Structural Influence on Exciton Formation and the Critical Role of Dark Excitons in Polymeric Carbon Nitrides (Adv. Energy Mater. 13/2025)

Polymeric Carbon Nitrides In article number 2405549, Timo Jacob and co-workers illustrate the crucial role of dark excitons in modulating interlayer charge transfer in ionic carbon nitrides. Unlike conventional bright excitons, dark excitons can be equally significant, enabling efficient charge separation and influencing photocatalytic performance through tailored π-orbital alignment.