Investigating the interfacial properties of halide perovskite/TiO_x heterostructures for versatile photocatalytic reactions under sunlight

Abstract

Heterostructures of metal halide perovskites and TiOx are efficient photocatalytic materials owing to combination of each compound’s advantages: high absorption coefficient and long charge-carrier lifetime in perovskites, and efficient photocatalytic...

Recent progress in photovoltaic and thermoelectric applications of coupled colloidal quantum dot solids: insights into charge transport fundamentals

“…Unlike bulk CsPbI 3 which are quite unstable in ambient conditions, nanocrystalline CsPbI 3 is relatively more stable due to their inherent surface strain [95].Tuning the active layer thicknesses in tandem solar cells with Cs 0.25 FA 0.75 PbI 3 and CsPbI 3 as the active layers a PCE as high as 15.52% [96]could be achieved. The first stable CsPbI 3 QD based solar cells were demonstrated where they proposed removal of long chain ligands in a magic' non polar solvent methyl acetate (MeOAc) and these solar cells showed a promising photo conversion efficiency (PCE) of 10.77% [105]. Treating the perovskite QD surface with MeOAc saturated with a variety of halide salts (AX) and treating the QD film with FAI which helped reach an QDSC of 13.43% [106,107].…”

Perovskite Nanocrystals In Situ Encapsulated in TiO2 Microspheres for Stable CO2 Photoreduction in Water

“…Furthermore, the typically complex and environmentally unfriendly synthesis process of perovskite NCs presents an additional challenge to their application in this field. At present, titanium dioxide, as a chemically stable semiconductor, has been demonstrated as the matrix material to improve the photocatalytic performance and can build band energy offset with photocatalysts to form heterojunctions. − Given the n-type nature and significantly different work functions of both titanium dioxide and CsPbX 3 NCs, there is a high likelihood of forming an S-scheme heterojunction between them . However, so far, developing a method to synthesize a stable and environmentally friendly S-scheme, the CsPbX 3 NCs/titanium dioxide heterojunction catalyst remains an unresolved challenge.…”

Principles, mechanism, and identification of S‐scheme heterojunction for photocatalysis: A critical review

“…3 Therefore, much effort has been devoted to increasing the photocatalytic ecoefficiency of TiO 2 by doping, 4 surface hybridization, 5 co-deposition of noble metals, 6 and the formation of heterostructures. [7][8][9][10][11][12] Among these methods, the formation of heterostructure is an effective strategy for the promotion of charge separation and increasing photocatalytic activity.…”