Sb2Se3 quantum dot sensitized liquid junction solar cells prepared by solvothermal reactions

• Main Authors: Jhen-Ye Wu, 吳振曄
• Other Authors: 李明威
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/87032682060115467878

碩士 === 國立中興大學 === 奈米科學研究所 === 101 === We want to use the Sb2Se3 QDs be the photosensitizer .We synthesized the Sb2Se3 quantum dot on the surface of a nanoporous TiO2 by solvothermal.We want to confirm this material is Sb2Se3 and its crystallinity and morphology, so we do the x-ray diffraction(XRD) and the Transmission Electron Microscopy(TEM).The QDs size is 10-15 nm. The optical properties of these Sb2Se3 QDs were characterized by UV-Vis spectroscopy.The photoelectrode including a TiO2 under layer ,TiO2 working area,scattering layer,I-/I-3 electrolyte. We change the reacted time about 13hrs,16hrs and 20hrs.The best condition is reacted 16 hrs. We use the polyiodide electrolyte,because the polysulfide electrolyte will reacted with the counterelectrode (Pt). The best yielded a power conversion efficiency is 0.77%,an open circuit voltage of 0.51V,short-circuit current of 2.75mA/cm2.