Zinc-porphyrin-imide type sensitized TiO2 nanotube arrays as photoactive electrode in a dyes sensitized solar cell

International Symposium on Current Progress in Functional Materials

Syafaat, F.^1 ; Gunlazuardi, J.^1

Department of Chemistry, Faculty of Mathematics, Natural Sciences Universitas Indonesia, Kampus UI Depok, Depok

16424, Indonesia^1

关键词: Backside illumination;    Photoconversion efficiency;    Photocurrent density;    Sensitized solar cells;    TiO2 nanotube arrays;    TiO2 nanotubes;    TiO2/Zinc-porphiyin-imide;    Zinc porphyrins;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/188/1/012023/pdf
DOI  :  10.1088/1757-899X/188/1/012023

来源: IOP

【 摘 要 】

In this work, TiO2nanotube was prepared by rapid breakdown electrooxidation of Ti foil in electrolyte containing 0.15 M HClO4. The obtained TiO2nanotube bundling powder was calcinated at 450°C for 3 hours, then characterized by SEM, XRD, UV-Vis DRS, and BET. Zinc-porphyrin-imide dyes was deposited into TiO2nanotube by immersion of TiO2nanotube in zinc-porphyrin-imide solution for 24 hours. Free zinc-porphyrin-imide dyes shows characteristics of absorption spectra in visible region at 439 nm and 620 nm. Meanwhile, when it was immobilized to TiO2-nanotube, the absorption peak shifted to 421 nm and 640 nm. The zinc-porphyrin-imide/TiO2electrode showed an excellent response toward the visible light with the typical photocurrent density of 1.1 mA/cm2. When the fabricated photoelectrode was assembled in a typical Dyes Sensitize Solar Cell (DSSC), the I-V curve showed photoconversion efficiency of the assembled zinc-porphyrin-imide/TiO2DSSC was 1.914% (front side illumination) and 1.147% (backside illumination), respectively.