TAILIEUCHUNG - Báo cáo hóa học: " Solvothermal Synthesis and Characterization of Chalcopyrite CuInSe2 Nanoparticles"

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 and Characterization of Chalcopyrite CuInSe2 Nanoparticles | Nanoscale Res Lett 2010 5 217-223 DOI s11671-009-9468-6 NANO EXPRESS Solvothermal Synthesis and Characterization of Chalcopyrite CuInSe2 Nanoparticles Huiyu Chen Seong-Man Yu Dong-Wook Shin Ji-Beom Yoo Received 5 October 2009 Accepted 13 October 2009 Published online 1 November 2009 to the authors 2009 Abstract The ternary I-III-VI2 semiconductor of CuInSe2 nanoparticles with controllable size was synthesized via a simple solvothermal method by the reaction of elemental selenium powder and CuCl as well as InCl3 directly in the presence of anhydrous ethylenediamine as solvent. X-ray diffraction patterns and scanning electron microscopy characterization confirmed that CuInSe2 nanoparticles with high purity were obtained at different temperatures by varying solvothermal time and the optimal temperature for preparing CuInSe2 nanoparticles was found to be between 180 and 220 C. Indium selenide was detected as the intermediate state at the initial stage during the formation of pure ternary compound and the formation of copper-related binary phase was completely deterred in that the more stable complex Cu C2H8N2 2 was produced by the strong N-chelation of ethylenediamine with Cu . These CuInSe2 nanoparticles possess a band gap of eV calculated from UV-vis spectrum and maybe can be applicable to the solar cell devices. Keywords CuInSe2 Nanoparticles Solvothermal method Characterization Solar cells H. Chen . Yoo School of Advanced Materials Science Engineering BK21 Sungkyunkwan University Suwon 440-746 Republic of Korea . Yu . Shin . Yoo H SKKU Advanced Institute of Nanotechnology SAINT Sungkyunkwan University Suwon 440-746 Republic of Korea e-mail jbyoo@ Introduction The development of new energy resources has been of great interest to materials scientists in recent years because the traditional fossil fuels were gradually exhausted. Many efforts have been focused on renewable energy materials including photovoltaic electric generators.

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