title: Influence of Cs(I)-doping on the spectral, thermal, morphological and optical properties of bis(thiourea)zinc(II) chloride crystals.
abstract: Single crystals of alkali metal caesium(I) doped bis(thiourea)zinc(II) chloride are grown at room temperature by slow evaporation solution growth technique. Powder XRD studies reveal some interesting features in the XRD profiles with changes in intensity patterns in doped specimen due to stress development in the crystal. The incorporation of Cs(I) into the crystal lattice was confirmed by energy dispersive X-ray spectroscopy. Slight shifts in vibrational patterns of doped specimen indicate that the crystal undergoes considerable lattice stress as result of doping. SEM studies of pure and doped samples reveal the external morphology. Thermogravimetric and differential thermal studies reveal the purity of the material and the specimens are stable up to the melting point. The optical studies reveal that absorption is minimum in the visible region and doping influenced the diffuse reflectance spectrum. The band gap energies of the pure and doped specimens were estimated by the application of Kubelka-Munk algorithm.
authors.affiliation: Department of Chemistry, Annamalai University, Annamalainagar 608 002, India.
authors.forename: K
authors.initials: K
authors.lastname: Meena
authors.affiliation: Department of Chemistry, Annamalai University, Annamalainagar 608 002, India.
authors.forename: K
authors.initials: K
authors.lastname: Muthu
authors.affiliation: Department of Chemistry, Annamalai University, Annamalainagar 608 002, India.
authors.forename: V
authors.initials: V
authors.lastname: Meenatchi
authors.affiliation: Department of Chemistry, Annamalai University, Annamalainagar 608 002, India.
authors.forename: M
authors.initials: M
authors.lastname: Rajasekar
authors.affiliation: Department of Chemistry, Annamalai University, Annamalainagar 608 002, India.
authors.forename: A
authors.initials: A
authors.lastname: Aditya Prasad
authors.affiliation: Department of Chemistry, Annamalai University, Annamalainagar 608 002, India. Electronic address: aumats2009@gmail.com.
authors.forename: Sp
authors.initials: S
authors.lastname: Meenakshisundaram
mesh_terms: D002586:Cesium / Q000737:chemistry*; D003460:Crystallization; D004055:Differential Thermal Analysis; D008855:Microscopy, Electron, Scanning; D055620:Optical Phenomena; D009942:Organometallic Compounds / Q000737:chemistry*; D013052:Spectrometry, X-Ray Emission; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature; D013818:Thermogravimetry; D014732:Vibration; D014961:X-Ray Diffraction
chemical_list: D009942:Organometallic Compounds; C568105:bis(thiourea)zinc(II) chloride; D002586:Cesium
keywords: Band gap energy; Cs(I)-doping; FT-IR spectroscopy; TG/DTA; UV–vis spectroscopy