Optimizing methylammonium lead iodide perovskite synthesis for solar cells via two-step spin coating with mixed solvents

Idris, Muhammad Idzdihar and Abdul Aziz, Ahmad Muhajer and Muniandy, Subathra and Imam Rifai, Malinda Noviasari and Mohammed Napiah, Zul Atfyi Fauzan and Shafie, Suhaidi and Rashid, Marzaini (2024) Optimizing methylammonium lead iodide perovskite synthesis for solar cells via two-step spin coating with mixed solvents. International Journal of Nanoelectronics and Materials, 17 (3). pp. 333-341. ISSN 1985-5761

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Abstract

Methylammonium Lead Iodide (MAPbI3) has often been known to have a perovskite content and is widely employed in Perovskite Solar Cells (PSCs). However, PSCs suffer from rapid degradation due to their low stability and sensitivity to light, heat, humidity, and air. Hence, this project proposes a two-step spin coat method to synthesize MAPbI3 perovskites in an ambient condition using two different types of solvent (DMF only and a mixture of DMF and DMSO) which were prepared to examine the quality of the perovskite layer. The thin films were characterized to study the structural, optical properties, and surface morphology using XRD, UV-Vis spectroscopy, and SEM. The XRD results show that the perovskite layer prepared using a mixture of DMF and DMSO has a bettercrystallinity than DMF, even after the sample was kept for two days as the principal peaks confirm the complete formation of MAPbI3 perovskite film. UV-Vis showed that the perovskite layer prepared with the mixture of DMF and DMSO as the solvent has a higher absorbance than the perovskite layer prepared with DMF. The surface morphology of the MAPbI3 films consists of the formation of cubical crystals of uniform size with high compactness, as confirmed by the SEM analysis. However, after two days, both samples showed a degradation providing feedback on the occurred transition to PbI2 due to the contact with moisture and thermal stability. Moreover, the better stability of perovskite films was observed by a two-step than one-step process was demonstrated withcomparatively good reproducibility.

Item Type:	Article
Uncontrolled Keywords:	Perovskite solar cell, DMF, DMSO, Two-step spin coat, MAPbI3, Crystallinity, Ambient synthesis
Divisions:	Faculty Of Electronics And Computer Technology And Engineering
Depositing User:	Norfaradilla Idayu Ab. Ghafar
Date Deposited:	11 Aug 2025 04:44
Last Modified:	11 Aug 2025 04:44
URI:	http://eprints.utem.edu.my/id/eprint/28878
Statistic Details:	View Download Statistic

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