Enhanced moisture stability of perovskite nanostructure using methyl ammonium lead iodide and benzyl ammonium iodide as additive

Priya, Harsha; Albert, Ancy; Indiramma, Jinchu; Sreelatha, K. S.; Sreekala, Chandra Sekharan Nair Omana Amma

doi:10.1063/5.0030144

Cited by 2 publications

(1 citation statement)

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“…In addition to low cost and simple methods of synthesis, lead halide perovskites have significant absorption coefficients, photoluminescence, longer exciton lengths, small exciton binding energy, higher dielectric constants, and ferroelectric property [12,13]. Even though Lead halide perovskite solar cells are having remarkable advancement [14], but it faces many issues including stability and decomposition when exposed to moisture, light, extreme heat, and also in the case of large-scale production. There is another important fact that should be taken into account is that lead is a highly toxic element and therefore affects the environment as well as causes serious harm to human health [12].…”

Section: Introductionmentioning

confidence: 99%

Mixed Organic Halide Perovskite Energy Harvester for Solar Cells

Mydhili

Albert

Sreekala

2023

J. Phys.: Conf. Ser.

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Organic- inorganic hybrid perovskite shows promising properties such as optical, electrical, and magnetic. To address issues in the standard methylammonium lead iodide perovskite such as toxicity and stability, lead was replaced with Cu in metal ion part and iodine replaced by chlorine in the anionic position. In this work, methyl ammonium copper chloride (MA2CuCl4) and phenyl ethyl ammonium copper chloride (PEA2CuCl4) were synthesised. Optical and structural property variations of solution obtained by mixing MA2CuCl4 and PEA2CuCl4 in 1:1 ratio was studied. Methylammonium lead iodide has a wide range of applications, particularly in solar cells and photovoltaic systems. Phenylethyl ammonium copper chloride material exhibits both ferroelectric and ferromagnetic properties. Methylammonium copper chloride is hygroscopic and unstable. To increase the stability of the material the organic part can be replaced with higher-order functional groups. Phenylethyl ammonium copper chloride is found to be thermally stable and has more moisture resistance ability compared to methyl ammonium copper chloride. From angle of efficiency, methyl ammonium copper chloride possessed higher performance than phenylethyl ammonium copper chloride, particularly in the field of solar cell perovskites. Uv-vis spectroscopy, FE-SEM, XRD, FTIR characterizations were done.

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