Preparation of Si nanoparticles by laser ablation in liquid and their application as photovoltaic material in quantum dot sensitized solar cell

26th Symposium on Plasma Sciences for Materials

物理学;材料科学

Chewchinda, P.^1 ; Hayashi, K.^1 ; Ichida, D.^2 ; Seo, H.^2 ; Uchida, G.^2 ; Shiratani, M.^2 ; Odawara, O.^1 ; Wada, H.^1

Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan^1

Department of Electronics, Faculty of Information Science and Electrical Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan^2

关键词: Average size;    Electrical impedance spectroscopy;    Laser ablation in liquid;    Photovoltaic materials;    Quantum dot-sensitized solar cells;    Silicon nanoparticles;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/518/1/012023/pdf
DOI  :  10.1088/1742-6596/518/1/012023

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Quantum dot sensitized solar cell was fabricated using silicon nanoparticles prepared by laser ablation in liquid. The obtained particles are spherical and have an average size of 6 nm. These particles were utilized as photosensitizing material in solar cell with polysulfide as an electrolyte. The conversion efficiency of solar cell with silicon nanoparticles was 5.3 times higher than the one with only TiO2 particles. Electrical impedance spectroscopy also revealed the decrease in resistance in the former case led to higher current density than the latter one.