Glasses doped with PbS nanocrystals

被引：23

作者：

Xiang, Weidong ^{[1
,2
]}

Tang, Shanshan ^{[2
]}

Zhang, Xiyan ^{[2
]}

Liang, Xiaojuan ^{[1
]}

机构：

[1] Wenzhou Univ, Wenzhou 325035, Zhejiang, Peoples R China

[2] Changchun Univ Sci & Technol, Changchun 130022, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 471卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

Nonlinear glass; PbS nanocrystals; Sol-gel processes; Optical properties; NONLINEAR-OPTICAL PROPERTIES; QUANTUM DOTS; LASER;

D O I：

10.1016/j.jallcom.2008.04.026

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

5.74Na(2)O-21.38B(2)O(3)-72.88SiO(2) glasses doped with semiconductor 1% wt PbS nanocrystals were fabricated via a sol-gel route. The formation of PbS nanocrystals in the glass matrix was proven by X-ray photoelectron spectroscopy (XPS). The HRTEM images showed that the PbS crystals existed as nanocrystals with a narrow distribution diameter at 3.5 nm. Furthermore, Fast Fourier transformation (FFT) demonstrated the existence of PbS with face-centered cubic (FCC) structure. Comparing with the bulk PbS, the absorption edge in the optical absorption spectra of the glass doped with PbS nanocrystals exhibited a blue shift with an obvious quantum size effect. The glass had a nonlinear refractive index (gamma) of -2.03 x 10(-14) cm(2)/GW and a nonlinear absorption coefficient (beta) of 7.05 x 10(-10) cm/GW based on Z-scan technique measurement. (c) 2008 Elsevier B. V. All rights reserved.

引用

页码：498 / 501

页数：4

共 12 条

[1] Investigation of nonlinear optical properties of organic dye by Z-scan technique using He-Ne laser [J].

Ali, QM ;

Palanisamy, PK .

OPTIK, 2005, 116 (11) :515-520

[2] Strong quantum confinement effects in polymer-based PbS nanostructures prepared by ion-exchange method [J].

Babu, KS ;

Vijayan, C ;

Devanathan, R .

MATERIALS LETTERS, 2004, 58 (7-8) :1223-1226

[3] PbS-doped mesostructured silica films with high optical nonlinearity [J].

Buso, D ;

Falcaro, P ;

Costacurta, S ;

Guglielmi, M ;

Martucci, A ;

Innocenzi, P ;

Malfatti, L ;

Bello, V ;

Mattei, G ;

Sada, C ;

Amenitsch, H ;

Gerdova, I ;

Haché, A .

CHEMISTRY OF MATERIALS, 2005, 17 (20) :4965-4970

[4] Size-dependent extinction coefficients of PbS quantum dots [J].

Cademartiri, Ludovico ;

Montanari, Erica ;

Calestani, Gianluca ;

Migliori, Andrea ;

Guagliardi, Antonietta ;

Ozin, Geoffrey A. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (31) :10337-10346

[5] Optical properties of IV-VI quantum dots embedded in glass: Size-effects [J].

Dantas, N. O. ;

Qu, Fanyao ;

Monte, A. F. G. ;

Silva, R. S. ;

Morais, P. C. .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 2006, 352 (32-35) :3525-3529

[6] Thermal lens and Z-scan measurements: Thermal and optical properties of laser glasses - A review [J].

Jacinto, C. ;

Messias, D. N. ;

Andrade, A. A. ;

Lima, S. M. ;

Baesso, M. L. ;

Catunda, T. .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 2006, 352 (32-35) :3582-3597

[7] Femtosecond Z-scan investigation of nonlinear refraction in surface modified PbS nanoparticles [J].

Li, HP ;

Liu, B ;

Kam, CH ;

Lam, YL ;

Que, WX ;

Gan, LM ;

Chew, CH ;

Xu, GQ .

OPTICAL MATERIALS, 2000, 14 (04) :321-327

[8] Microstructural and nonlinear optical properties of silica-titania sol-gel film doped with PbS quantum dots [J].

Martucci, A ;

Fick, J ;

Schell, J ;

Battaglin, G ;

Guglielmi, M .

JOURNAL OF APPLIED PHYSICS, 1999, 86 (01) :79-87

[9] X-ray photoelectron spectroscopy of sodium borosilicate glasses [J].

Miura, Y ;

Kusano, H ;

Nanba, T ;

Matsumoto, S .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 2001, 290 (01) :1-14

[10]

NACES PM, 2006, J NONCRYST SOLIDS, V352, P3633

← 1 2 →