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

IF 4.9 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY Journal of Physics and Chemistry of Solids Pub Date : 2025-07-01 Epub 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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压控大气压微等离子体合成纳米金刚石的多波段发光

本研究旨在探讨大气压微等离子体（APM）电压对ndds光学特性的影响。APM已经解离了乙醇和氩气的混合物。施加电压在2.5 ~ 4.5 kV之间变化。选择区电子衍射（SAED）证实了Lonsdaleite的结构。在3.0 kV的施加电压下合成了nd （~ 3nm）。拉曼分析证实，施加电压的增加增强了t-PA（反式聚乙炔）带，而减小了金刚石带。傅里叶变换红外分光光度计（FTIR）表明，NDs表面存在负责多波段发射的含氧官能团。紫外可见光谱证实了氧官能团的吸收。PL（光致发光）发射光谱显示出表面态的紫色（446 nm）、蓝色（~ 469 nm）、青色（495 nm）和绿色（519 nm）发射。nd的CIE坐标从蓝色区域调到绿色区域。发光NDs在光电子器件、生物成像、生物传感、光敏剂、药物测试、量子计算和磁传感等领域提供了新兴的应用。

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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.