Clean Tin Oxide via Volatile Additive Engineering for High‐performance Perovskite Photovoltaics
SnO 2 is a benchmark electron transport material for perovskite solar cells (PSCs). However, SnO 2 films from the conventional chemical bath deposition (CBD) are limited by impurities and defects that accelerate non‐radiative recombination and compromise device stability. Here, we present a volatile additive en...