Facile Method for Synthesis of CsPbBr3 Perovskite at Room Temperature for Solar Cell Applications

Abstract

Inorganic metal halide perovskites CsPbX3 (X = Cl, Br, and I) has achieved extensive attention in recent years for photovoltaics because of their unique properties like tunable band gap, high charge carrier mobility, high absorption coefficient, etc. and which makes it suitable for optoelectronic applications. In this work, we have reported a facile synthesis method of inorganic CsPbBr3 nanoparticles (NPs) at room temperature using cesium bromide (CsBr) as a Cs source, lead bromide (PbBr2) as Br source, oleic acid, and Oleylamine as capping ligands. Nucleation starts immediately after the injection of a precursor solution into the toluene. Synthesis of CsPbBr3 NPs was confirmed by X-Ray diffraction pattern, UV-Visible spectroscopy, photoluminescence (PL), scanning electron microscopy (SEM), and atomic force microscopy (AFM). X-ray diffraction pattern reveals mainly the monoclinic crystal structure of CsPbBr3 NPs. The UV-Vis absorption spectra and PL spectra show a strong absorption peak at 509 nm, emission peak at 505 nm, and the band gap of CsPbBr3 to be 2.2 eV. The synthesized CsPbBr3 exhibit regular cuboid like structure with a particle size of approximately 400-500 nm. The surface roughness morphology of CsPbBr3 NPs was studied using AFM, and it shows the roughness of the CsPbBr3 films was around 260 nm. These results provide a facile synthesis method, and CsPbBr3 NPs are a suitable candidate for the optoelectronic and photovoltaic device's application.

Advances in organic photovoltaic cells: a comprehensive review of materials, technologies, and performance

“…The perovskite material was found to have high light absorption, high charge-carrier mobility, and a suitable band gap for solar energy conversion. 24,25 Since then, perovskite solar cells have attracted a lot of attention from the scientic community due to their high efficiency potential and low cost. The efficiency of perovskite solar cells has increased signicantly over the years, with the current record efficiency at over 25%.…”

Light Amplification in Fe-Doped CsPbBr3 Crystal Microwire Excited by Continuous-Wave Laser

“…These sharp peaks indicate that the microwires are crystalline and consistent with the monoclinic structure in the previous reports. 29,30 The dopant Fe concentration could be tiny in the microwire, which has been quantitatively analyzed by electron probe microanalysis (EPMA) (Table S1, Supporting Information). Since no microwires have been obtained in the stainless steel autoclave at room temperature, we considered that the temperature-induced higher pressure facilitates the growth of perovskite microwires.…”

Enhancing the perovskite solar cell performance by the interface modification of Zn–Sn–O compound heterostructures

“…Also, the electrode materials have not deteriorated strongly with time, as the V oc appeared to show low degradation. 74 Degradation of the active layer and the device constituents was the primary cause of performance degradation. A reduction in J sc and FF can be attributed to the photodegradation of perovskites.…”