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wet-chemical Synthesis and Applications of Semiconductor Nanomaterial-Based Epitaxial Heterostructures

Nano-Micro Letters 2019年第4期11卷 508-535页

作者： Junze Chen Qinglang Ma Xue-Jun Wu Liuxiao Li Jiawei Liu Hua Zhang Center for Programmable Materials School of Materials Science and EngineeringNanyang Technological University50 Nanyang AvenueSingapore 639798Singapore State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023People’s Republic of China Department of Chemistry City University of Hong KongKowloonHong KongPeople’s Republic of China

Semiconductor nanomaterial-based epitaxial heterostructures with precisely controlled compositions and morphologies are of great importance for various applications in optoelectronics,thermoelectrics,and *** now,various kinds of epitaxial heterostructures have been *** this minireview,we will first introduce the synthesis of semiconductor nanomaterial-based epitaxial heterostructures by wet-chemical *** architectures based on different kinds of seeds or templates are illustrated,and their growth mechanisms are discussed in ***,the applications of epitaxial heterostructures in optoelectronics,catalysis,and thermoelectrics are ***,we provide some challenges and personal perspectives for the future research directions of semiconductor nanomaterial-based epitaxial heterostructures.

关键词： Heterostructure Nanoarchitecture Epitaxy wet-chemical synthesis Semiconductor nanomaterial

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wet-chemical synthesis and characteristics of Au nanoshell

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Science China Chemistry 2005年第5期48卷 431-435页

作者： LIU Zhongxin1,2, SONG Hongwei1, YU Lixin1,2, YANG Linmei1,2 & PAN Guohui1,2 1. Key Laboratory of Excited State Physics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China 2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China Key Laboratory of Excited State Physics Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences Changchun China Graduate School of the Chinese Academy of Sciences Beijing China

Gold nanoshells were prepared by an easy wet-chemical method, with Ag nanoparticles used as the templates. Transmission electron microscopy (TEM) indicated that the shells were sphere in shape, the size was homogenous, being about 20 nm, and no hard ag-glomerates were observed. The plasma resonance absorption of gold was tuned from visible to near-infrared (NIR) with the increased volume of HAuCl4. The temperature grads (?T) of the gold nanoshell hydrosol under the exposure of an 808-nm optical fiber laser with different power den-sities were measured. The highest ?T was 30℃ (5 W/cm2, irradiation area was 2 cm2). This kind of gold nanoshell hydrosol is a promising material to be used in biomedicine such as photo-thermal cancer therapy, and its special photothermal convert property will photothermally trigger drug release.

关键词： wet-chemical synthesis, Au, nanoshell, NIR absorption, photothermal conversion.

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Effect of lanthanum,neodymium on piezoelectric,dielectric and ferroelectric properties of PZT

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Journal of Advanced Ceramics 2013年第1期2卷 37-41页

作者： Benudhar SAHOO Prasanta Kumar PANDA Materials Science Division CSIR-National Aerospace LaboratoriesKodihalliP.B.No.1779Bangalore 560017India

The effect of La^(3+)and Nd^(3+)on piezoelectric,dielectric and ferroelectric properties of PZT(Pb(Zr_(0.53)Ti_(0.47))O_(3))was *** powders were prepared by“wet-chemical”route followed by calcination at 800℃for 4 *** analysis of the calcined powders confirms the tetragonal phase in the undoped PZT,which gradually decreases with the dopant concentration and the appearance of rhombohedral phase *** study of sintered pellets reveals the decrease in grain size with the increase in dopant concentration beyond 0.02 mol Nd^(3+)and 0.03 mol La^(3+)*** piezoelectric constant(d_(33))and dielectric properties were maximum for 0.02 mol Nd^(3+)and 0.03 mol La^(3+)*** remnant polarization of La^(3+)-doped sample was higher than Nd^(3+)-doped sample,and the sample with combined dopants shows intermediate remnant polarization(P_(r)).Based on the above study,it is concluded that La^(3+)is more effective than Nd^(3+),including in a mixture of La^(3+)and Nd^(3+)dopants.

关键词： lead zirconate titanate wet-chemical piezoelectric dielectric ferroelectric

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