Publication: Tungsten-Doped ZnO as an Electron Transport Layer for Perovskite Solar Cells: Enhancing Efficiency and Stability
Date
2024
Authors
Gantumur M.
Hossain M.I.
Shahiduzzaman Md.
Tamang A.
Rafij J.H.
Shahinuzzaman Md.
Thi Cam Tu H.
Nakano M.
Karakawa M.
Ohdaira K.
Journal Title
Journal ISSN
Volume Title
Publisher
American Chemical Society
Abstract
This study delves into enhancing the efficiency and stability of perovskite solar cells (PSCs) by optimizing the surface morphologies and optoelectronic properties of the electron transport layer (ETL) using tungsten (W) doping in zinc oxide (ZnO). Through a unique green synthesis process and spin-coating technique, W-doped ZnO films were prepared, exhibiting improved electrical conductivity and reduced interface defects between the ETL and perovskite layers, thus facilitating efficient electron transfer at the interface. High-quality PSCs with superior ETL demonstrated a substantial 30% increase in power conversion efficiency (PCE) compared to those employing pristine ZnO ETL. These solar cells retained over 70% of their initial PCE after 4000 h of moisture exposure, surpassing reference PSCs by 50% PCE over this period. Advanced numerical multiphysics solvers, employing finite-difference time-domain (FDTD) and finite element method (FEM) techniques, were utilized to elucidate the underlying optoelectrical characteristics of the PSCs, with simulated results corroborating experimental findings. The study concludes with a thorough discussion on charge transport and recombination mechanisms, providing insights into the enhanced performance and stability achieved through W-doped ZnO ETL optimization. ? 2024 American Chemical Society.
Description
Keywords
Conversion efficiency , Finite difference time domain method , Finite element method , II-VI semiconductors , Numerical methods , Perovskite , Perovskite solar cells , Semiconductor doping , Stability , Zinc oxide , erythromycin , perovskite , tungsten , zinc oxide , Device stability , Doped zinc oxides , Electron transport layers , Finite difference time domains , Green synthesis , Multi-physics , Multiphysic finite-difference time-domain and finite element method solver , Optoelectronics property , Power conversion efficiencies , W-doping , article , coating (procedure) , controlled study , electric conductivity , electron transport , finite element analysis , genetic recombination , moisture , simulation , solar cell , spin coating , synthesis , Multiphysics