have potential for use in terahertz applications.
Açıklama
Anahtar Kelimeler
Conducting Oxides, High-k Gate Dielectrics, Light Absorbers, Nb2O5/Pt/Nb2O5, Terahertz
Kaynak
Journal of electronic materials
WoS Q DeÄŸeri
Q3
Scopus Q DeÄŸeri
Q2
Cilt
53
Sayı
11
Künye
Gaabour, L. H., Qasrawi, A. F., & Alharbi, S. R. (2024). Stacked layers of Nb2O5/Pt/Nb2O5 designed as conducting oxides, terahertz band filters, and semitransparent light absorbers. Journal of Electronic Materials, 53(11), 7096-7107.
