Molecular relays in nanometer-scale alumina: effective encapsulation for water-submersed halide perovskite photocathodes

Abstract

Halide perovskite (HaP) solar cells have an excellent voltage efficiency (>70%) and a low electron-affinity conduction band minimum, making them prospective candidates to be used as photocathodes in integrated low-cost...

Atomic/molecular layer deposition strategies for enhanced CO2 capture, utilisation and storage materials

“…17(a)–(b)). 414 The HaP-based photoelectrode consisted of a continuous layer of CsPbBr 3 deposited on NiO x and FTO substrates. To enhance its performance, the CsPbBr 3 layer was further coated with the ALD of both titania and alumina.…”

Improving the Stability of Halide Perovskites for Photo‐, Electro‐, Photoelectro‐Chemical Applications

“…The reported single halide perovskites used as photoabsorbers in the PV-type photocathode for the photoelectrochemical CO 2 reduction include MAPbI 3 [288] and CsPbBr 3 . [289] Notably, the mixed halide perovskites, such as double-cation (CsFA) mixed halide perovskite [290] and triple-cation (CsFAMA) mixed halide perovskite, [25] are extensively used as the photoabsorbers in the photoelectrodes for photoelectrochemical CO 2 reduction due to their higher stability than the single-cation halide perovskite. [290] Notably, the suitable charge transport layer, like poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine], [49] can stabilize perovskite PV cells in the process of PEC CO 2 reduction.…”

“…For example, the CMs/Al 2 O 3 internal encapsulation layer can not only improve the stability of the perovskite‐based photocathode but also preserve the electron transfer. [ 289 ] Ag conductive layer generally be embedded between the perovskite and the encapsulation layer to ensure the electronic adhesion and charge transfer for the photoelectrochemical CO 2 reduction. [ 25 ] To further protect the photocathode from electrolyte aqueous solution, the edges of the photocathode are usually sealed with epoxy resin [ 292 ] or parylene‐C coating.…”

“…i) Long-term stability tests of O-BP/FM/perovskite photocathode. Reproduced with permission [289]. Copyright 2021, Springer Nature.…”