Tunable Nanobattery Effect and Negative Differential Resistance Characteristics in Interfacial Polarization-Dominated Al2O3/TiO2 Nanolaminates
Source abstract
Abstract
We report insights into the interface carrier-confinement-assisted dielectric and electrical properties in atomic-layer-deposited Al 2 O 3 /TiO 2 nanolaminates (NLs). With progressive thinning of the sublayers down to ∼0.48 nm, the dielectric constant, polarization voltage, bang gap, and interfacial two-dimensional electron gas density of NLs improved due to the enhanced Maxwell–Wagner interfacial polarization and size-dependent quantum confinement effect. The typical current vs voltage ( I – V ) characteristics of NLs revealed an inherent nanobattery effect and quantum tunneling transport due to the electrical inhomogeneity and carrier confinement across sublayers, respectively. These tunable properties make these NLs a highly suitable dielectric material for various nanoelectronic applications.
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Research context
OpenAlex topics: Semiconductor materials and devices · Ferroelectric and Piezoelectric Materials · Dielectric properties of ceramics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Oxide Nano Electronics Lab., Laser Materials Processing Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, India
Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
Accelerator Physics and Synchrotrons Utilization Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, India
Funding
Raja Ramanna Centre for Advanced Technology, Department of Atomic Energy, Government of India · Homi Bhabha National Institute
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