An Embedding 2D/3D Heterostructure Enables High‐Performance FA‐Alloyed Flexible Perovskite Solar Cells with Efficiency over 20%
Abstract Flexible perovskite solar cells (f‐PSCs) have attracted increasing attention because of their enormous potential for use in consumer electronic devices. The key to achieve high device performance is to deposit pinhole‐free, uniform and defect‐less perovskite films on the rough surface of po...
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Wiley
2021
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oai:doaj.org-article:5e829ac7410444dfae6a78160daae1a22021-11-17T08:40:31ZAn Embedding 2D/3D Heterostructure Enables High‐Performance FA‐Alloyed Flexible Perovskite Solar Cells with Efficiency over 20%2198-384410.1002/advs.202101856https://doaj.org/article/5e829ac7410444dfae6a78160daae1a22021-11-01T00:00:00Zhttps://doi.org/10.1002/advs.202101856https://doaj.org/toc/2198-3844Abstract Flexible perovskite solar cells (f‐PSCs) have attracted increasing attention because of their enormous potential for use in consumer electronic devices. The key to achieve high device performance is to deposit pinhole‐free, uniform and defect‐less perovskite films on the rough surface of polymeric substrates. Here, a solvent engineering to tailor the crystal morphology of FA‐alloyed perovskite films prepared by one‐step blade coating is first deployed. It is found that the use of binary solvents DMF:NMP, rather than the conventional DMF:DMSO, enables to deposit dense and uniform FA‐alloyed perovskite films on both the rigid and flexible substrates. As a decisive step, an embedding 2D/3D perovskite heterostructure is in situ formed by incorporating a small amount of 4‐guanidinobutanoic acid (GBA). Accordingly, photovoltage increases up to 100 mV are realized due to the markedly suppressed nonradiative recombination, leading to high efficiencies of 21.45% and 20.16% on the rigid and flexible substrates, respectively. In parallel, improved mechanical robustness of the flexible devices is achieved due to the presence of the embedded 2D phases. The results underpin the importance of morphology control and defect passivation in delivering high‐performance flexible FA‐alloyed flexible perovskite devices.Zhen WangYuanlin LuZhenhua XuJinlong HuYijun ChenCuiling ZhangYousheng WangFei GuoYaohua MaiWileyarticle2D/3D heterostructuresflexible perovskite solar cellsmechanical stabilitynonradiative recombinationScienceQENAdvanced Science, Vol 8, Iss 22, Pp n/a-n/a (2021) |
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DOAJ |
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DOAJ |
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EN |
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2D/3D heterostructures flexible perovskite solar cells mechanical stability nonradiative recombination Science Q |
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2D/3D heterostructures flexible perovskite solar cells mechanical stability nonradiative recombination Science Q Zhen Wang Yuanlin Lu Zhenhua Xu Jinlong Hu Yijun Chen Cuiling Zhang Yousheng Wang Fei Guo Yaohua Mai An Embedding 2D/3D Heterostructure Enables High‐Performance FA‐Alloyed Flexible Perovskite Solar Cells with Efficiency over 20% |
| description |
Abstract Flexible perovskite solar cells (f‐PSCs) have attracted increasing attention because of their enormous potential for use in consumer electronic devices. The key to achieve high device performance is to deposit pinhole‐free, uniform and defect‐less perovskite films on the rough surface of polymeric substrates. Here, a solvent engineering to tailor the crystal morphology of FA‐alloyed perovskite films prepared by one‐step blade coating is first deployed. It is found that the use of binary solvents DMF:NMP, rather than the conventional DMF:DMSO, enables to deposit dense and uniform FA‐alloyed perovskite films on both the rigid and flexible substrates. As a decisive step, an embedding 2D/3D perovskite heterostructure is in situ formed by incorporating a small amount of 4‐guanidinobutanoic acid (GBA). Accordingly, photovoltage increases up to 100 mV are realized due to the markedly suppressed nonradiative recombination, leading to high efficiencies of 21.45% and 20.16% on the rigid and flexible substrates, respectively. In parallel, improved mechanical robustness of the flexible devices is achieved due to the presence of the embedded 2D phases. The results underpin the importance of morphology control and defect passivation in delivering high‐performance flexible FA‐alloyed flexible perovskite devices. |
| format |
article |
| author |
Zhen Wang Yuanlin Lu Zhenhua Xu Jinlong Hu Yijun Chen Cuiling Zhang Yousheng Wang Fei Guo Yaohua Mai |
| author_facet |
Zhen Wang Yuanlin Lu Zhenhua Xu Jinlong Hu Yijun Chen Cuiling Zhang Yousheng Wang Fei Guo Yaohua Mai |
| author_sort |
Zhen Wang |
| title |
An Embedding 2D/3D Heterostructure Enables High‐Performance FA‐Alloyed Flexible Perovskite Solar Cells with Efficiency over 20% |
| title_short |
An Embedding 2D/3D Heterostructure Enables High‐Performance FA‐Alloyed Flexible Perovskite Solar Cells with Efficiency over 20% |
| title_full |
An Embedding 2D/3D Heterostructure Enables High‐Performance FA‐Alloyed Flexible Perovskite Solar Cells with Efficiency over 20% |
| title_fullStr |
An Embedding 2D/3D Heterostructure Enables High‐Performance FA‐Alloyed Flexible Perovskite Solar Cells with Efficiency over 20% |
| title_full_unstemmed |
An Embedding 2D/3D Heterostructure Enables High‐Performance FA‐Alloyed Flexible Perovskite Solar Cells with Efficiency over 20% |
| title_sort |
embedding 2d/3d heterostructure enables high‐performance fa‐alloyed flexible perovskite solar cells with efficiency over 20% |
| publisher |
Wiley |
| publishDate |
2021 |
| url |
https://doaj.org/article/5e829ac7410444dfae6a78160daae1a2 |
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