Charge Carrier Recombination Dynamics in MAPb(BrCl) Single Crystals.

Understanding carrier recombination processes in MAPb(BrCl) crystals is essential for their photoelectrical applications. In this work, carrier recombination dynamics in MAPb(BrCl) single crystals were studied by steady-state photoluminescence (PL), time-resolved photoluminescence (TRPL), and time-resolved microwave photoconductivity (TRMC). By comparing TRPL and TRMC, we find TRPL of MAPb(BrCl) ( < 0.

Two-dimensional graphitic carbon nitride/N-doped carbon with a direct Z-scheme heterojunction for photocatalytic generation of hydrogen.

Photocatalysts with a direct Z-scheme heterojunction are promising by virtue of the effectively enhanced separation of charge carriers, high retention of redox ability and the absence of backward photocatalytic reactions. Their activity depends on band alignment and interfacial configurations between two semiconductors for charge carrier kinetics and the effective active sites for photochemical reactions. Herein, a two-dimensional (2D) graphitic carbon nitride/N-doped carbon (CN/NC) photocatalyst is synthesized by a gas template (NHCl)-assisted thermal condensation method.

bridging nanotwinned all-solid-state Z-scheme g-CN/CdCO/CdS heterojunction photocatalyst by metal oxide for H evolution.

Nanotwin and all-solid-state (ASS) Z-scheme heterojunction engineering are two widely used strategies for improving photocatalytic activity in H production. However, both strategies fail to produce a satisfactory effect when used alone due to their own limitations. Hence, combining nanotwin and ASS Z-scheme heterojunction engineering is expected to improve photocatalytic activity effectively.