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Structure, Luminescence and Temperature Detection Capability of [C(NH2)3]M(HCOO)3 (M = Mg2+, Mn2+, Zn2+) Hybrid Organic-Inorganic Formate Perovskites Containing Cr3+ Ions.


ABSTRACT: Metal-organic frameworks are of great interest to scientists from various fields. This group also includes organic-inorganic hybrids with a perovskite structure. Recently their structural, phonon, and luminescent properties have been paid much attention. However, a new way of characterization of these materials has become luminescence thermometry. Herein, we report the structure, luminescence, and temperature detection ability of formate organic-inorganic perovskite [C(NH2)3]M(HCOO)3 (Mg2+, Mn2+, Zn2+) doped with Cr3+ ions. Crystal field strength (Dq/B) and Racah parameters were determined based on diffuse reflectance spectra. It was shown that Cr3+ ions are positioned in the intermediate crystal field or close to it with a Dq/B range of 2.29-2.41. The co-existence of the spin-forbidden and spin-allowed transitions of Cr3+ ions enable the proposal of an approach for remote readout of the temperature. The relative sensitivity (Sr) can be easily modified by sample composition and Cr3+ ions concentration. The luminescent thermometer based on the 2E/4T2g transitions has the relative sensitivity Sr of 2.08%K-1 at 90 K for [C(NH2)3]Mg(HCOO)3: 1% Cr3+ and decrease to 1.20%K-1 at 100 K and 1.08%K-1 at 90 K for Mn2+ and Zn2+ analogs, respectively.

SUBMITTER: Stefanska D 

PROVIDER: S-EPMC10386541 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature

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Structure, Luminescence and Temperature Detection Capability of [C(NH<sub>2</sub>)<sub>3</sub>]M(HCOO)<sub>3</sub> (M = Mg<sup>2+</sup>, Mn<sup>2+</sup>, Zn<sup>2+</sup>) Hybrid Organic-Inorganic Formate Perovskites Containing Cr<sup>3+</sup> Ions.

Stefańska Dagmara D   Kabański Adam A   Vu Thi Hong Quan THQ   Adaszyński Marek M   Ptak Maciej M  

Sensors (Basel, Switzerland) 20230709 14


Metal-organic frameworks are of great interest to scientists from various fields. This group also includes organic-inorganic hybrids with a perovskite structure. Recently their structural, phonon, and luminescent properties have been paid much attention. However, a new way of characterization of these materials has become luminescence thermometry. Herein, we report the structure, luminescence, and temperature detection ability of formate organic-inorganic perovskite [C(NH<sub>2</sub>)<sub>3</sub  ...[more]

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