Cấu trúc lỏi/võ và sự phát huỳnh quang của dây nanô silic

Bài viết tìm hiểu việc tổng hợp dây nano silic bằng phương pháp bốc bay nhiệt, cấu trúc của chúng và sự liên quan của cấu trúc này đến việc phát huỳnh quang của dây Si đo ở nhiệt độ phòng. | 063-067 1 2 1 1 1 1 1 2 -6- -12-2016 1100 0 0 C. K SiNWs T Abstract Silicon nanowires SiNWs were synthesized on Si 111 surfaces using the vapor liquid solid technique at high temperature ranging from 1100 0C to 1200 0C. Si C mixture powders were used as the material sources. Scanning electron microscope images were revealed that the Si nanowires had few tens nanometer of diameter. The Si-core SiOx-shell structure of the nanowires was investigated via transmission electron microscopy. The photoluminescence of the nanowires at room temperature demonstrated a quantum confinement effect because of the reduced diameter of the nanowires. Keywords SiNWs thermal evaporation method core shell structure Tel 0962490411 Email thuyiop@ 063-067 -6 0 0 0 0 0 0 0 0 0 0 063-067 x 0 0 x 2 2 0 2 2 x x 1-x x x 2 x 063-067 x 1 Y. Wan J. Sha B. Chen Y. Fang Z. Wang and Y. Recent Pat. Nanotechnol. vol. 3 no. 1 pp. 1 9 Jan. 2009. 2 S. Chen A. van den Berg and E. T. Carlen nalysis of silicon Sensors Actuators B Chem. vol. 209 pp. 486 489 2015. 3 C. H. Peters a. R. Guichard a. C. Hryciw M. L. nanowire solar cells with photon-harvesti J. Appl. Phys. vol. 105 no. 12 p. 124509 2009. x 4 C. K. Chan H. Peng G. Liu K. McIlwrath X. F. -performance Nat. Nanotechnol. vol. 3 no. 1 pp. 31 5 Jan. 2008. 5 D. W. Kwak H. Y. Cho and . Yang synthesized by Au Si island-catalyzed chemical vapor Phys. E Low-dimensional Syst. Nanostructures vol. 37 no. 1 2 pp. 153 157 Mar. 2007. 6 X. T. Zhou J. Q. Hu C. P. Li D. D. D. Ma C. S. Lee d Chem. Phys. Lett. vol. 369 no. 1 2 pp. 220 224 Feb. 2003. C 7 Fei Zhao Dan-dan Zhao Shao-long Wu Guo-an Cheng and Rui-ting Zheng abrication and Electron Field Emission of Silicon Nanowires Synthesized by J. Korean Phys. Soc. vol. 55 no. 61 p. 2681 Dec. 2009. x 8 in the fabrication of silicon nanowire array Nanotechnology vol. 17 no. 15 pp. 3768 3774 2006. 9 and photoluminescence property of silicon carbon nanowires synthesized by the thermal .