Second harmonic generation and broad-band photoluminescence in mesoporous Si/SiO2 nanoparticles

IF 6.5 2区物理与天体物理 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Nanophotonics Pub Date : 2024-07-31 DOI:10.1515/nanoph-2024-0218

Viktoriia Mastalieva, Vladimir Neplokh, Arseniy Aybush, Ekaterina Stovpiaga, Daniil Eurov, Maksim Vinnichenko, Danila Karaulov, Demid Kirillenko, Alexey Mozharov, Vladislav Sharov, Denis Kolchanov, Andrey Machnev, Valery Golubev, Alexander Smirnov, Pavel Ginzburg, Sergey Makarov, Dmitry Kurdyukov, Ivan Mukhin

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Abstract

Efficient second harmonic generation and broad-band photoluminescence from deeply subwavelength and nontoxic nanoparticles is essential for nanophotonic applications. Here, we explore nonlinear optical response from mesoporous Si/SiO2, SiO2, and Si nanoparticles, considering various fabrication and treatment procedures. We show that thermal annealing (including femtosecond laser treatment) of mesoporous Si/SiO2 nanoparticles provides the transformation of Si phase from amorphous to crystalline, enhancing the second harmonic and nonlinear photoluminescent response. Notably, the SiO2 mesoporous frame of the considered Si/SiO2 nanoparticles plays a dual positive role for the nonlinear process: it stabilizes the Si material, and SiO2:OH− material has a second-order nonlinearity itself and impacts to the observed second harmonic signal.

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介孔 Si/SiO2 纳米粒子中的二次谐波生成和宽带光致发光

深亚波长和无毒纳米粒子的高效二次谐波生成和宽带光致发光对于纳米光子应用至关重要。在此，我们考虑了各种制造和处理过程，探索了介孔 Si/SiO2、SiO2 和 Si 纳米粒子的非线性光学响应。我们发现，介孔 Si/SiO2 纳米粒子的热退火（包括飞秒激光处理）可使 Si 相从无定形转变为晶体，从而增强二次谐波和非线性光致发光响应。值得注意的是，所考虑的 Si/SiO2 纳米粒子的 SiO2 介孔框架对非线性过程起着双重积极作用：它稳定了 Si 材料，SiO2:OH- 材料本身具有二阶非线性，并对观察到的二次谐波信号产生影响。

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来源期刊

Nanophotonics NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

13.50

自引率

6.70%

发文量

358

审稿时长

7 weeks

期刊介绍： Nanophotonics, published in collaboration with Sciencewise, is a prestigious journal that showcases recent international research results, notable advancements in the field, and innovative applications. It is regarded as one of the leading publications in the realm of nanophotonics and encompasses a range of article types including research articles, selectively invited reviews, letters, and perspectives. The journal specifically delves into the study of photon interaction with nano-structures, such as carbon nano-tubes, nano metal particles, nano crystals, semiconductor nano dots, photonic crystals, tissue, and DNA. It offers comprehensive coverage of the most up-to-date discoveries, making it an essential resource for physicists, engineers, and material scientists.

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