SYNTHESIS AND CHARACTERIZATION OF MEHTYLAMMONIUM BISMUTH IODIDE VIA SOLVENT ENGINEERING

Bello Abdulkareem

doi:10.4314/njt.v42i2.10

Authors

Bello Abdulkareem Ahmadu Bello University

DOI:

https://doi.org/10.4314/njt.v42i2.10

Keywords:

Bismuth, Perovskite, Band gap, Photovoltaic, Optoelectronics

Abstract

Hybrid organic–inorganic halide perovskites (OIHPs) are an emerging class of photovoltaic materials that have gained tremendous attention in the field of optoelectronics. This work aims to investigate the characteristics of bismuth-based halide perovskite via solvent engineering for solar cell application. A bismuth-based organo-inorganic perovskite was synthesized and characterized for solar cell application via solvent engineering using Gamma Butyrolactone (GBL) as the based solvent and enhanced with Methylamine (MA) and acetonitrile (ACN). A solution processing facile method was adopted in the synthesis of the perovskite. The solvent engineering aims to tune its band gap and a remarkable band gap of 1.58eV which is within the range of an ideal band gap (1.5-1.6) required for solar cell application. The XRD micrograph exhibited several narrow sharp peaks which indicated crystallinity formation of the synthesized sample with 86% crystallinity. The FESEM/EDS micrograph indicated nature of the formed crystals and the chemical composition of the sample. A multilayer heptagonal crystal was observed. The TGA result showed that the sample is thermally stable at a temperature of 200^oC before degradation occurred.

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