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Nanocrystals of CdSe Formed by the Pressure Cycle Method |
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| Authors: | J GonzáLez Ch Power J C Chervin G Hamel E Snoeck |
| Institution: | 1. ICMUV, Departamento de Fisica Aplicada , Universidad de Valencia, Edificio de Investigacion , c/Dr. Moliner 50, Burjasot (Valencia) , E-46100 , Spain;2. Centro de Estudios de Semiconductors, Facultad de Ciencias , Universidad de Los Andes , Mérida , Venezuela E-mail: jesusg@ciens.ula.ve;3. Centro de Estudios de Semiconductores, Facultad de Ciencias , Universidad de Los Andes , Mérida , Venezuela;4. Physique des Millieux Condenses (UA782), Tour 13, E4 , Université P. et M. Curie , 4 Place Jussieu, Paris Cedex 05 , 75252 , France;5. CEMES , Université Paul Sabatier , Toulouse , France |
| Abstract: | CdSe nanocrystals were prepared by the pressure cycle method using the Paris-Edinburgh cell up to 7 GPa. The recovered samples are nanocrystals in the cubic phase (zinc-blende structure) and were characterized using transmission electron microscopy (TEM), electron diffraction and Raman scattering. Transmission electron micrographs shows that these nanocrystals are nearly spherical with diameters ranging from 20 to 50 nm. The Raman scattering measurement confirm the existence of CdSe nanocrystals in the cubic phase (ZB). |
| Keywords: | Semiconductors Quantum Dots High Pressure Phase Transitions |