Polyaniline/Ag2S-CdS Nanocomposites for Counter Electrodes of Dye-Sensitized Solar Cells

• Main Authors: Meng Kuo, 郭孟
• Other Authors: Rong-Ho Lee
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/64029173649963298269

碩士 === 國立中興大學 === 化學工程學系所 === 104 === In this study, we prepared Ag2S-CdS nanocomposites (AC11) with equal mole of silver nitrate and caladium acetate by the chemical co-precipitation. SEM and X-ray diffraction meter (XRD) were used to study the morphology of AC11. Moreover, the AC11 and polyaniline (PANI) based nanocomposite PACI was prepared by the in-situ polymerization of aniline in the AC11 containing reaction solution. The AC11 nanoparticles were dispersed in uniform in the PANI based nanorods. In addition, the AC11 and PANI based nanocomposite PACO was prepared by the co-precipitation of AC11 nanoparticles on the surface of the PANI based nanorods. The chemical structure characterization, thermal properties, morphology, and electrochemical behavior of AC11, PANI, PACI, and PACO were studied. The PANI, PACI, and PACO coated FTO glasses were prepared by the spin coating method for the counter electrodes (PANI-S, PACI-S, and PACO-S) of dye-sensitized solar cells (DSSCs). The highest short-circuit current density (Jsc = 12.17 mA/cm2), open-circuit voltage (Voc = 0.72 V) and photo-energy conversion efficiency (η = 5.13%) were obtained for the DSSC fabricated from the PACI coated counter electrode. On the other hand, the PACI coated counter electrode (PANI-D) was prepared by the chemical deposition and in-situ polymerization of aniline in AC11 containing solution. The photovoltaic properties (Jsc = 12.25 mA/cm2 , Voc = 0.63V, and η% = 4.81%) of the PANI-D based DSSC were slightly lower than those of the DSSC fabricated from PANI-S electrode.