Synergistic electronic coupling/cross-talk between the isolated metal halide units of zero dimensional heterometallic (Sb, Mn) halide hybrid with enhanced emission

Abstract

Heterometallic 0D metal halide hybrids, consisting of more than one kind of metal halide units, are anticipated to manifest synergistic effects on the photo-physical properties of the constituent metal halide...

Luminescence Enhancement of CsMnBr3 Nanocrystals through Heterometallic Doping

“…For example, Biswas et al prepared zerodimensional tris SbMnCl crystals, in which the improved PLQY was due to the energy transfer from an SbCl 6 donor to a luminescent MnCl 6 acceptor. 27 The strategy also was utilized to design an all-inorganic Cs 4 MnBi 2 Cl 12 perovskite single crystal, profiting from the effective energy transfer from BiCl units to MnCl 6 , achieving 51-fold increments in PLQY compared with the monometal CsMnCl 3 •2H 2 O. 28 The synergistic effects show the huge potential to promote emission of Mn 2+ ions, but whether it works in CsMnBr 3 NCs remains to be verified.…”

“…Recently, it is reported that the synergistic effects between different metals can enhance the PLQY of heterometallic halide hybrids. , Heterometallic halide hybrids consist of more than one type of metal halide polyhedral units, thus making it possible to combine the PL features of different metal halide units. For example, Biswas et al prepared zero-dimensional tris SbMnCl crystals, in which the improved PLQY was due to the energy transfer from an SbCl 6 donor to a luminescent MnCl 6 acceptor .…”

“…On the other hand, the PL intensity of undoped and doped is comparable when excited by low energy photons. One plausible explanation is that the electronic structure of Pb-doped CsMnBr 3 NCs is modulated by the synergistic effect between [MnBr 6 ] 2– units and [PbBr 6 ] 2– units …”

“…Recently, it is reported that the synergistic effects between different metals can enhance the PLQY of heterometallic halide hybrids. , Heterometallic halide hybrids consist of more than one type of metal halide polyhedral units, thus making it possible to combine the PL features of different metal halide units. For example, Biswas et al prepared zero-dimensional tris SbMnCl crystals, in which the improved PLQY was due to the energy transfer from an SbCl 6 donor to a luminescent MnCl 6 acceptor . The strategy also was utilized to design an all-inorganic Cs 4 MnBi 2 Cl 12 perovskite single crystal, profiting from the effective energy transfer from BiCl 6 units to MnCl 6 , achieving 51-fold increments in PLQY compared with the monometal CsMnCl 3 ·2H 2 O .…”

“…One plausible explanation is that the electronic structure of Pbdoped CsMnBr 3 NCs is modulated by the synergistic effect between [MnBr 6 ] 2− units and [PbBr 6 ] 2− units. 27 In order to explain the influence of synergistic effect, the photophysical process of Pb-doped CsMnBr 3 NCs is depicted in Figure 3f. We supposed that the energy gaps are filled between high energy excited states [ 4 T 1 (P), 4 E(D), 4 T 2 (D)], and a quasi-continuous conduction band is formed due to the synergistic effect of [PbBr 6 ] 4− units and [MnBr 6 ] 4− units in Pbdoped CsMnBr 3 NCs.…”