The Study of Sol-gel Prepared Sb2S3 Containing Quantum Dot Sensitized Solar Cell

• Main Authors: Hsun Fu, 傅循
• Other Authors: 斯頌平
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/96645669117000411411

碩士 === 國立中興大學 === 奈米科學研究所 === 105 === Sensitized solar cells containing Sb2S3 quantum dots semiconductor are prepared by Sol-gel method. The sol solution, which is prepared by mixing of Titanium isopropoxide, alcohol and the Sb2S3 quantum particles, is spin coated on Fluorine doped Tin Oxide glass. The thickness, the morphology, and the crystallization of the coated films are investigated by optical microscope, SEM and X-ray diffraction. The efficiencies of the cells are obtained by measuring I-V curves. The efficiency of the best cell is 0.24%, while, the other parameters of this cell are Voc=0.38V, Jsc=1.30mA/cm2, and FF=47.73%. This cell is prepared according to the following procedures: Sodium sulfide is used as precursor of sulfide, sol solution is prepared with TiO2(mol)/Sb2S3(mol)=1:0.1 in alcohol with 1M concentration, and pH value is 4, the film is coated with 6 layers with coating speed 2000rpm, and then the film is subjected to 450oC heat treatment for 2hrs, and sodium ions are removed by soaking in 0.1M SbCl3 solution for 10mins. The charge transportation mechanism is elucidated by ac impedance measurements. The micrograph of SEM shows the aggregation phenomenon of TiO2 particles.