文献类型：期刊文献

英文题名：Steric hindrance effects on the retention of pressure-induced emission toward scintillators

作者：Zhao, Dianlong[1];Cong, Ming[1];Liu, Zhun[2];Ma, Zhiwei[1];Wang, Kai[3];Xiao, Guanjun[1];Zou, Bo[1]

机构：[1]Jilin Univ, Coll Phys, State Key Lab Superhard Mat, Changchun 130012, Peoples R China;[2]Shaoxing Univ, Dept Phys, Shaoxing 312000, Peoples R China;[3]Liaocheng Univ, Sch Phys Sci & Informat Technol, Shandong Key Lab Opt Commun Sci & Technol, Liaocheng 252000, Peoples R China

年份：2023

卷号：4

期号：6

外文期刊名：CELL REPORTS PHYSICAL SCIENCE

收录：SCI-EXPANDED(收录号：WOS:001043595400001)、、Scopus(收录号：2-s2.0-85162078828)、WOS

基金：This work is supported by the National Key R & amp;D Program of China (2019YFE0120300), the National Science Foundation of China (12174144, 21725304, and 12174146), the Special Construction Project Fund for Shandong Province Taishan Scholars, the Jilin Provincial Science & amp; Technology Development Program (20220101002JC), and the China Postdoctoral Science Foundation (2021M690065). This work was mainly performed at the SSRF.

语种：英文

外文关键词：high pressure; pressure-induced emission; scintillators; steric hindrance

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