Yttrium-substituted nanocrystalline TiO<sub>2</sub>photoanodes for perovskite based heterojunction solar cells
We report the use of Y(3+)-substituted TiO2 (0.5%Y-TiO₂) in solid-state mesoscopic solar cells, consisting of CH₃NH₃PbI₃ as the light harvester and spiro-OMeTAD as the hole tran...