Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Solvothermal Synthesis, Structure and Optical Property of Nanosized CoSb3 Skutterudite | Nanoscale Res Lett 2010 5 1698-1705 DOI s11671-010-9700-4 NANO EXPRESS Solvothermal Synthesis Structure and Optical Property of Nanosized CoSb3 Skutterudite Latha Kumari Wenzhi Li Jian Yu Huang Paula P. Provencio Received 6 May 2010 Accepted 13 July 2010 Published online 28 July 2010 The Author s 2010. This article is published with open access at Abstract Binary skutterudite CoSb3 nanoparticles were synthesized by solvothermal method. The nanostructuring of CoSb3 material was achieved by the inclusion of various kinds of additives. X-ray diffraction examination indicated the formation of the cubic phase of CoSb3. Structural analysis by transmission electron microscopy analysis further confirmed the formation of crystalline CoSb3 nanoparticles with high purity. With the assistance of additives CoSb3 nanoparticles with size as small as 10 nm were obtained. The effect of the nanostructure of CoSb3 on the UV-visible absorption and luminescence was studied. The nanosized CoSb3 skutterudite may find application in developing thermoelectric devices with better efficiency. Keywords Nanostructures Chemical synthesis Electron microscopy Optical properties Introduction Novel thermoelectric TE materials are potential candidates for power generation and solid-state cooling applications as they can directly convert thermal energy into electrical energy or vice versa 1 . A TE device has no moving parts produces no noise has high reliability and exhausts no waste. The performance of TE device can be quantified by the dimensionless figure of merit ZT a2r j T where a is L. Kumari W. Li Department of Physics Florida International University Miami FL 33199 USA e-mail J. Y. Huang P. P. Provencio Sandia National Laboratories Center for Integrated Nanotechnologies CINT Albuquerque NM 87185 USA the Seebeck coefficient a and j are the electrical and thermal conductivities respectively and T is the temperature in Kelvin. Among a number of TE .
