A solvothermal route to size- and shape-controlled CdSe and CdTe nanocrystals |
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| Institution: | 1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Graduate School of Chinese Academy of Sciences, Changchun 130022, PR China;2. Department of Chemistry, Northeast Normal University, Changchun 130022, PR China;1. Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany;2. Chair of Materials Science (CMS), Otto Schott Institute of Materials Research (OSIM), Friedrich Schiller University Jena, Löbdergraben 32, 07743 Jena, Germany;3. Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany;1. School of Physics & Material Science, Anhui University, Hefei 230601, PR China;2. School of Electronic & Information Engineering, Hefei Normal University, Hefei 230601, PR China;3. National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, PR China;4. School of Mechanical & Electronic Engineering, Chuzhou University, Chuzhou 239000, PR China;1. Key Laboratory of Sensor Analysis of Tumor Marker (Ministry of Education), Key Laboratory of Inorganic Synthesis and Applied Chemistry, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China;2. College of Science and Technology, Agricultural University of Hebei, Cangzhou 061100, PR China;1. Lomonosov Moscow State University, Moscow, Russia;2. Kurnakov Institute of General and Inorganic Chemistry RAS, Moscow, Russia;3. Semenov Institute of Chemical Physics RAS, Moscow, Russia;4. Topchiev Institute of Petrochemical Synthesis RAS, Moscow, Russia;1. Technische Universität Berlin, Institut für Optik und Atomare Physik, Straße des 17. Juni 135, 10623 Berlin, Germany;2. EMAT, Electron Microscopy for Materials Science, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium |
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| Abstract: | The size- and shape-controlled CdSe and CdTe nanocrystals, which exhibit obvious quantum confinement effect, have been synthesized by a solvothermal route. It is found that initial precursor concentrations are key factors in controlling the shape of the resulting nanocrystals. Moreover, the obtained nanocrystals are all of zinc blende structure, regardless of their sizes and shapes. A possible mechanism for the formation and growth of the nanocrystals is put forward. It is inferred that the adhesion and subsequent recrystallization of nanocrystals with an assistance of remaining monomers should be a major reason for formation and growth of the elongated nanocrystals. |
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