TY  - EJOU
AU  - Liu, Qizheng 
AU  - Chen, Cong 

TI  - Recent Breakthroughs in Leveraging MoS<sub>2</sub> to Transcend the Performance Bottlenecks of Perovskite Solar Cells
T2  - Chalcogenide Letters

PY  - 2026
VL  - 23
IS  - 7
SN  - 1584-8663

AB  - The power conversion efficiency of perovskite solar cells has increased rapidly; however, interfacial-defect-induced non-radiative recombination, ion migration, and sensitivity to moisture, oxygen, and thermal stress continue to cause open-circuit voltage losses and a limited operational lifetime. Owing to its tunable energy levels, high carrier mobility, and compact hydrophobic layered structure, two-dimensional MoS<sub>2</sub> can serve as an electron or hole transport layer, an interfacial buffer layer, or an additive, enabling favorable energy-level alignment and optimized interfacial charge-transfer kinetics, thereby promoting carrier extraction and suppressing recombination. The sulfur sites of MoS<sub>2</sub> can coordinate with undercoordinated Pb<sup>2</sup><sup>+</sup> to form Pb–S bonds, thereby passivating defects and stabilizing the α-FAPbI<sub>3</sub> phase, while continuous MoS<sub>2</sub> layers can suppress ion migration through physical diffusion blocking; meanwhile, van der Waals epitaxy and heterogeneous nucleation induced by MoS<sub>2</sub> improve film crystallinity and relieve residual stress, synergistically enhancing both efficiency and durability. This review summarizes the functional mechanisms, preparation methods, and integration routes of MoS<sub>2</sub> in PSCs, with particular attention to recent advances in wafer-scale monolayer interfaces, mesoporous electron-transport layers, functionalized nanosheet additives, quantum-dot composite absorbers, and hybrid interfaces. These approaches are compared in terms of their effects on charge transport, defect passivation, crystallization, device efficiency, stability, process compatibility, and scalability. The outlook also considers data-driven optimization, integration with other two-dimensional materials, and applications in flexible, large-area, and tandem devices.
KW  - Perovskite solar cells; MoS<sub>2</sub>; stability; power conversion efficiency; interfacial engineering

DO  - 10.32604/cl.2026.087725