Optical Analysis in CH₃NH₃PbI₃ and CH₃NH₃PbI₂Cl Based Thin-Film Perovskite Solar Cell

Wayesh Qarony^1, , Yesmin Ara Jui¹, Gloria Mithi Das¹, Tashfiq Mohsin¹, Mohammad Ismail Hossain¹ and Syed Nurul Islam¹

¹Electrical and Electronic Engineering, American International University-Bangladesh, Dhaka

Cite this paper:
Wayesh Qarony, Yesmin Ara Jui, Gloria Mithi Das, Tashfiq Mohsin, Mohammad Ismail Hossain and Syed Nurul Islam. Optical Analysis in CH₃NH₃PbI₃ and CH₃NH₃PbI₂Cl Based Thin-Film Perovskite Solar Cell. American Journal of Energy Research. 2015; 3(2):19-24. doi: 10.12691/ajer-3-2-1

Abstract

The optics of organic-inorganic halide perovskites materials in thin-film smooth surface p-i-n solar cell has been studied. The study was conducted for CH₃NH₃PbI₃ perovskite material, used as a photoactive layer and sandwiched between ultrathin electron transport layer of TiO₂ and hole transport layer of P3HT. The investigation was carried out based on the optical wave propagation simulation results of quantum efficiency and short circuit current. A reference model of solar cell exhibits a maximum of 21.79 mA/cm² short circuit current as well as 76% of external quantum efficiency (EQE) for 620 nm to 700 nm of spectral range of wavelengths. Analyzing the influence of thickness for each layer on the short circuit current and the quantum efficiency the cell was optimized. Finally, a comparative analysis has also been done between CH₃NH₃PbI₃ and CH₃NH₃PbI₂Cl perovskite thin-film solar cell, where CH₃NH₃PbI₂Cl based solar cell gives 2.7% higher short circuit current and around 7.5% higher photon absorption, particularly in the near infrared red regions of spectrum (700 nm- 800 nm) and for the 360 nm of absorbing layer. Throughout the research, a Finite Difference Time Domain (FDTD) based Maxwell’s curl equations solver was used.

Keywords:
perovskite solar cell CH₃NH₃PbI_3-xCl_x quantum efficiency short circuit current FDTD

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