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Issue 12, 2020
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High-performance inverted perovskite solar cells using 4-diaminomethylbenzoic as a passivant

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Abstract

Grain boundary (GB) and interface passivation of perovskite films impacts the efficiency and stability of perovskite solar cells (PSCs) dramatically. Here, an efficient passivation strategy using 4-diaminomethylbenzoic (4-DA) followed by thermal annealing treatment is proposed to improve the performance of PSCs. We have systemically investigated the impact of 4-DA on the physical properties of the perovskite layer and corresponding performance of the inverted PSCs. The results show that the contact between crystalline grains is improved, and high quality MAPbI3 films are successfully prepared, which result in the elimination of trap states and enhanced performance of the devices. The highest power conversion efficiency (PCE) of 20.58% is achieved in this work. Meanwhile, the devices show enhanced stability and the average PCE values almost remained the same after 168 hours of storage without any encapsulation. The passivation method developed in this work shows a novel strategy toward the fabrication of inverted PSCs with high efficiency and high stability.

Graphical abstract: High-performance inverted perovskite solar cells using 4-diaminomethylbenzoic as a passivant

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Supplementary files

Article information


Submitted
10 Feb 2020
Accepted
19 Feb 2020
First published
20 Feb 2020

Nanoscale, 2020,12, 6767-6775
Article type
Paper

High-performance inverted perovskite solar cells using 4-diaminomethylbenzoic as a passivant

Z. He, J. Xiong, Q. Dai, B. Yang, J. Zhang and S. Xiao, Nanoscale, 2020, 12, 6767
DOI: 10.1039/D0NR01142H

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