Porous silicon grains in SiO2 matrix: Ultrafast photoluminescence and optical gain

Luterova K; Dohnalova K; Trojanek F; Neudert K; Gilliot P; Honerlage B; Maly P; Pelant I

首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Porous silicon grains in SiO2 matrix: Ultrafast photoluminescence and optical gain

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Porous silicon grains in SiO2 matrix: Ultrafast photoluminescence and optical gain

机译：SiO2基体中的多孔硅晶粒：超快的光致发光和光学增益

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We search for the presence of stimulated emission in samples of porous silicon embedded in the sot-gel derived SiO2 matrix. By modifying the etching conditions of the porous silicon using hydrogen peroxide, we decrease substantially the nanocrystal size and produce a significant blue shift of the PL emission. Femtosecond variable-stripe length experiments combined with the shifting-excited spot technique demonstrates positive optical gain (modal gain similar to 25 cm(-1)) in the range 550-730 nm. Ultrafast photoluminescence dynamics indicates the origin of the stimulated emission as possibly due to recombination of excitonic states inside silicon nanocrystals. (c) 2006 Elsevier B.V. All rights reserved.

机译：我们寻找嵌入在热凝胶衍生的SiO2基质中的多孔硅样品中激发发射的存在。通过使用过氧化氢修改多孔硅的刻蚀条件，我们大大减小了纳米晶体的尺寸，并产生了PL发射的明显蓝移。飞秒可变条带长度实验与位移激发光斑技术相结合，证明在550-730 nm范围内具有正的光学增益（模态增益类似于25 cm（-1））。超快光致发光动力学表明受激发射的起源，可能是由于硅纳米晶体内部的激子态复合所致。（c）2006 Elsevier B.V.保留所有权利。

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《Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites》 |2006年第29期|共6页
作者
Luterova K; Dohnalova K; Trojanek F; Neudert K; Gilliot P; Honerlage B; Maly P; Pelant I;
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正文语种 eng
中图分类晶体学;
关键词
nanocrystals; optical properties; lasers; luminescence; non-linear optics; ultrafast processes and measurements; upconversion; time resolved measurements; STIMULATED-EMISSION; NANOCRYSTALLINE SILICON; WAVE-GUIDE; SIO2-FILMS; DYNAMICS;

机译：纳米晶体;光学性能;激光;发光;非线性光学;超快过程和测量;上转换;时间分辨测量;激发发射;纳米硅;波导管;SIO2-薄膜;动态;

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1. Porous silicon grains in SiO2 matrix: Ultrafast photoluminescence and optical gain [J] . Luterova K, Dohnalova K, Trojanek F, Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites . 2006,第28a29期

机译：SiO2基体中的多孔硅晶粒：超快的光致发光和光学增益
2. Grains of Porous Silicon Embedded in SiO_2: Studies of Optical Gain and lectroluminescence [J] . K. Dohnalova, K. Luterova, J. Valenta, Diffusion and Defect Data. Solid State Data, Part B. Solid State Phenomena . 2004,第0期

机译：SiO_2中嵌入的多孔硅晶粒：光学增益和电致发光的研究
3. Temperature-dependent Photoluminescence of Silicon Nanocrystals Embedded in SiO2 Matrix [J] . ZHANG Tianning, ZHANG Kenan, CHEN Xiren, 高等学校化学研究（英文版） . 2018,第004期

机译：SiO2基体中嵌入的硅纳米晶体的温度依赖性光致发光
4. Grains of Porous Silicon Embedded in SiO{sub}2: Studies of Optical Gain and Electroluminescence [C] . K. Dohnalova, K. Luterova, J. Valenta, European Materials Research Society Meeting - Symposium F - Functional Nanomaterials for Optoelectronics and other Applications . 2004

机译：嵌入在SiO {sub} 2中的多孔硅颗粒2：光学增益和电致发光的研究
5. Optical characterization and photoluminescence study of porous silicon. [D] . Stevens, Patrick Duane. 1995

机译：多孔硅的光学表征和光致发光研究。
6. Optical absorption and photoluminescence studies of gold nanoparticles deposited on porous silicon [O] . Tengku Sarah Tengku Amran, Md Roslan Hashim, Nihad K Ali Al-Obaidi, 2013

机译：沉积在多孔硅上的金纳米粒子的光吸收和光致发光研究
7. Ultrafast optical spectroscopy of surface-modified silicon quantum dots: unraveling the underlying mechanism of the ultrabright and color-tunable photoluminescence [O] . Lei Wang, Qi Li, Hai-Yu Wang, 2015

机译：表面改性硅量子点的超快光谱：解开超大和可调色光发光的底层机构

Porous silicon grains in SiO2 matrix: Ultrafast photoluminescence and optical gain

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