Metal-organic Nanosheets as Hole Transport Layer Additives for Enhancing Perovskite Solar Cells

Perovskite solar cells (PSCs) are at the forefront of next-generation photovoltaic
research. However, achieving efficient, low-cost, and dopant-free hole transport layers
(HTLs) remains a central challenge, especially when using poly(3-hexylthiophene)
(P3HT), whose intrinsic charge mobility and energetic alignment constrain device
performance. This thesis presents a systematic exploration of two-dimensional (2D)
metal–organic nanosheets (MONs), ultrathin crystalline materials with high surface
areas and tunable electronic properties as multifunctional additives within P3HT-based
HTLs, establishing a rational design framework that bridges molecular structure with
macroscopic photovoltaic performance.