Tin Iodide Perovskite Thin Film

Environmentally friendly materials for perovskite solar cells

Overview

　Currently, most perovskite solar cells use lead (Pb)-based materials, but tin (Sn)-based alternatives are gaining attention for their environmental benefits and potential performance improvements. Sn offers higher light absorption efficiency without Pb, but challenges such as easy oxidation and the need for environmentally harmful organic solvents remain.
　To solve these issues, the inventor utilized ascorbic acid (AA) and found that adding it to a Sn aqueous solution greatly improves water solubility and prevents Sn oxidation. The precursor solution prepared using this method was mixed with MAI (methyl ammonium iodide) and coated onto a substrate, resulting in a highly oriented perovskite layer.
　This innovation paves the way for eco-friendly solar cells that use green processes, representing a major step toward sustainable energy solutions.

Features・Outstandings

Product Application

・Perovskite solar cells

IP Data

IP No.　 ： Not published
Inventor ： YOKOYAMA Koji, YOKOYAMA Shun, TAKAHASI Hideyuki
keyword ： Perovskite, solar cells, Environmentally friendly, Sn(Tin), Lead free, Solvent-free