期刊
NANO ENERGY
卷 48, 期 -, 页码 20-26出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nanoen.2018.02.049
关键词
Organometal halide perovskite; Solar cell; Ferroelectricity; Simulation; Piezoresponse force microscopy
类别
资金
- PRIN Project PERSEO [20155LECAJ]
- COST Action MP1406 MultiscaleSolar
- Landesgraduiertenforderung
- Baden-Wurttemberg Foundation (project Nano-Solar) [CT-9]
- German Federal Ministry of Education and Research [03EK3504]
- Helmholtz Association through the Program Science and Technology of Nanosystems (STN)
This work analyzes in detail the effect of ferroelectric polarization patterns in methylammonium lead iodide (MAPbI(3)) thin-films on the J-V characteristics of the corresponding solar cells. The simulations are based on a finite-element discretization of the drift-diffusion equations and take into account the polarization pattern experimentally derived from piezoresponse force micrographs. Based on the knowledge of the crystalline structure, symmetry considerations and electrical simulations, we discuss models for the polarization orientation pattern and magnitude of the ferroelectric domains. We conclude that the in-plane polarization vectors have 45 degrees orientation towards the domain walls and form herring-bone structures. The presence of ordered ferroelectric domains, even with a weak characteristic polarization magnitude enhances the power conversion efficiencies and are mandatory to reproduce the experimental J-V characteristics.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据