Pengaruh  Penambahan Phenethylammonium Iodida (PEAI) terhadap Struktur dan Sifat Optik Lapisan Perovskite Solar Cell FAPbI3

Poni Dwi Manda; Dahyunir Dahlan; Harmadi Harmadi; Akrajas Ali Umar

doi:10.25077/jfu.14.3.298-304.2025

Authors

Poni Dwi Manda Departemen Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Andalas
Dahyunir Dahlan Departemen Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Andalas
Harmadi Harmadi Departemen Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Andalas
Akrajas Ali Umar Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia

DOI:

https://doi.org/10.25077/jfu.14.3.298-304.2025

Keywords:

formamidinium lead iodide, fenetilamonium iodide, UV-Vis Spectrum, Grain Size, DSSC

Abstract

This study explores the effect of doping phenethylanimum iodide (PEAI) on grain size and absorption ability in the perovskite formanidinium lead iodide (FAPbI₃) layer. FAPbI₃was chosen as the object of study because of its potential application in perovskite-based solar cell technology. In this experiment, the FAPbI3 perovskite layer was prepared with a PEAI doping variation using a two-stage spin-coating method. Ultraviolet-visible (UV-Vis) spectrum analysis showed that the perovskite layer has typical optical absorption characteristics at a wavelength of 780 nm, with a measured energy gap value of 1.48 eV at a PEAI concentration of 2 mg/ml. In addition, the surface morphology of FAPbI₃ showed an increase in grain size along with the addition of PEAI doping, where the optimal grain size was recorded at a doping of 2 mg/ml with a size of 0.54 ± 0.03 μm and a smooth and homogeneous morphology. These findings are expected to make a significant contribution to the development of more efficient and stable solar cells

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