Intermolecular arrangement facilitated broadband blue emission in group-12 metal (Zn, Cd) hybrid halides and their applications

Photoluminescence and Nonlinear Optical Properties of Two Terpyridine-Based Hybrid Zn/Cd Halides

“…This fast decay of the luminescence is completely inconsistent with the microsecond-level long lifetime of Tpy-Cd and Tpy-Zn . The microsecond-level decay time of Tpy-Cd and Tpy-Zn tends to be attributed to the exciton localized at inorganic metal halide clusters. , These results rule out the possibility of precursor organic salt as a single luminescence center, which mechanism has been found in many Zn/Cd HMHs. , However, the PLE spectrum of [TpyH 3 ]­Cl 3 shows a narrow band with a maximum peak at 434 nm, overlapping well with the low-energy PLE band of Tpy-Cd and Tpy-Zn , so the contribution of [TpyH 3 ] 3+ to their PL properties cannot be ignored as well.…”

“…49,50 These results rule out the possibility of precursor organic salt as a single luminescence center, which mechanism has been found in many Zn/Cd HMHs. 51,52 However, the PLE spectrum of [TpyH 3 ]Cl 3 shows a narrow band with a maximum peak at 434 nm, overlapping well with the low-energy PLE band of Tpy-Cd and Tpy-Zn, so the contribution of [TpyH 3 ] 3+ to their PL properties cannot be ignored as well.…”

Mn(II)-Activated Zero-Dimensional Zinc(II)-Based Metal Halide Hybrids with Near-Unity Photoluminescence Quantum Yield

“…Furthermore, they reported another Zn-based organic-inorganic hybrid metal halide, (P-xd) ZnCl 4 , with white light emission. This compound reached the current maximum white light emission PLQY in Zn-based materials of 23.06% [27]. In addition to broadband white light emission, Zn-based low-dimensional halide materials can also produce other colors of light.…”

Tailoring the π–π stacking interaction among organic cations in hybrid metal halide crystals towards tunable light emission

“…However, in OD OIMHs with Zn 2+ or Cd 2+ as metal centers, the optical emission mostly originates from the electronic transition of the organic component or the self-trapped excitons (STEs). [16][17][18][19][20][21][22] For example, R 2 MCl 4 (M = Zn, Cd; R = (E)-4-styrylpyridinium, C 13 H 12 N + ) 16 and (P-xd)ZnCl 4 and (P-xd)CdCl 4 ((P-xd) = pxylylenediammonium) 17 crystals were reported to have effective green-yellow and blue light emissions contributed by the radiative transition of the organic part. Hence, the arrangement and interaction among organic cations not only determine the structure and phase of 0D OIMHs crystals, but also play a key role in their optical performance exploration.…”