|
|
|
|
|
|
| Synthesis and Fluorescence Property of CdS/ZnO Composite Structure |
| HUANG Jie, HU Chen-li, MAO Jian-min, SHEN Wei-min, WANG Le, YU Jing |
| College of Optical & Electronic Science and Technology, China Jiliang University, Hangzhou 310018, China |
|
|
|
|
Abstract In order to enhance the fluorescence intensity and reliability of CdS nanoparticles, synthesis, fluorescence property of CdS by different mass ratio of Cd to S, and influence of stabilizer were studied. CdS/ZnO composite structures were synthesized in alkaline condition using the hydrothermal synthesis method. In addition, all samples were tested by XRD, fluorescence spectroscopy and SEM. The results showed that CdS nanoparticles and CdS/ZnO composite nanoparticles were single and relatively pure. ZnO coated on the surface of CdS. Under the 328.5 nm ultraviolet excitation, emission spectrum was narrow and symmetrical, and the emission peak was at 463 nm. The fluorescence intensity of CdS/ZnO composite structure nanoparticles increased obviously. The best mass ratio of CdS to ZnO was 1∶1, whose fluorescence efficiency was 11% higher than that of CdS nanoparticles. The results of first principle study indicated that the energy band of Cd-4d，S-3p and Cd-5s were comprised of 5, 3 and 1 energy levels, respectively, in the band structure of CdS. By comparing partial density of states in different orbits, it can be seen that the boundary of conduction band was mainly comprised of Cd-5s orbit, the boundary of valence band was mainly comprised of S-3p orbit, and the electronic states near -7 eV was mainly comprised of Cd-4d orbit. In the band structure of ZnO, valence band on top was mainly comprised of O-2p electron, the region near Fermi level was mainly comprised of Zn-3d electron, conduction band was mainly comprised of Zn-3d and O-2p electron. In CdS/ZnO composite structures, energy levels of Zn-3d electron were near energy levels of S-3p electron and presented a type-Ⅱ band structure, thus narrowing band-gap. The electron transition became easier, depressing the recombination of electrons and holes, and improving the efficiency of fluorescence.
|
|
Received: 2015-08-13
Accepted: 2016-01-22
|
|
|
|
[1] Limin Q, Helmut C, Markus A. Nano Letters, 2001, 1(2): 61.
[2] Venkatram N, Narayana Rao N, Akundi M A. Optics Express, 2005, 13(3): 867.
[3] Murray C B, Norris D J, Bawendi M G. Journal of the American Chemical Society, 1993, 115(19): 8706.
[4] Kowshik M, Dashmukh N, Vogel W, et al. Biotechnology and Bioengineering, 2002, 78(5): 583.
[5] Wang Shiming, Liu Ping, Wang Xuxu, et al. Langmuir, 2005, 21(25): 11969.
[6] Spanhel L, Haase M, Weller H, et al. J. Am. Chem. Soc., 1987, 109: 5649.
[7] Hirai T, Suzuki K, Komasawa I. Journal of Colloid and Interface Science, 2001, 244(2): 262.
[8] WANG Le, LIU Yang, XU Guo-tang, et al. Acta Physica Sinica(物理学报), 2012, 61(6): 063103.
[9] SHEN De-zhen, MEI Zeng-xia, LIANG Hui-li, et al(申德振, 梅增霞, 梁会力, 等). Chinese Journal of Luminescence(发光学报), 2014, 35(1): 1.
[10] Schrer P, Krüger P, Pollmann J. Physical Review B, 1993, 47(12): 6971.
[11] Schleife A, Fuchs F, Furthmüller J, et al. Physical Review B, 2006, 73(24): 245212.
[12] CAI Hong, DU Qing-bo, CAO Wen-gen(蔡 红, 杜庆波, 曹稳根). Journal of Functional Materials(功能材料), 2013, 44(6): 791. |
| [1] |
LIAO Yi-min1, YAN Yin-zhou1, WANG Qiang2*, YANG Li-xue3, PAN Yong-man1, XING Cheng1, JIANG Yi-jian1, 2. Laser-Induced Growth Device and Optical Properties of ZnO
Microcrystals[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(10): 3000-3005. |
| [2] |
YANG Chang-hu, YUAN Jian-hui. Effects of Thickness on Spectral Properties of Undoped ZnO Thin Films[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 41(09): 2835-2838. |
| [3] |
WANG Shi-xia, HU Tian-yi, YANG Meng. Study on Preparation of Ag-Doped ZnO Nanomaterials and Phase Transition at High Pressure Using Diamond Anvil Cell and Raman Spectra[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 41(02): 484-488. |
| [4] |
YE Jia-wen1, CHANG Jing-jing1*, GENG Yi-jia2, CUI Yuan1*, XU Shu-ping2, XU Wei-qing2, CHEN Qi-dan3. Detection of I- in Water by the Hg2+@CDs Fluorescent Sensor[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(11): 3489-3493. |
| [5] |
QIAO Jin, XU Chang-shan*, ZHANG Hai-jiao, SHAO Hai-ling, ZHENG Bo-wen, HE Hui-min. Effects of ZnO NPs on the Photosynthetic Processes of Egeria najas[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2019, 39(05): 1495-1502. |
| [6] |
REN Meng-jia1, 2, DING Cheng-qiao1, 2, Naoshi Kondo3, WU Hua-lin1, 2, CUI Di1, 2*. Characterization of Chilled Pork with Three-Dimensional Fluorescence Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(11): 3434-3438. |
| [7] |
LIU Ting, WANG Wen-qi, LIU Zhi-qun, ZHAO Yan-li, YI Ding-rong. Applications of CdSe/ZnS Quantum Dot in Optical Fiber Evanescent-Wave pH Sensing[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(06): 1944-1948. |
| [8] |
YIN Wen-yi1, LIU Yu-zhu1,2*, ZHANG Qi-hang1, LI Bing-sheng3*, QIN Chao-chao4. Optical Excitation Characteristics of ZnO under the Radiation Fields[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(05): 1348-1352. |
| [9] |
LIU Jun-shao1, HUANG Lei2, XIE Wen-ju1, LIN Hao1, CHEN Yi-ping2, PAN Hai-bo2*. Preparation of Four Phenoxy Phthalocyanine Zinc/ZnO Composites with in-situ Method by DBU Liquid Phase Catalyst and Its Photocatalytic Selectivity[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(05): 1486-1491. |
| [10] |
LIU Xiao-xing, WEI Qi-gong, WANG Si-tong, HUANG Yi, ZHANG Ting-ting, QI Chao-yue, LI Jia. Identification of Marine Oil Spills by Fisher Discriminant Based on Discrete Wavelet Transform[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(11): 3479-3484. |
| [11] |
WU Cheng-ling1, GUO Jun-hong1, 2, YAO Heng-bin1, PAN Ling-nan1, WANG Fei1, WU Wen-qi1, JI Tong1, HU Fang-ren1, 2*. Study on the Photoluminescence Properties of ZnO Single Crystal[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(06): 1700-1702. |
| [12] |
WU Wen-tao1, CHEN Yu-nan1，2，3, XIAO Xue2,3, YANG Rui-fang2,3, ZHAO Nan-jing2,3* . Study on Three-Dimensional Fluorescence Spectral Characteristics of Heterocyclic Pesticides in Different Environmental Conditions[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(03): 788-793. |
| [13] |
ZHOU Jian-ping1*, LI Xin-yu1, ZHU Feng2, CHEN Xiao-hong2*, XU Zheng3 . Efficient Polymer Solar Cells Using ZnO Electron Transporting Layer with Layered Magentron Sputtered ZnO Film and/or Modified with Functionalized Carbon Nanopartilces[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(02): 517-521. |
| [14] |
CHEN Jing-han, YAO Wen-qing*, ZHU Yong-fa . Photoluminescence of Silicon Nitride-Based ZnO Thin Film Developed with RF Magnetron Sputtering[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(02): 391-393. |
| [15] |
ZHU Lin1, CUI Hai-ning1*, B. Marí2, WANG Yi-xin1, WANG Rong1*, LI Xiao-xia1. Growth and Characteristics of ZnO Needles in the Surface of “Platanus Occidentalis” Made of Al2O3, Au and ZnO[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2016, 36(10): 3394-3398. |
|
|
|
|
