By a News Reporter-Staff News Editor at Physics Week -- A new study on Chalcogens is now available. According to news reporting originating in Dalian, People's Republic of China, by VerticalNews journalists, research stated, "Sulfur metal-organic complex Pb(S2CNEt2)(2) is synthesized with Pb(NO3)(2) and Na(S2CNEt2).3H(2)O as reactants in deionized water. Under the protection of argon, PbS quantum dots are synthesized by pyrolysis of the precursor Pb(S2CNEt2)(2) in oleic and octadecene mixed solution."
The news reporters obtained a quote from the research from Dalian Maritime University, "Four samples a, b, c, and d of PbS quantum dots are synthesized on the condition that the reaction times are 30, 60, 90, and120 min, respectively. Infrared spectrum of the precursor Pb(S2CNEt2)(2) shows that two sulfur atoms of the ligand Na(S2CNEt2).3H(2)Ohave successfully coordinated with Pb-2. X-ray powder diffraction and transmission electron microscopy results show that the PbS nano crystals are of pure cubic phase structure, and are well-dispersed spherical particles. UV-visible absorption spectrum and photoluminescence spectra of PbS quantum dots show that absorption spectrum and photoluminescence spectra both have red-shift along with reaction time extending. This indicates that absorption spectrum and photoluminescence spectra can be modulated by optimizing the thermal decomposition reaction time. The emission peak of sample is located at 1080 nm, which is matched to the silicon solar cell."
According to the news reporters, the research concluded: "It can be used as the fluorescent material of silicon luminescent solar concentrator."
For more information on this research see: Synthesis of near infrared PbS quantum dots by pyrolysis of organometallic sulfur complex. Acta Physica Sinica, 2013;62(20):476-480. Acta Physica Sinica can be contacted at: Chinese Physical Soc, P O Box 603, Beijing 100080, Peoples R China.
Our news correspondents report that additional information may be obtained by contacting Y. Peng, Dalian Maritime Univ, Dept. of Phys, Dalian 116026, People's Republic of China. Additional authors for this research include X.X. Luo, Y. Fu and M.M. Xing.
Keywords for this news article include: Asia, Dalian, Sulfur, Chalcogens, Quantum Dots, Nanotechnology, Quantum Physics, Emerging Technologies, Organometallic Organosol, People's Republic of China
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