A Perovskite Photovoltaic Mini-Module-CsPbBr<sub>3</sub> Photoelectrochemical Cell Tandem Device for Solar-Driven Degradation of Organic Compounds
Seul‐Yi Lee, Patricio Serafini, Sofia Masi, Andrés F. Gualdrón‐Reyes, Camilo A. Mesa, Jhonatan Rodríguez‐Pereira, Sixto Giménez, Hyo Joong Lee, Iván Mora‐Seró
Abstract
High Resolution Image Download MS PowerPoint Slide 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 (CsPbBr 3 ) perovskite was directly formed on the surface of mesoporous titanium dioxide (meso-TiO 2 ) film using a two-step spin-coating process. This photoelectrode recorded a photocurrent of up to 3.02 ± 0.03 mA/cm 2 under standard AM 1.5G (100 mW/cm 2 ) illumination through an optimization process such as introducing a thin aluminum oxide (Al 2 O 3 ) 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 (MAPbI 3 ) 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.