Light-emitting structures of CdS nanocrystals in oxidized macroporous silicon

Karachevtseva L.; Kuchmii S.; Stroyuk O.; Lytvynenko O.; Sapelnikova O.; Stronska O.; Bo Wang; Kartel M.

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Light-emitting structures of CdS nanocrystals in oxidized macroporous silicon

机译：氧化大孔硅中CdS纳米晶体的发光结构

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Structured silicon substrates (macroporous silicon) with SiO2 nanolayers and CdS nanocrystals were proposed to reduce the flow of electrons and recombination outside the nanoparticle layer. It was found that the resonance electron scattering in samples with low concentration of Si-O-Si states transforms into ordinary scattering on ionized impurities for samples with high concentration of Si-O-Si states. The maximal intensity of photoluminescence was measured for a structure with maximum strength of the local electric field at the Si-SiO2 interface, indicating a significant decrease of non-radiative recombination in CdS nanocoating due to the flow of electrons from the silicon matrix towards the CdS nanocrystal layer. The quantum yield of photoluminescence increases with time due to evaporation of water molecules. (C) 2016 Elsevier B.V. All rights reserved.

机译：提出了具有SiO2纳米层和CdS纳米晶体的结构化硅衬底（大分子硅），以减少电子流和纳米颗粒层外的复合。结果发现，低浓度Si-O-Si态样品中的共振电子散射转化为高浓度Si-O-Si态样品中离子杂质的普通散射。测量了在Si-SiO2界面处具有最大电场强度的结构的最大光致发光强度，这表明由于电子从硅基体流向CdS，CdS纳米涂层中的非辐射复合显着减少。纳米晶体层。由于水分子的蒸发，光致发光的量子产率随时间增加。（C）2016 Elsevier B.V.保留所有权利。

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来源
《Applied Surface Science》 |2016年第ptaa期|288-293|共6页
作者
Karachevtseva L.; Kuchmii S.; Stroyuk O.; Lytvynenko O.; Sapelnikova O.; Stronska O.; Bo Wang; Kartel M.;
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Ningbo Univ Technol, 55-155 Cui Bai Rd, Ningbo 315016, Zhejiang, Peoples R China|NAS Ukraine, V Lashkaryov Inst Semicond Phys, 41 Nauki Pr, UA-03028 Kiev, Ukraine;

NAS Ukraine, L Pisarzhevsky Inst Phys Chem, 31 Nauki Pr, UA-03028 Kiev, Ukraine;

NAS Ukraine, L Pisarzhevsky Inst Phys Chem, 31 Nauki Pr, UA-03028 Kiev, Ukraine;

NAS Ukraine, V Lashkaryov Inst Semicond Phys, 41 Nauki Pr, UA-03028 Kiev, Ukraine;

NAS Ukraine, V Lashkaryov Inst Semicond Phys, 41 Nauki Pr, UA-03028 Kiev, Ukraine;

NAS Ukraine, V Lashkaryov Inst Semicond Phys, 41 Nauki Pr, UA-03028 Kiev, Ukraine;

Ningbo Univ Technol, 55-155 Cui Bai Rd, Ningbo 315016, Zhejiang, Peoples R China;

Ningbo Univ Technol, 55-155 Cui Bai Rd, Ningbo 315016, Zhejiang, Peoples R China;

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正文语种 eng
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Photoluminescence; CdS nanocrystals; Oxidized macroporous silicon;

机译：光致发光CdS纳米晶体氧化大孔硅;

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专利

1. Photoluminescence From Oxidized Macroporous Silicon: Nanoripples and Strained Silicon Nanostructures [J] . Ray M., Jana A., Ghanta U., Device and Materials Reliability, IEEE Transactions on . 2013,第1期

机译：氧化的大孔硅的光致发光：纳米波纹和应变硅纳米结构。
2. Light-Emitting Silicon Nanocrystals and Photonic Structures in Silicon Nitride [J] . Luca Dal Negro, Jae Hyung Yi, Jurgen Michel, IEEE journal of selected topics in quantum electronics . 2006,第期

机译：氮化硅中的发光硅纳米晶体和光子结构
3. Peculiarities of the formation and properties of light-emitting structures based on ion-synthesized silicon nanocrystals in SiO _2 and Al _2O _3 matrices [J] . Mikhaylov A.N., Belov A.I., Kostyuk A.B., Physics of the solid state . 2012,第2期

机译：离子合成的硅纳米晶体在SiO _2和Al _2O _3矩阵中发光结构的形成和性质的特殊性
4. Electro-optical effects in 2D macroporous silicon structures with nanocoatings Electro-optical effects in 2D macroporous silicon structures with nanocoatings Electro-optical effects in 2D macroporous silicon structures with nanocoatings [C] . Lyudmyla Karachevtseva, Yuriy Goltviansky, Oleg Lytvynenko, Nonlinear optics and applications V . 2011

机译：具有纳米涂层的2D大孔硅结构中的电光效果 r n具有纳米涂层的2D大孔硅结构中的电光效果 r n r n具有纳米涂层的2D大孔硅结构中的电光效果
5. Efficient Computation of Quantum Dot Properties: Application of Modified Charge Equilibration to Large Inclusive Sets of Wurtzite CdSe Nanocrystal Structures [D] . Weeks, Nathan John. 2019

机译：量子点特性的有效计算：修正电荷平衡在纤锌矿CdSe纳米晶体结构的大包容性组中的应用
6. Low-Frequency Dielectric Relaxation in Structures Based on Macroporous Silicon with Meso-Macroporous Skin-Layer [O] . Rene Castro, Yulia Spivak, Sergey Shevchenko, 2021

机译：基于大孔硅的结构低频介电弛豫具有中间型大孔硅层
7. Influence of local electric fields on the photoluminescence of CdS nanocrystals on the oxidized macroporous silicon surface [O] . L. Karachevtseva, S. Kuchmii, O. Lytvynenko, 2015

机译：局部电场对氧化大孔硅表面CDS纳米晶体光致发光的影响

Light-emitting structures of CdS nanocrystals in oxidized macroporous silicon

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