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Science China Chemistry 2000年第4期43卷 443-448页

作者：张敬波林原尹峰肖绪瑞 Photochemical Laboratory Center of Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100101 China

Interfacial charge transfer kinetics of the nanocrystalline cdse thin film electrodes have been studied in sodium polysulfide solutions by intensity modulated photocurrent spectroscopy (IMPS). The interfacial direct and indirect charge transfer and recombination processes were analyzed in terms of the parameters: normalized steady state photocurrents and surface state lifetimes obtained by measuring the IMPS responses under different applied potentials and different solution concentrations. IMPS responses of polycrystalline cdse thin film electrodes were also presented for comparison.

关键词： intensity modulated photocurrent spectroscopy nanocrystalline cdse electrodes interfacial charge transfer processes.

Dithiol treatments enhancing the efficiency of hybrid solar cells based on PTB7 and cdse nanorods

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Nano Research 2015年第9期8卷 3045-3053页

作者： Weining Luo Tonggang Jiu Chaoyang Kuang Bairu Li Fushen Lu Junfeng Fang Institute of New Energy Technology Ningbo Institute of Material Technology and Engineering (NIMTE) Chinese Academy of Sciences (CAS) Ningbo 315201 China Department of Chemistry College of Science Shantou University Shantou 515063 China

We report the fabrication of polymer/inorganic hybrid solar cells （HSCs） based on cdse nanorods （NRs） and the semiconducting polymer PTB7. The power conversion efficiency of HSCs can be significantly enhanced by engineering the polymer/nanocrystal interface with ethanedithiol （EDT） and 1,4-benzenedithiol （1,4-BDT） treatments and reached 2.58% and 2.79%, respectively. These results were preferable to that of a pyridine-coated NR-based device （1.75%）. This improvement was attributed to the thiol groups of EDT and 1,4-BDT, which can tightly coordinate the Cd ions to form Cd-thialate on cdse NR surfaces, thereby effectively passivating the NR surface and reducing the active layer defects. Therefore, the rate of exciton generation and dissociation was enhanced and led to the improvement of the device performance.

关键词： cdse nanorods,PTSY,ethanedithiol treatments,1,4-BDT treatments,hybrid solar cells

Elastic and Thermodynamic Properties of cdse from First-Principles Calculations

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Communications in Theoretical Physics 2008年第7期50卷 220-226页

作者： TAN Jia-Jin CHENG Yan ZHU Wen-Jun GOU Qing-Quan College of Physical Science and Technology Sichuan University Chengdu 610064 China Laboratory for Shock Wave and Detonation Physics Research Instituteof Fluid Physics Chinese Academy of Engineering Physics Mianyang 621900 China

The lattice parameters, bulk modulus, phase transition pressure, and temperature dependencies of the elastic constants cij of cdse are investigated by using the Cambridge Serial Total Energy Package （CASTEP） program in the frame of Density Functional Theory （DFT）. It is found that the phase transitions from the ZB structure to the RS structure and from WZ structure to RS structure are 2.2 GPa and 2.8 GPa, respectively. Our results agree well with the available experimental data and other theoretical results. The aggregate elastic modulus （B, G, E, A ）, the Poisson＇s ratio （v）, the Griuneisen parameter （γ）, the Debye temperature θD on pressure and temperature are also successfully obtained.

关键词： elastic properties thermodynamic properties density functional theory cdse

Aqueous synthesis of cdse and cdse/CdS quantum dots with controllable introduction of Se and S sources

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Chinese Chemical Letters 2012年第8期23卷 961-964页

作者： Xiao Long Rong Qin Zhao Guan Hong Tao College of Chemistry Chemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China

A new and convenient route is developed to synthesize cdse and core-shell cdse/CdS quantum dots（QDs） in aqueous *** gaseous precursors,H2Se and H2S,generated on-line by reducing SeO 3 2à with NaBH 4 and the reaction between Na 2 S and diluted H2SO 4,are used to form high-quality cdse and cdse/CdS QDs,*** synthesized water-soluble cdse and cdse/CdS QDs possess high quantum yield（3% and 20%） and narrow full-width-at-half-maximum（43 nm and 38 nm）.The synthesis process is easily reproducible with simple apparatus and low-toxic chemicals,and can be readily extended to the large-scale aqueous synthesis of QDs.

关键词： cdse cdse/CdS Quantum dots Aqueous synthesis Gaseous precursors

Selective Synthesis and Advanced Characteristic of cdse Semiconductor Quantum Dots by Aqueous Phase

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Journal of Wuhan University of Technology(Materials Science) 2006年第1期21卷 32-37页

作者：王德平 School of Material Science and Engineering Tongji UniversityShanghai 200092China

This work mainly investigated the influences of some factors, such as, synthesis methods, precursor alteraatives, and vacuum heat-treating process, etc, on the fluorescent characteristics of the semiconductor quantum dots synthesized by aqueous phase. The research results indicate that the fluorescent characteristic of water- solution sample prepared from Na2 SO3 precursor was sensitive to water bath heating time, and specially, its photohuninescence spectrum shows the unique phenomenon of double excitation and emission peaks. Meanwhile, the fluorescent characteristic of water- solution sample prepared from NaBH4 precursor is slightly influenced by water bath heating time, and the sugface of cdse quantum dots could be passivated by the excessive amount of NaBH4 precursor, which results in the effective decrease of surface traps and great enhancement of quantum yield. Furthermore, the fluorescent emission peaks of samples could be sharpened by vacuum heat-treating process, with its spectral full width at half of maximum （FWHM） around 30- 40 run, so the emission peaks become redshifi, of which the intensity greatly increases.

关键词： semiconductor quantum dots cdse synthesis by aqueous phase fluorescence

Study on the Interaction between cdse Quantum Dots and Bovine Serum Albumin with Ultraviolet Visible Absorption Spectroscopy

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Chinese Chemical Letters 2006年第7期17卷 961-964页

作者： He You HAN De Hong HU Jian Gong LIANG Zong Hai SHENG College of Science MOA Key Laboratory of Food Safety Evaluation Huazhong Agricultural University Wuhan 430070

The interaction of cdse quantum dots （QDs） with bovine serum albumin （BSA） has been investigated with ultraviolet visible absorption spectroscopy （UVAS）. It was found that the absorption intensity of cdse QDs significantly decreased after adding BSA solution, showing that cdse QDs were bonded to BSA. The binding molar ratio was 1：1 and the binding constant was 9.7 × 10^6 L mol^-1.

关键词： cdse quantum dots bovine serum albumin interaction.

Probing cytotoxicity of cdse and cdse/CdS quantum dots

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Chinese Chemical Letters 2011年第7期22卷 843-846页

作者： Yan Jie Bao Jun Jun Li Yi Ting Wang Lei Yu Lei Lou Wei Ji Du Zi Qiang Zhu Hui Peng Jian Zhong Zhu Institutes for Advanced Interdisciplinary Research East China Normal University Shanghai 200062 China

Toxicities of cdse and cdse/CdS quantum dots （QDs） synthesized by ultrasound-assisted methods were investigated in vitro and in vivo. Five human cell lines were used to assess the cytotoxicity of as-prepared cdse and cdse/CdS by assays of MTT viability, red blood cell hemolysis, flow cytometry, and fluorescence imaging. The results show that these QDs may be cytotoxic by their influence in S and G2 phases in cell cycles. The cytotoxicity of QDs depends on both the physicochemical properties and related to target cells.

关键词： Cytotoxicity Quantum dots cdse cdse/CdS Cell

Effect of Polyaniline as Hole-Acceptor and Energy-Acceptor on the Photoluminescence of cdse

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Chemical Research in Chinese Universities 2007年第2期23卷 131-134页

作者： ZHUANG Hong LIU Jing-bo ZENG Qing-hui KONG Xiang-gui Colledge of Light Industry and Economics ＆ Management Jilin University Changchun 130062 P. R. China Key Laboratory of Excited State Process Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences Changchun 130033 P. R. China

The results of interaction between cdse quantum dots and polyaniline were reported. Polyaniline effectively decreases the emission of cdse quantum dots, and the cdse luminescence lifetime is decreased by the addition of polyaniline. The mechanism of the emission observed in cdse is assumed to result from the energy transfer and from the combination of surface-trapped electrons and holes energy is transferred from cdse to polyaniline, and polyaniline occupies the hole sites.

关键词： cdse Polyaniline Hole-acceptor Energy-acceptor

Scanning Tunneling Microscopic and Scanning Tunneling Spectroscopic Studies of Nanocrystalline cdse Thin Film

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Chinese Chemical Letters 1997年第9期8卷 831-832页

作者： Yuan LIN Rui Feng LIN Xiao Wen Zhou Jing Bo Zhang Xu Rui Xiao(Institute of Photographic Chemistry, The Chinese Academy of Sciences, Bejing,100101) ACAD SINICA INST PHOTOG CHEMBEIJING 100101PEOPLES R CHINA

Nanocrystalline cdse thin film prepared by chemical solution deposition was imaged in air with a scanning tunnelling microscope(STM). Scanning tunnelling current spectroscopy(STS) was taken at a fixed tip - sample separation. Tunnelling current(i) - voltage(v) curve and differential conductance spectrum show an n-type schottky rectifying behaviour and yield a direct measure of band gap energy. An increase of bandgap energy (1.8 - 2.1eV) was measured indicating energy quantization of this particular thin film.,

关键词： Thin cdse Scanning Tunneling Microscopic and Scanning Tunneling Spectroscopic Studies of Nanocrystalline cdse Thin Film

Biomimetic Synthesis of cdse Quantum Dots through Emulsion Liquid Membrane System of Gas-Liquid Transport

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Chinese Journal of Chemistry 2004年第5期22卷 441-444页

作者：刘璐吴庆生丁亚平柳华杰张保权 Department of Chemistry Tongji University Shanghai 200092 China Department of Chemistry Shanghai University Shanghai 200436 China Center of Technology Tangshan Steel and Iron Co. Ltd Tangshan Hebei 063016 China

The cadmium selenide quantum dots (QD) have been synthesized by template-control in an emulsion liquid membrane system. The system consisted of kerosene as solvent, L152 (dialkylene succinimide) as surfactant, N7301 (trialiphatic amine, Ra, R=C8-C10) as carrier, 0.1 mol/L CdCl2 solution as internal-aqueous phase and H2Se gas as external phase. Additive organic template agent in internal-aqueous phase was necessary to fom cdse QD. The influence of the nature of template and its concentration on sizes of the formed cdse QD has also been studied. Transmission electron microscopy showed that the sizes of the products could be controlled down to 3-4 nm. X-ray diffraction analysis revealed that the crystals had cubic structure. The formation process and the optical properties of cdse QD have also been presented.

关键词： emulsion liquid membrane cdse quantum dot template-control nanoparticle biomimetic synthesis