Organic–inorganic hybrid metal halides for room-temperature phosphorescence

The recent emergence of organic-inorganic hybrid metal halides (MHs) with room-temperature phosphorescence (RTP) has attracted tremendous attention due to their promising properties. Great progress has been made in developing MH materials with high-performance RTP, but a systematic study on MH materials with RTP feature is lacking. This review highlights recent advances in MH RTP materials, including lead-based hybrid metal halides, lead-free hybrid metal halides and ion-doped hybrid metal halides. Additionally, the photophysical properties and the applications of MH RTP materials are discussed in detail. These RTP materials have been successfully applied in data encryption and security, intelligent sensing and optoelectronic devices. This review not only provides the basic principles for designing RTP hybrid metal halides, but also highlights the future research prospects of RTP hybrid metal halides. This review offers many effective strategies for developing hybrid metal halides with excellent RTP properties, thus satisfying practical applications.