期刊
ACS APPLIED MATERIALS & INTERFACES
卷 13, 期 7, 页码 8595-8605出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c22817
关键词
MAPbI(3) perovskites; carnitine doping; defects passivation; adjustable band gap; stability
资金
- Ministry of Science and Technology of Taiwan
- MOST [1082113-M-035-003, MOST 109-2113-M-035-001]
Natural vitamin B was added into the precursor solution to passivate ionic defects in perovskite films, leading to improved charge transport efficiency in PSCs and significantly increased power conversion efficiency.
Efficient control of the perovskite crystallization and passivation of the defects at the surface and grain boundaries of perovskite films have turned into the most important strategies to restrain charge recombination toward high-performance and long-term stability of perovskite solar cells (PSCs). In this paper, we employed a small amount of natural vitamin B (carnitine) with dual functional groups in the MAPbI(3) precursor solution to simultaneously passivate the positive- and negative-charged ionic defects, which would be beneficial for charge transport in the PSCs. In addition, such methodology can efficiently ameliorate crystallinity with texture, better film morphology, high surface coverage, and longer charge carrier lifetime, as well as induce preferable energy level alignment. Benefiting from these advantages, the power conversion efficiency of PSCs significantly increases from 16.43 to 20.12% along with not only a higher open-circuit voltage of 1.12 V but also an outstanding fill factor of 82.78%.
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