Pulsed laser deposition of the doped lanthanum vanadate nanoparticles on glass and silicon substrates

TL;DR

This study demonstrates the successful pulsed laser deposition of doped lanthanum vanadate nanoparticles on glass and silicon, revealing substrate-dependent morphology, spectral properties, and potential for luminescent applications.

Contribution

First successful deposition of lanthanum vanadate nanoparticles on glass and silicon substrates using pulsed laser deposition, with analysis of morphology and spectral properties.

Findings

Films range from 27 to 220 nm thick with nanoparticles up to 20 nm.

Silicon substrates induce antireflection properties in the visible range.

Luminescence spectra show narrow lines from europium ions.

Abstract

Thin films from the lanthanum vanadate nanoparticles were successfully grown by pulsed laser deposition method on glass and silicon substrates for the first time. Morphology and thickness of the films depend on a type of substrate and a number of pulses. The films are of 27 to 220 nm thickness and formed by very small particles up to 20 nm and also can contain single nanoparticles with dimensions 40 to 60 nm and sometimes agglomerates of nanoparticles. Spectral properties of the samples have been investigated and discussed. The vanadate films deposited on the silicon substrates lead to appearance of antireflection properties in the visible range. Luminescence spectra of the investigated films consist of narrow lines caused by f-f transitions in the europium ions. For the samples on glass substrates the wide bands of glass emission are also contributed to the spectra. The optimal experimental conditions those allowed to obtain films promising for applications as luminescent converters are considered.