Nanosilicon Stabilized With Ligands: Effect of High‐Energy Proton Beam on Luminescent Properties

IF 1.6 4区化学 Q4 CHEMISTRY, PHYSICAL

Surface and Interface Analysis Pub Date : 2024-08-31 DOI:10.1002/sia.7354

Leonid A. Aslanov, Vladimir B. Zaitsev, Valery N. Zakharov, Igor K. Kudryavtsev, Vladimir M. Senyavin, Petr B. Lagov, Elena P. Romanteeva

引用次数: 0

Abstract

Silicon nanopowders with nitrogen heterocyclic carbene (NHC) and butyl as stabilizing ligands were synthesized by bottom‐up chemical methods. Transmission electron microscopy (TEM) was used to obtain nanoparticle size distribution with 1.8–2.5‐nm average diameter. Optical characteristics (photoluminescence [PL] and infrared [IR] absorption spectra) of samples were investigated as fabricated and on different steps of irradiation by high‐energy 22.5‐MeV protons. The PL spectral changes are slightly different for two cases, but in general, we can see a decrease in luminescence amplitude with fluence growth up to 4·1014 cm−2, mainly for NHC‐stabilized nanosilicon. Main mechanisms of radiation‐induced changes in nanosilicon sample optical properties are discussed by the joint use of PL and IR spectra analysis.

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配体稳定的纳米硅：高能质子束对发光特性的影响

采用自下而上的化学方法合成了以氮杂环碳化物（NHC）和丁基为稳定配体的硅纳米粉体。利用透射电子显微镜（TEM）获得了平均直径为 1.8-2.5 纳米的纳米颗粒粒度分布。研究了样品的光学特性（光致发光[PL]和红外[IR]吸收光谱）。两种情况下的聚光光谱变化略有不同，但总的来说，我们可以看到发光振幅随着通量的增长而降低，最高可达 4-1014 cm-2，这主要发生在 NHC 稳定的纳米硅上。通过联合使用聚光光谱和红外光谱分析，讨论了辐射诱导纳米硅样品光学特性变化的主要机制。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Surface and Interface Analysis 化学-物理化学

CiteScore

3.30

自引率

5.90%

发文量

130

审稿时长

4.4 months

期刊介绍： Surface and Interface Analysis is devoted to the publication of papers dealing with the development and application of techniques for the characterization of surfaces, interfaces and thin films. Papers dealing with standardization and quantification are particularly welcome, and also those which deal with the application of these techniques to industrial problems. Papers dealing with the purely theoretical aspects of the technique will also be considered. Review articles will be published; prior consultation with one of the Editors is advised in these cases. Papers must clearly be of scientific value in the field and will be submitted to two independent referees. Contributions must be in English and must not have been published elsewhere, and authors must agree not to communicate the same material for publication to any other journal. Authors are invited to submit their papers for publication to John Watts (UK only), Jose Sanz (Rest of Europe), John T. Grant (all non-European countries, except Japan) or R. Shimizu (Japan only).