Silicon Nanocrystals Prepared by Femtosecond Laser Ablation in solution under different ablation time

被引：2

作者：

Yu, Jingyang ^{[1
]}

Hao, Huilian ^{[1
]}

Zhang, Rong ^{[1
]}

Zheng, Wenxiang ^{[1
]}

Wu, Wenshun ^{[1
]}

机构：

[1] Shanghai Univ Engn Sci, Sch Mat Engn, Shanghai, Peoples R China

来源：

2017 INTERNATIONAL SYMPOSIUM ON APPLICATION OF MATERIALS SCIENCE AND ENERGY MATERIALS (SAMSE 2017) | 2018年 / 322卷

基金：

中国国家自然科学基金;

关键词：

PHOTOLUMINESCENCE; NANOPARTICLES;

D O I：

10.1088/1757-899X/322/2/022049

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Spherical silicon (Si) nano-crystals (NCs) were prepared through pulsed femtosecond laser ablating of porous silicon power immersed in 1-hexene. Compared to bulk Si, Raman spectra of Si NCs show a redshift and an asymmetrical broadening. High resolution transmission electron microscopy measurements show that Si particles were dispersed uniformly in 1-hexene. FTIR spectra showed that the Si nanoparticles were passivated by organic molecules. Based on the room temperature photoluminescence (PL) excitation and PL decay curves, we assign blue PL to localized excitons through oxygen associated surface states from the colloids Si NCs. Because of the good surface passivation for colloidal silicon NCs, the quantum yield increases with extending ablation time.

引用

页数：6

共 18 条

[1] Silicon nanocrystal conjugated polymer hybrid solar cells with improved performance
Ding, Yi
Gresback, Ryan
Liu, Qiming
Zhou, Shu
Pi, Xiaodong
Nozaki, Tomohiro
[J]. NANO ENERGY, 2014, 9 : 25 - 31
[2] Silicon quantum dots: surface matters
Dohnalova, K.
Gregorkiewicz, T.
Kusova, K.
[J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 2014, 26 (17)
[3] Surface brightens up Si quantum dots: direct bandgap-like size-tunable emission
Dohnalova, Katerina
Poddubny, Alexander N.
Prokofiev, Alexei A.
de Boer, Wieteke D. A. M.
Umesh, Chinnaswamy P.
Paulusse, Jos M. J.
Zuilhof, Han
Gregorkiewicz, Tom
[J]. LIGHT-SCIENCE & APPLICATIONS, 2013, 2 : e47 - e47
[4] Luminescent passive-oxidized silicon quantum dots as biological staining labels and their cytotoxicity effects at high concentration
Fujioka, Kouki
Hiruoka, Masaki
Sato, Keisuke
Manabe, Noriyoshi
Miyasaka, Ryosuke
Hanada, Sanshiro
Hoshino, Akiyoshi
Tilley, Richard D.
Manome, Yoshinobu
Hirakuri, Kenji
Yamamoto, Kenji
[J]. NANOTECHNOLOGY, 2008, 19 (41)
[5] Classification and control of the origin of photoluminescence from Si nanocrystals
Godefroo, S.
Hayne, M.
Jivanescu, M.
Stesmans, A.
Zacharias, M.
Lebedev, O. I.
Van Tendeloo, G.
Moshchalkov, V. V.
[J]. NATURE NANOTECHNOLOGY, 2008, 3 (03) : 174 - 178
[6] Origin of blue photoluminescence from colloidal silicon nanocrystals fabricated by femtosecond laser ablation in solution
Hao, H. L.
Wu, W. S.
Zhang, Y.
Wu, L. K.
Shen, W. Z.
[J]. NANOTECHNOLOGY, 2016, 27 (32)
[7] Silicon Nanoparticles Produced by Femtosecond Laser Ablation in Ethanol: Size Control, Structural Characterization, and Optical Properties
Kuzmin, Petr G.
Shafeev, Georgy A.
Bukin, Vladimir V.
Garnov, Sergei V.
Farcau, Cosmin
Carles, Robert
Warot-Fonrose, Benedicte
Guieu, Valerie
Viau, Guillaume
[J]. JOURNAL OF PHYSICAL CHEMISTRY C, 2010, 114 (36) : 15266 - 15273
[8] Understanding the Parameters Affecting the Photoluminescence of Silicon Nanoparticles
Llansola Portoles, Manuel J.
Pis Diez, Reinaldo
Dell'Arciprete, Maria L.
Caregnato, Paula
Jose Romero, Juan
Martire, Daniel O.
Azzaroni, Omar
Ceolin, Marcelo
Gonzalez, Monica C.
[J]. JOURNAL OF PHYSICAL CHEMISTRY C, 2012, 116 (20) : 11315 - 11325
[9] Influence of Liquid Medium on Optical Characteristics of the Si Nanoparticles Prepared by Submerged Electrical Spark Discharge
Mardanian, Mehdi
Tarasenko, Nikolai V.
Nevar, Alena A.
[J]. BRAZILIAN JOURNAL OF PHYSICS, 2014, 44 (2-3) : 240 - 246
[10] Photo luminescent 1-2 nm Sized Silicon Nanoparticles: A Surface-Dependent System
Romero, Juan J.
Llansola-Portoles, Manuel J.
Laura Dell'Arciprete, Maria
Rodriguez, Hernan B.
Moore, Ana L.
Gonzalez, Monica C.
[J]. CHEMISTRY OF MATERIALS, 2013, 25 (17) : 3488 - 3498

← 1 2 →