  Metal halide perovskites single-crystalline thin films (SCTFs) have recently
emerged as promising materials for the next generation of optoelectronic
devices due to their superior intrinsic properties. However, it is still
challenging to transfer and integrate them with other functional materials for
hybrid multilayer devices because of their substrate-dependent growth. Herein,
a method that allows the SCTFs to be transferred with high quality onto
arbitrary substrates has been reported. By introducing hydrophobic treatment to
the growth substrates, the adhesion between SCTFs and growth substrates is
reduced. Meanwhile, anti-solvent intercalation technique is used to peel off
SCTFs from the growth substrates intactly. Finally, centimeter-scale perovskite
SCTF has been successfully transferred to target substrate. This work opens up
a new route to transfer large-scale perovskite SCTFs, providing a platform to
widen the applications of perovskite SCTFs in large-scale hybrid multilayer
optoelectronic devices.
