Elaboration, structural, vibrational and optical investigation of a two-dimensional self-assembled organic-inorganic hybrid compound

Thameur Dammak (1) , H. Boughzala (2) , Adnen Mlayah (3) , Younes Abid (1)

1 Université de Sfax - University of Sfax
2 FST - Faculté des Sciences Mathématiques, Physiques et Naturelles de Tunis
3 CEMES-NeO - Nano-Optique et Nanomatériaux pour l'optique

Single crystals of a hybrid organic/inorganic material with the formula (C4N3H16)Cl[CuCl4] were elaborated and studied by X-ray diffraction, and photoluminescence. The crystals consist of a self-assembled multilayer structure with a Pnam space group. The structure is built up from the staking of infinite two-dimensional layers of CuCl6 corner-sharing octahedra, separated by organic (C4N3H16)3+ chains. Such a structure may be regarded as a multi quantum well system, in which CuCl6 layers act as semiconductor wells and the organic molecules act as insulator barriers Furthermore, the room temperature IR and Raman spectra of the title compound were recorded and analyzed. For optical investigations, thin films have been prepared by spin-coating method from the ethanol solution of the material. Optical absorption spectra shows characteristic absorptions of CuCl-based layered perovskite centered at 300 and 380 nm, whereas the photoluminescence spectra shows a bleu intense emission around 420 nm, associated to radiative recombination of confined excitons in the CuCl6 Quantum wells.

Mots clés: Electromagnetic wave absorption; Film preparation; Light absorption; Multilayers; Photoluminescence; Semiconductor quantum wells; Single crystals; X ray diffraction; Hybrid organic/inorganic materials; Multi-quantum-well systems; Organic-inorganic hybrid compounds; Organic-inorganic materials; Photoluminescence spectrum; Self assembled multilayers; Vibrational study; X ray crystal structures; Crystal structure

Domaines: Physique [physics]

Thameur Dammak, H. Boughzala, Adnen Mlayah, Younes Abid. Elaboration, structural, vibrational and optical investigation of a two-dimensional self-assembled organic-inorganic hybrid compound. Journal of Luminescence, 2016, 173, pp.213-217. ⟨10.1016/j.jlumin.2015.10.057⟩. ⟨hal-01764985⟩