Synthesis and characterization of CdSe/ZnS core-shell quantum dots immobilized on solid substrates through laser irradiation

被引：6
作者：
Gyoergy, E. [1 ,2 ]
Perez del Pino, A. [3 ]
Roqueta, J. [1 ]
Ballesteros, B. [1 ]
Miguel, A. S. [4 ]
Maycock, C. [4 ]
Oliva, A. G. [4 ]
机构：
[1] CSIC, ICN, CIN2, Bellaterra 08193, Spain
[2] Natl Inst Lasers Plasma & Radiat Phys, Bucharest 76900 V, Romania
[3] CSIC, Inst Ciencia Mat Barcelona, ICMAB, Bellaterra 08193, Spain
[4] Univ Nova Lisboa, Inst Tecnol Quim & Biol, P-2781901 Oeiras, Portugal
来源：
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2012年 / 209卷 / 11期
关键词：
core-shell quantum dots; immobilization; laser processing; luminescence; POLYMER THIN-FILMS; EVAPORATION MAPLE; NANOCRYSTALS; DEPOSITION; ABLATION; NANOPARTICLES; ZNS; SI; MECHANISM; GROWTH;
D O I：
10.1002/pssa.201127749
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
CdSe/ZnS core-shell quantum dots (QDs) have been immobilized onto solid substrates by matrix assisted pulsed laser evaporation (MAPLE). An UV KrF* (lambda = 248 nm, tau(FWHM) similar or equal to 25 ns) excimer laser source was used for irradiations of the composite MAPLE targets. The targets were prepared by the dispersion of the CdSe/ZnS QDs in a solvent with high absorption at the incident laser radiation. The dependence of the surface morphology, crystalline structure, chemical composition, and functional properties of the laser transferred CdSe/ZnS QDs on the processing conditions as incident laser fluence value and ambient atmosphere inside the irradiation chamber was investigated. The possible physical mechanisms implied in the laser ablation process were identified. (C) 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
引用
收藏
页码：2201 / 2207
页数：7
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