Comparative Analysis of White-Light Absorption Efficiency in Multi-Dimensional Perovskites

This research aims to comprehensively analyze three distinct perovskite materials, two-dimensional perovskite (2DP) (BA2MA3Pb4I13), traditional three-dimensional perovskite, MAPbI
3
(3DP), and CS
0.05
FA
0.79
MA
0.16
PbI
2.45
Br
0.55
, also known as triple cation, mixed halide perovskite (3DP-TC). The primary emphasis is on examining their interaction with incoming broadband radiation, including towards photovoltaic (PV) technology. Our investigation begins with a thorough examination of the optoelectronic properties of these perovskite materials when used as photo absorbers in an n-i-p architecture for PV devices. To enhance our understanding, we conduct surface analysis on freshly synthesized perovskite films by employing various material characterization techniques for a comparative assessment using techniques such as photoluminescence (PL) spectroscopy and scanning electron microscopy (SEM). We also explore the efficiencies of the three perovskite absorbers when they are integrated into PV architectures. The scope of this paper is an insightful demonstration into the potential of these three classes of perovskites spanning dimensionality from 3D to 2D within the crystalline unit cell, for shedding insights on their optoelectronic behavior, and their performance in PV applications.