Synthesis and characterization of a new perovskite of LaCrO3

سال انتشار: 1398
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 284

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شناسه ملی سند علمی:

IICC21_216

تاریخ نمایه سازی: 5 آذر 1398

چکیده مقاله:

The name of perovskite was derived from Lev A. Perovski who was a Russian mineralogist [1]. Perovskite structured materials could bethe potential material inthe emerging photovoltaic field due to itsrapid PCE improvement. The common chemical formula for perovskite compounds is ABX3, where A and B are two cations.Moreover, ABX3needs to be a six coordination number element toform octahedron as BX6. The ratio of ionic radius between A and B isthe major factor in forming perovskite structure. The octahedronsconnect with each other by element X. Every eight octahedronsform a space where a cation is located. The ratio of ionic radiusbetween A and B is calculated by tolerance factor ]2[. Tolerance factor between 0.9 and 1.0 leads to form cubic perovskite structure. Tolerance factor between 0.7 and 0.9 leads to form orthorhombic, rhombohedral or tetragonal perovskite structure ]3]. In this study, a new perovskite based on chrome(III) metal and lanthanum(III) in a co-precipitation wassynthesized andcharacterized by Infrared (IR) spectroscopy (figure 1) and X-Ray Powder Diffraction (XRD) (figure 2) analysis.5 mL aqueous solution of La(NO3)3 (0.65 g, 1.5 mmol) was prepared. This solution was slowly added to the aqueous solution (3.5 mL) of Cr(NO3)3 (0.4 g, 1mmol) under co-precipitation.

نویسندگان

Azam Rashidi Toghroljerdi

Department of Chemistry, Faculty of Sciences, ShahidBahonar University of Kerman, Kerman, Iran

Mozhde Salarinasab,

Department of Chemistry, Faculty of Sciences, ShahidBahonar University of Kerman, Kerman, Iran

Zohreh Rashidi Ranjbar

Department of Chemistry, Faculty of Sciences, ShahidBahonar University of Kerman, Kerman, Iran