Broad-Band Emission in a Zero-Dimensional Hybrid Organic [PbBr6] Trimer with Intrinsic Vacancies
Broad-Band Emission in a Zero-Dimensional Hybrid Organic [PbBr6] Trimer with Intrinsic Vacancies
复制标题
具有本征空位的零维杂化有机 [PbBr6] 三聚体的宽带发射
DOI：
10.1021/acs.jpclett.9b00238
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发表时间：
2019
影响因子：
5.7
通讯作者：
Xia Zhiguo
中科院分区：
文献类型：
--
作者：
Zhou Jun;Li Mingze;Ning Lixin;Zhang Ruiling;Molokeev Maxim S.;Zhao Jing;Yang Songqiu;Han Keli;Xia Zhiguo
The understanding of broad-band emission mechanisms on low-dimensional metal halides is an urgent need for the design principle of these materials and their photoluminescence tuning. Herein, a new zero-dimensional (0D) organic–inorganic hybrid material (C9NH20)6Pb3Br12has been discovered, in which face-sharing PbBr6trimer clusters crystallize with organic cations (C9NH20+), forming periodic structure with 0D blocks. Broad-band green emission peaking at about 522 nm was observed for this material, with a full width at half-maximum (fwhm) of 134 nm. The emission was attributed to excitons trapped at controlled intrinsic vacancies, and this is the new example in 0D metal halides, also confirmed by spectroscopy analysis and first-principles calculations. Discovery of the single-crystalline hybrid material and observation of defect-induced luminescence extend the scope of bulk 0D materials and understanding of photophysical properties for optoelectronic applications.
