1 research outputs found
Graphene Interface Engineering for Perovskite Solar Modules: 12.6% Power Conversion Efficiency over 50 cm<sup>2</sup> Active Area
Interfaces between perovskite solar
cell (PSC) layer components
play a pivotal role in obtaining high-performance premium cells and
large-area modules. Graphene and related two-dimensional materials
(GRMs) can be used to “on-demand” tune the interface
properties of PSCs. We successfully used GRMs to realize large-area
(active area 50.6 cm<sup>2</sup>) perovskite-based solar modules (PSMs),
achieving a record high power conversion efficiency of 12.6%. We on-demand
modulated the photoelectrode charge dynamic by doping the mesoporous
TiO<sub>2</sub> (mTiO<sub>2</sub>) layer with graphene flakes. Moreover,
we exploited lithium-neutralized graphene oxide flakes as interlayer
at the mTiO<sub>2</sub>/perovskite interface to improve charge injection.
Notably, prolonged aging tests have shown the long-term stability
for both small- and large-area devices using graphene-doped mTiO<sub>2</sub>. Furthermore, the possibility of producing and processing
GRMs in the form of inks opens a promising route for further scale-up
and stabilization of the PSM, the gateway for the commercialization
of this technology