Multiband Luminescence in Nanodiamond via Voltage-Controlled Atmospheric Pressure Microplasma Synthesis

IF 4.3 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY Journal of Physics and Chemistry of Solids Pub Date : 2025-03-07 DOI:10.1016/j.jpcs.2025.112682

Saman Iqbal , Muhammad Shahid Rafique , Nida Iqbal , Sultan Akhtar

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Abstract

This research aims to investigate the influence of atmospheric pressure Microplasma (APM) voltage on the optical properties of NDs. The APM has dissociated the mixture of ethanol and Argon. The applied voltage was varied from 2.5 to 4.5 kV. SAED (selected area electron diffraction) confirmed the Lonsdaleite structure. NDs (∼3 nm) were synthesized at an applied voltage of 3.0 kV. Raman analysis confirmed that increased applied voltage enhanced the t-PA (trans-polyacetylene) band with a decrease in the diamond band. FTIR (Fourier Transform Infrared Spectrophotometer) indicated the presence of oxygen-containing functional groups responsible for multiband emissions on the surface of NDs. UV–visible spectra verified absorption from oxygen functional groups. PL (photoluminescence) emission spectra exhibited violet (446 nm), blue (∼469 nm), cyan (495 nm), and green (519 nm) emission from surface states. The CIE coordinates for NDs were tuned from blue to green region. The luminescent NDs offered emerging applications in optoelectronic devices, bioimaging, biosensing, photosensitizers, drug testing, quantum computing, and magnetic sensing.

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来源期刊

Journal of Physics and Chemistry of Solids 工程技术-化学综合

CiteScore

7.80

自引率

2.50%

发文量

605

审稿时长

40 days

期刊介绍： The Journal of Physics and Chemistry of Solids is a well-established international medium for publication of archival research in condensed matter and materials sciences. Areas of interest broadly include experimental and theoretical research on electronic, magnetic, spectroscopic and structural properties as well as the statistical mechanics and thermodynamics of materials. The focus is on gaining physical and chemical insight into the properties and potential applications of condensed matter systems. Within the broad scope of the journal, beyond regular contributions, the editors have identified submissions in the following areas of physics and chemistry of solids to be of special current interest to the journal: Low-dimensional systems Exotic states of quantum electron matter including topological phases Energy conversion and storage Interfaces, nanoparticles and catalysts.