1 research outputs found
Probing the Intrinsic Thermal and Photochemical Stability of Hybrid and Inorganic Lead Halide Perovskites
We
report a careful and systematic study of thermal and photochemical
degradation of a series of complex haloplumbates APbX<sub>3</sub> (X
= I, Br) with hybrid organic (A<sup>+</sup> = CH<sub>3</sub>NH<sub>3</sub>) and inorganic (A<sup>+</sup> = Cs<sup>+</sup>) cations under
anoxic conditions (i.e., without exposure to oxygen and moisture by
testing in an inert glovebox environment). We show that the most common
hybrid materials (e.g., MAPbI<sub>3</sub>) are intrinsically unstable
with respect to the heat- and light-induced stress and, therefore,
can hardly sustain the real solar cell operation conditions. On the
contrary, the cesium-based all-inorganic complex lead halides revealed
far superior stability and, therefore, provide an impetus for creation
of highly efficient and stable perovskite solar cells that can potentially
achieve pragmatic operational benchmarks