Effects of ZnI2 doping on the performance of methylammonium-free perovskite solar cells
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Detail(s)
Original language | English |
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Article number | 043102 |
Journal / Publication | Journal of Applied Physics |
Volume | 128 |
Issue number | 4 |
Online published | 23 Jul 2020 |
Publication status | Published - 28 Jul 2020 |
Externally published | Yes |
Link(s)
Abstract
Methylammonium (MA)-free perovskite solar cells (PVSCs) have obtained great attention recently, owing to their superior stability. However, there are still gaps in efficiency between MA-free PVSCs and MA-containing counterparts. Their stability still needs to be further enhanced for meeting commercial standards, especially the illumination stability. Here, we incorporate Zn2+ into perovskite thin films to passivate defects, successfully achieving a champion efficiency of 20.7% and reinforcing the stability of MA-free FA0.9Cs0.1PbI3 PVSCs. This study reveals that Zn-doping can increase the grain size and contribute to modulate the crystallization process. Moreover, it is found that most of the Zn2+ aggregates at the grain boundaries passivating defects and, thus, effectively restrain the non-radiative recombination in the PVSCs. These findings provide a new way of realizing highly efficient and stable PVSCs.
Research Area(s)
Citation Format(s)
Effects of ZnI2 doping on the performance of methylammonium-free perovskite solar cells. / Yan, Lei; Li, Zhenchao; Niu, Tianqi et al.
In: Journal of Applied Physics, Vol. 128, No. 4, 043102, 28.07.2020.
In: Journal of Applied Physics, Vol. 128, No. 4, 043102, 28.07.2020.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review