Optical, electrical properties and characterization of (C2H5NH3)2CdCl4 compound

Lefi, Ramzi; Nasr, Férid Ben; Hrichi, Haikel; Guermazi, H.

doi:10.1016/j.ijleo.2016.03.055

Cited by 18 publications

(9 citation statements)

References 35 publications

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“…PA 2 CdCl 4 belongs to the Abma crystal space group, a = 7.585(5) Å, b = 7.359(1)Å, c = 25.053(6)Å, Z = 4. All three compounds are consistent with previously reported XRD patterns. − The strongest diffraction peak was shifted from 9.1° to a small angle of 6.8° due to the increase in the spacing between the scored surfaces (100) caused by the growth of the carbon chains of the organic ions, indicating the presence of organic cations and further confirming the universality of the mechanochemical method (Figure b). Typically, we uploaded a video of the grinding MA 2 CdCl 4 :20%Mn 2+ process (Video S1).…”

Section: Resultssupporting

confidence: 89%

Mn-Doped M₂CdCl₄ (M = CH₃NH₃⁺, C₂H₈N⁺, and C₃H₁₀N⁺) Layered Hybrid Perovskite and Its Flexible Film Based on Simple Mechanochemical Synthesis

Xu,

Dong,

et al. 2024

Inorg. Chem.

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Layered hybrid perovskites show significant advantages in the field of optoelectronics. However, the low quantum efficiency and complex preparation methods limit their applications. In this work, we developed a series of perovskite powders with a twodimensional (2D) layered structure of organic−inorganic hybrid metal halides M 2 CdCl 4 :x%Mn (M = CH 3 NH 3 + , C 2 H 8 N + , C 3 H 10 N + ) via facile mechanochemical methods. The prepared manganese Mn-doped MA 2 CdCl 4 produces orange emission at 605 nm under both 254 and 420 nm excitation, which originates from a dual excitation channel competition mechanism, and its excitation channel could be changed with the increase of Mn 2+ ion concentration. Typically, MA 2 CdCl 4 :20%Mn powder exhibits high photoluminescence quantum yield (PLQY) close to 90% at 605 nm due to the organic amine ions enlarging the Mn−Mn interlayer distances. In addition, we prepared MA 2 CdCl 4 :x%Mn@PVA flexible films, which also exhibit good luminescence at 254 nm excitation and were unexpectedly found to have a better response to Cs + , which could be a candidate for anticounterfeiting applications.

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Section: Resultssupporting

confidence: 89%

Mn-Doped M₂CdCl₄ (M = CH₃NH₃⁺, C₂H₈N⁺, and C₃H₁₀N⁺) Layered Hybrid Perovskite and Its Flexible Film Based on Simple Mechanochemical Synthesis

Xu,

Dong,

et al. 2024

Inorg. Chem.

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“…Using similar exciton binding energy values for MA 2 CdX 4 , the optical band gaps can be estimated to be 5.3–5.9 eV for MA 2 CdCl 4 , 4.9–5.5 eV for MA 2 CdBr 4 , and 3.9–4.5 eV for MA 2 CdI 4 . In the literature, there have been only a few optical studies of hybrid organic–inorganic Cd-based halides. , Interestingly, one of the few papers reporting optical properties of hybrid Cd-based halides suggests that the optical band gap of the layered perovskite compound (C 2 H 5 NH 3 ) 2 CdCl 4 is 1.866 eV . In another report, the same authors report a larger band gap value of 3.11 eV for the same compound.…”

Section: Resultsmentioning

confidence: 98%

“…In the literature, there have been only a few optical studies of hybrid organic−inorganic Cd-based halides. 57,58 Interestingly, one of the few papers reporting optical properties of hybrid Cd-based halides suggests that the optical band gap of the layered perovskite compound (C 2 H 5 NH 3 ) 2 CdCl 4 is 1.866 eV. 57 In another report, 58 the same authors report a larger band gap value of 3.11 eV for the same compound.…”

Section: Resultsmentioning

confidence: 99%

“…57,58 Interestingly, one of the few papers reporting optical properties of hybrid Cd-based halides suggests that the optical band gap of the layered perovskite compound (C 2 H 5 NH 3 ) 2 CdCl 4 is 1.866 eV. 57 In another report, 58 the same authors report a larger band gap value of 3.11 eV for the same compound. The discrepancy and the very low optical band gap values reported in these studies given the colorless nature of Cd-halides, especially the chlorides, are likely due to the noticeably poor quality optical absorption data.…”

Section: Resultsmentioning

confidence: 99%

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Synthesis, Crystal and Electronic Structures, and Optical Properties of (CH₃NH₃)₂CdX₄ (X = Cl, Br, I)

et al. 2017

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We report the synthesis, crystal and electronic structures, as well as optical properties of the hybrid organic-inorganic compounds MACdX (MA = CHNH; X = Cl, Br, I). MACdI is a new compound, whereas, for MACdCl and MACdBr, structural investigations have already been conducted but electronic structures and optical properties are reported here for the first time. Single crystals were grown through slow evaporation of MACdX solutions with optimized conditions yielding mm-sized colorless (X = Cl, Br) and pale yellow (X = I) crystals. Single crystal and variable temperature powder X-ray diffraction measurements suggest that MACdCl forms a 2D layered perovskite structure and has two structural transitions at 283 and 173 K. In contrast, MACdBr and MACdI adopt 0D KSO-derived crystal structures based on isolated CdX tetrahedra and show no phase transitions down to 20 K. The contrasting crystal structures and chemical compositions in the MACdX family impact their air stabilities, investigated for the first time in this work; MACdCl is air-stable, whereas MACdBr and MACdI partially decompose when left in air. Optical absorption measurements suggest that MACdX have large optical band gaps above 3.9 eV. Room temperature photoluminescence spectra of MACdX yield broad peaks in the 375-955 nm range with full width at half-maximum values up to 208 nm. These PL peaks are tentatively assigned to self-trapped excitons in MACdX following the crystal and electronic structure considerations. The bands around the Fermi level have small dispersions, which is indicative of high charge localization with significant exciton binding energies in MACdX. On the basis of our combined experimental and computational results, MACdX and related compounds may be of interest for white-light-emitting phosphors and scintillator applications.

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“…This study aims to develop the electric response represents the contribution of the motions of the charge carriers in the electric field, and these motions can be in different forms such as space charge formation, dipole reorientation, charge displacement, and other forms of motions [28][29][30][31][32][33]and we have con-firmed that the conductance formalism satisfies the time-temperature superposition principle. Based on the scaling parameter, we have found that the sample presents a Coulomb interaction between charge carriers.…”

Section: Introductionmentioning

confidence: 99%

Antioxidant activity, Dielectric and Electrical Properties of N-benzyl-N'-(5-methyl-1H-pyrazol-3-yl) propanimidamide.

Louiz,

Labiadh,

Abderrahim

et al. 2023

Preprint

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This article mainly focuses on recent advances in the study of the interesting electronic and biological powers of the N-benzyl-N'-(5-methyl-1H-pyrazol-3-yl) propanimidamide. The selected amidine has been previously synthesized, characterized in a previous publication and we present in this research the study of the antioxidant application, electrical activity and dielectric studies of the cristal. In this context, the amidine and the corresponding imidate were compared with ascorbic acid as a reference and showed an interesting antioxidant power, especially in Ferrous ion chelating (FIC) activity and Hydroxyl Radical (OH.) Scavenging. We also studied electrical activity as a function of frequency, impedance and alternating conductivity. The obtained results showed that the compound can be used in order to complex and impedance spectroscopy showed that synthesized amidine is a good short-range proton conductor. Impedance measurements approve the input of the resistive grain frontier on the conduction mechanism. Then, it evidences the existence of many electrical relaxation phenomena in the studied sample. The dielectric constant is temperature dependent indicating that the crystal is a polar dielectric compound and the dipole orientation is governed by increasing temperature.

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Optical, electrical properties and characterization of (C2H5NH3)2CdCl4 compound

Cited by 18 publications

References 35 publications

Mn-Doped M₂CdCl₄ (M = CH₃NH₃⁺, C₂H₈N⁺, and C₃H₁₀N⁺) Layered Hybrid Perovskite and Its Flexible Film Based on Simple Mechanochemical Synthesis

Mn-Doped M₂CdCl₄ (M = CH₃NH₃⁺, C₂H₈N⁺, and C₃H₁₀N⁺) Layered Hybrid Perovskite and Its Flexible Film Based on Simple Mechanochemical Synthesis

Synthesis, Crystal and Electronic Structures, and Optical Properties of (CH₃NH₃)₂CdX₄ (X = Cl, Br, I)

Antioxidant activity, Dielectric and Electrical Properties of N-benzyl-N'-(5-methyl-1H-pyrazol-3-yl) propanimidamide.

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Optical, electrical properties and characterization of (C2H5NH3)2CdCl4 compound

Cited by 18 publications

References 35 publications

Mn-Doped M2CdCl4 (M = CH3NH3+, C2H8N+, and C3H10N+) Layered Hybrid Perovskite and Its Flexible Film Based on Simple Mechanochemical Synthesis

Mn-Doped M2CdCl4 (M = CH3NH3+, C2H8N+, and C3H10N+) Layered Hybrid Perovskite and Its Flexible Film Based on Simple Mechanochemical Synthesis

Synthesis, Crystal and Electronic Structures, and Optical Properties of (CH3NH3)2CdX4 (X = Cl, Br, I)

Antioxidant activity, Dielectric and Electrical Properties of N-benzyl-N'-(5-methyl-1H-pyrazol-3-yl) propanimidamide.

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Product

Resources

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Mn-Doped M₂CdCl₄ (M = CH₃NH₃⁺, C₂H₈N⁺, and C₃H₁₀N⁺) Layered Hybrid Perovskite and Its Flexible Film Based on Simple Mechanochemical Synthesis

Mn-Doped M₂CdCl₄ (M = CH₃NH₃⁺, C₂H₈N⁺, and C₃H₁₀N⁺) Layered Hybrid Perovskite and Its Flexible Film Based on Simple Mechanochemical Synthesis

Synthesis, Crystal and Electronic Structures, and Optical Properties of (CH₃NH₃)₂CdX₄ (X = Cl, Br, I)