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Journal of materials chemistry. C, Materials for optical and electronic devices, 2024-05, Vol.12 (2), p.7426-7434
Ort / Verlag
Cambridge: Royal Society of Chemistry
Erscheinungsjahr
2024
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Recent advances in luminescent materials have highlighted zero-dimensional (0D) hybrid metal halides as highly efficient candidates. Notably, In
3+
-based organic-inorganic metal halides (OIMHs) are increasingly recognized as promising materials for solid-state light emission. However, the relatively low light yields of these materials significantly limit their application in advanced optoelectronic devices. In this study, we designed a novel 0D hybrid indium halide, (C
13
H
14
N
3
)
3
InBr
6
, where C
13
H
14
N
3
represents 1,3-diphenylguanidine. This compound features a structure in which the halogen anionic polyhedron is completely isolated by large guanidine cations and is regularly arranged at considerable distances on these cations, thus forming an almost ideal host-guest structure. Impressively, the 0D indium halide exhibits intrinsic broadband yellow-orange light emission, achieving a photoluminescence quantum yield (PLQY) of 86.12%, which is the highest PLQY ever reported for In-based OIMHs. Additionally, we successfully fabricated white-light-emitting diodes (WLEDs) using (C
13
H
14
N
3
)
3
InBr
6
as a yellow phosphor, thereby demonstrating the potential of novel guanidine-based indium halides in solid-state lighting applications.
Recent advances in luminescent materials have highlighted zero-dimensional (0D) hybrid metal halides as highly efficient candidates.