Laser-induced nanocomposite formation for printed nanoelectronics

被引：33

作者：

Antolini, F

Ghezelbash, A

Esposito, C

Trave, E

Tapfer, L

Korgel, BA

机构：

[1] CR ENEA Faenza, I-48018 Faenza, Italy

[2] Univ Texas, Texas Mat Inst, Dept Chem Engn, Austin, TX 78712 USA

[3] Univ Texas, Ctr Nano & Mol Sci & Technol, Austin, TX 78712 USA

[4] CR ENEA, I-72100 Brindisi, Italy

[5] Univ Padua, Dept Phys, I-35131 Padua, Italy

来源：

MATERIALS LETTERS | 2006年 / 60卷 / 08期

基金：

美国国家科学基金会;

关键词：

nanomaterials; laser processing; semiconductor; TEM; photoluminescence;

D O I：

10.1016/j.matlet.2005.10.093

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Us nanocrystals are formed by regioselective thermal decomposition of metal alkanethiolates in a polymer matrix by selective heating of a polystyrene foil filled with the cadmium-(bis)-thiolate precursor using focused laser beam irradiation. Us nanocrystal formation in the polymer was investigated by photoluminescence emission and excitation (PL and PLE) spectroscopy and transmission electron microscopy (TEM). The PLE spectra show a band edge at 420 run for the irradiated area, indicating the presence of nanocrystalline CdS of size of about 2-3 nm. The PL exhibits an emission band at 535 nm that is also characteristic of nanometer-sized CdS. TEM images confirm the presence and size of CdS nanoparticles. The surface temperature was estimated theoretically considering the relationships between the temperature, time and power of the laser pulses. Nanoparticle formation via laser probe is also discussed in terms of possible utilization of other probes (e.g., electrons, etc.), inducing nanocrystal formation for the realization of conducting nanowires embedded in non-conductive matrix materials useful for nanoelectronic devices or conductive plastic. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：1095 / 1098

页数：4

共 23 条

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