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Chinese Physics B 2013年第10期22卷 571-574页

作者：杨再兴钟伟區澤棠都有为 Nanjing National Laboratory of Microstructures and Department of Physics Nanjing University Department of Physics and Materials Science City University of Hong Kong Chemistry Department Hong Kong Baptist University

Novel hollow ZnxCdl xS spheres that are uniform in size are synthesized through the one-step thermal evaporation of a mixture of Zn and CdS powder. From an X-ray diffraction （XRD） study, the hexagonal wurtzite phase of ZnxCdl_xS is verified, and the Zn mole fraction （x） is determined to be 0.09. According to the experimental results, we propose a mechanism for the growth of Zn0.09Cd0.91S hollow spheres. The results of the cathodoluminescence investigation indicate uniform Zn, Cd, and S distribution of alloyed Zn0.09Cd0.91S, instead of separate CdS, ZnS, or nanocrystals of a core- shell structure. To the best of our knowledge, the fabrication of ZnxCd1-xS hollow spheres of this kind by one-step thermal evaporation has never been reported. This work would present a new method of growing and applying hollow spheres on Si substrates, and the discovery of the Zn0.09Cd0.91S hollow spheres would make the investigation of ZnxCd1-xS micro/nanostructures more interesting and intriguing.

关键词： ZnxCd1-xS hollow spheres semiconductors vapour deposition growth mechanism

Synthesis and electroluminescence properties of tris-[5-choloro-8-hydroxyquinoline]aluminum Al(5-Clq)_3

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Journal of Semiconductors 2015年第6期36卷 35-38页

作者： Rahul Kumar Parag Bhargava Ritu Srivastava Priyanka Tyagi Indian Institute of Technology Bombay National Physical Laboratory

A new electroluminescent material tris- [5-choloro-8-hydroxyquinoline] aluminum has been synthesized and characterized. Solution of this material AI（5-Clq）3 in toluene showed absorption maxima at 385 nm which was attributed to the moderate energy （π-π＊） transitions of the aromatic rings. The photoluminescence spectrum of AI（5-Clq）3 in toluene solution showed a peak at 522 nm. This material shows thermal stability up to 400 ℃. The structure of the device is ITO/0.4 wt%F4-TCNQ doped α-NPD （35 nm） / AI（5-Clq）3 （30 nm） / BCP （6 nm）/ Alq3 （30 nm） / LiF （1 nm） / A1 （150 nm）. This device exhibited a luminescence peak at 585 nm （CIE coordinates, x = 0.39, y = 0.50）. The maximum luminescence of the device was 920 Cd/m2 at 25 V. The maximum current efficiency of OLED was 0.27 Cd/A at 20 V and maximum power efficiency was 0.04 lm/W at 18 V.

关键词： organometallic compounds chemical synthesis vapour deposition photoluminescence spectroscopy electrical properties luminescence

Synthesis and electroluminescence characterization of a new aluminum complex, [8- hydroxyquinoline] bis [2, 2＇bipyridine] aluminum Al(Bpy)2q

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Journal of Semiconductors 2016年第1期37卷 11-15页

作者： Rahul Kumar Ritu Srivastava Punita Singh Indian Institute of Technology Bombay Mumbai 400076 India National Physical Laboratory New Delhi 110022 India

We have synthesized and characterized a new electroluminescent material, [8-hydroxyquinoline] bis[2,2＇bipyridine] aluminum. A solution of this material Al（Bpy）2q in toluene showed absorption maxima at 380 nm,which was attributed to the moderate energy（ π–π＊） transitions of the aromatic rings. The photoluminescence spectrum of Al（Bpy）_2q in the toluene solution showed a peak at 518 nm. This material shows thermal stability up to300 ℃. The structure of the device is ITO/F4-TCNQ（1 nm）/α-NPD（35 nm）/Al（Bpy）2q（35 nm）/ BCP（6 nm）/Alq3（28 nm）/Li F（1 nm）/Al（150 nm）. This device exhibited a luminescence peak at 515 nm（CIE coordinates, xD0.32,yD0.49）. The maximum luminescence of the device was 214 cd/m^2 at 21 V. The maximum current efficiency of OLED was 0.12 cd/A at 13 V and the maximum power efficiency was 0.03 lm/W at 10 V.

关键词： organometallic compounds chemical synthesis vapour deposition photoluminescence spectroscopy electrical properties luminescence

Recent Advances of Laser Coating Technology in China

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Journal of Materials Science & Technology 1992年第5期8卷 313-319页

作者：梁勇李瑞国 Institute of Metal Research Academia SinicaShenyang 110015China Institute of Corrosion and Protection of Metals Academia SinicaShenyang110015China

Recent advances in laser coating technology including laser cladding,laser surface alloying and laser vapour deposition in China are reviewed in this paper.

关键词： laser coating cladding surface alloying vapour deposition