jz9b00238_si_003.pdf (2 MB)
Download fileBroad-Band Emission in a Zero-Dimensional Hybrid Organic [PbBr6] Trimer with Intrinsic Vacancies
journal contribution
posted on 2019-03-04, 00:00 authored by Jun Zhou, Mingze Li, Lixin Ning, Ruiling Zhang, Maxim S. Molokeev, Jing Zhao, Songqiu Yang, Keli Han, Zhiguo XiaThe
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)6Pb3Br12 has been discovered,
in which face-sharing PbBr6 trimer 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.
History
Usage metrics
Read the peer-reviewed publication
Categories
Keywords
face-sharing PbBr 6 trimer clusters0 D metal halides6 Pb 3 Br 12broad-band emission mechanismsphotophysical properties0 D blocksPbBr 6understandingIntrinsic Vacanciesspectroscopy analysisBroad-Band Emissiondesign principle134 nmfirst-principles calculationsZero-Dimensional Hybrid Organicoptoelectronic applicationsbulk 0 D materialslow-dimensional metal halides522 nmC 9 NH 20defect-induced luminescence