Effect of Holding Time on Particle Size and Morphology of AgNPs/SiO2 Prepared by Rapid Thermal Annealing Method
XU Yanru1, WANG Yanqing2,*, CHEN Huanming2, MA Jun2, HOU Yi2
1 School of Mechanical Engineering, Ningxia University, Yinchuan 750021, China 2 School of Physics and Electronic-Electrical Engineering, Ningxia University, Yinchuan 750021, China
Abstract: Rapid thermal annealing is an advantageous method for preparation of plasmonic nanostructures, which offers low cost and controllable size and geometry. The mechanism of nanoparticles evolving with holding time via rapid thermal annealing is significant for turning plasmonic effect of nanostructures. In this work, the morphology evolution of silver nanoparticles on quartz substrate (AgNPs/SiO2) under different holding time was studied. The size and geometry of AgNPs were characterized by using the field emission scanning electron microcopy and by using statistical method. It is found that when holding time was 15 s, the continuous silver film transformed into uniform Ag islands and secondary nanoparticles with respective mean size of (152±46) nm and (53±13) nm. This is attributed to that AgNPs inherit the morphology features of original defects produced during silver film sputtering. After annealing, the channel networks in the continuous silver film diffusely shrink to strip islands. The secondary nucleuses originally grew in the channel network turn into small nanoparticles, which are called the secondary nanoparticles. When the holding time increases from 15 s to 1 min and 5 min, the strip islands change into spherical crown particles with size decreased and quantity unchanged. When annealed for 10 min, the number of secondary nanoparticles substantially drops resulting from the evaporation during the ripening process. It is found that AgNPs annealed for 5 min exhibits significant plasmonic effect in the surface enhanced Raman scattering measurement of crystal violet molecules, with content as low as 10-8 mol/L. It reveals that the geometry and size of AgNPs can be turned via regulating the holding time, providing a theoretical base for preparation of plasmonic substrate by rapid thermal annealing. It also helps for applications of plasmonic nanostructures into solar cells and trace detection.
1 Maier S A. Plasmonics:fundamentals and applications, Springer Science & Business Media, UK, 2007, pp. 21. 2 Feng S L, Wang J Y, Chen S, et al. Acta Physica Sinica, 2019, 68(14), 147801 (in Chinese). 冯仕靓, 王靖宇, 陈舒, 等. 物理学报, 2019, 68(14), 147801. 3 Kneipp K, Wang Y, Kneipp H, et al. Physical Review Letters, 1997, 78(9), 1667. 4 Xu R, Du L, Adekoya D, et al. Advanced Energy Materials, 2021, 11(15), 2001537. 5 Wang L, Hasanzadeh K M, Meunier M. Advanced Functional Materials, 2020, 30(51), 2005400. 6 Jahn M, Patze S, Hidi I J, et al. The Analyst, 2016, 141(3), 756. 7 Barman B, Dhasmana H, Verma A, et al. Advances in Natural Sciences:Nanoscience and Nanotechnology, 2017, 8(3), 035010. 8 Tiwari S P, Kumar A, Kumar K, et al. New Journal of Chemistry, 2020, 44(45), 19672. 9 Karaman M, Aydın M, Sedani S H, et al. Microelectronic Engineering, 2013, 108, 112. 10 Ji J. Industrial Technology Innovation, 2019, 6(5), 50 (in Chinese). 姬佳林. 工业技术创新, 2019, 6(5), 50. 11 Zhang X, Zhang J, Fan T, et al. Spectroscopy and Spectral Analysis, 2014, 34(9), 2444 (in Chinese). 张晓蕾, 张洁, 范拓, 等. 光谱学与光谱分析, 2014, 34(9), 2444. 12 Xu Y, Wang C, Han X, et al. Journal of Xiamen University (Natural Science), 2016, 55(6), 881 (in Chinese). 许怡红, 王尘, 韩响, 等. 厦门大学学报(自然科学版), 2016, 55(6), 881. 13 Li N, Gao F, Song M, et al. Chinese Journal of Power Sources, 2014, 38(4), 665 (in Chinese). 李宁, 高斐, 宋美周, 等. 电源技术, 2014, 38(4), 665. 14 Mandal P, Sharma S. Renewable and Sustainable Energy Reviews, 2016, 65, 537. 15 Wu Z, Shui S, Zhang X, et al. Materials Reports A:Review Papers, 2019, 33(2), 426 (in Chinese). 吴治涌, 水世显, 张显, 等. 材料导报:综述篇, 2019, 33(2), 426. 16 Li H, Xing Z, Hodúlová E, et al. Materials Reports A:Review Papers, 2020, 34(2), 105 (in Chinese). 李红, 邢增程, Hodúlová E, 等. 材料导报:综述篇, 2020, 34(2), 105. 17 Joyce B, Neave J, Dobson P J, et al. Physical Review B, 1984, 29(2), 814. 18 Li W, Li S. Journal of Thermal Science and Technology, 2007, 6(3), 198 (in Chinese). 李维仲, 李爽. 热科学与技术, 2007, 6(3), 198. 19 Langer J, Jimenez de Aberasturi D, Aizpurua J, et al. ACS Nano, 2020, 14(1), 28.