Steric hindrance effects on the retention of pressure-induced emission toward scintillators

• DOI: 10.1016/j.xcrp.2023.101445
• Publication Date: 2023-05-31T14:36:25Z
• Authors: Dianlong Zhao; Ming Cong; Zhun Liu; Zhiwei Ma; Kai Wang; Guanjun Xiao; Bo Zou
• Keywords: Stokes shift

The success in pressure-induced emission (PIE) from hybrid perovskites greatly facilitates the potential development of high-efficiency white-light-emitting diodes and scintillators. However, its reversibility essentially inhibits practical applications. Furthermore, urgent demand for scintillators requests fast decay response time a large Stokes shift that suppresses self-adsorption. Here, we report quantitative steric hindrance effect different organic components perovskites. Moreover, 1-(2-naphthyl)methanamine (NAPH)+ with complex configuration is further introduced to experimentally prepare 2D perovskite (NAPH)2PbCl4 nanoplates. Notably, benefiting increased barrier phase transition associated high index (SEI) 5.98, harvested amorphous exhibits twice more intensity than initial emission, shortened 1.73 ns, an enlarged 260.7 nm. This study establishes correlation between PIE retention hindrance, improving material design synthesis applications