A Perovskite Photovoltaic Mini-Module-CsPbBr3 Photoelectrochemical Cell Tandem Device for Solar-Driven Degradation of Organic Compounds

• Published in: ACS energy letters Vol. 8; no. 10; pp. 4488 - 4495
• Main Authors: Lee, Seul-Yi, Serafini, Patricio, Masi, Sofia, Gualdrón-Reyes, Andrés F., Mesa, Camilo A., Rodríguez-Pereira, Jhonatan, Giménez, Sixto, Lee, Hyo Joong, Mora-Seró, Iván
• Format: Journal Article
• Language: English
• Published: American Chemical Society 13.10.2023
• Subjects: Letter
• ISSN: 2380-8195; 2380-8195
• DOI: 10.1021/acsenergylett.3c01361

Recently, halide perovskites have been widely explored for high-efficiency photocatalysis or photoelectrochemical (PEC) cells. Here, in order to make an efficient photoanode electrode for the degradation of pollutants, concretely 2-mercaptobenzothiazole (MBT), nanoscale cesium lead bromide (CsPbBr3) perovskite was directly formed on the surface of mesoporous titanium dioxide (meso-TiO2) film using a two-step spin-coating process. This photoelectrode recorded a photocurrent of up to 3.02 ± 0.03 mA/cm2 under standard AM 1.5G (100 mW/cm2) illumination through an optimization process such as introducing a thin aluminum oxide (Al2O3) coating layer. Furthermore, to supply high voltage for efficient oxidation of MBT without an external bias, we developed a new photovoltaic/PEC tandem system using a methylammonium lead iodide (MAPbI3) based mini-module consisting of three solar cells interconnected in series and confirmed its successful operation. This approach looks very promising due to its applicability to various PEC reactions.