Efficient and stable mesoscopic perovskite solar cell in high humidity by localized Dion-Jacobson 2D‐3D heterostructures

Li, Wenhui; Gu, Xiaolei; Shan, Chengwei; Lai, Xue; Sun, Xiao Wei; Kyaw, Aung Ko Ko

doi:10.1016/j.nanoen.2021.106666

Cited by 49 publications

(56 citation statements)

References 46 publications

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“…Besides, the PL peaks at 495 nm for the modified films illustrate the formation of 2D perovskites (n = 1). 46,47 Interestingly, the PL spectrum for the perovskite/R-a-BrMBA film presents another peak at 545 nm as shown in the inset of Fig. 2a, suggesting that the mixed dimensionality of n = 1 and n = 2 phases are formed for the Br-2D perovskite capping layer.…”

Section: Papermentioning

confidence: 96%

Mixed dimensionality of 2D/3D heterojunctions for improving charge transport and long-term stability in high-efficiency 1.63 eV bandgap perovskite solar cells

Jiang,

Tian,

Zhang

et al. 2022

Mater. Adv.

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Section: Papermentioning

confidence: 96%

Mixed dimensionality of 2D/3D heterojunctions for improving charge transport and long-term stability in high-efficiency 1.63 eV bandgap perovskite solar cells

Jiang,

Tian,

Zhang

et al. 2022

Mater. Adv.

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“…Compared with RP phase perovskites, the DJ perovskite based on diammonium cations can connect inorganic layers via hydrogen bonds, further narrowing the interlayer distance by eliminating the van der Waals gap, enabling a more chemical stable structure and an enhanced charge transport . The latest reports on diammonium-based 2D/3D perovskites have been demonstrated to be more promising for fabricating high efficiency and stable devices. − …”

Section: Introductionmentioning

confidence: 99%

Interfacial Modification via a 1,4-Butanediamine-Based 2D Capping Layer for Perovskite Solar Cells with Enhanced Stability and Efficiency

Wang

Zhao

et al. 2021

ACS Appl. Mater. Interfaces

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Organic–inorganic perovskites face the issues of being vulnerable to oxygen and moisture and the trap sites located at the surface and grain boundaries. Integration of two-dimensional (2D) perovskites as a capping layer is an effective route to enhance both photovoltaic efficiency and environmental stability of the three-dimensional (3D) underlayer. Here, we employ 1,4-butanediammonium diiodide (BDADI), which has a short chain length and diammonium cations, to construct a 3D/2D stacking perovskite solar cells (PSCs). The introduction of BDA2+ could passivate surface defects in 3D perovskites by forming 2D Dion–Jacobson (DJ) phase perovskites and effectively suppressing nonradiative recombination, thus resulting in a longer carrier lifetime. The DJ 2D capping layer also regulate the energy level arrangement, enabling a better charge extraction and transport process. In addition, the water-resistance ability of 3D perovskite gets improved because of the hydrophobic characteristic of 1,4-butanediammonium cations. Consequently, the 3D/2D stacking PSCs yield an energy conversion efficiency of 20.32% in company with the enhanced long-term stability.

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“…Recent interest has focused on the stability of PSC. The stability of perovskite is much more improved in past years, but its intrinsically low stabilities against moisture, oxygen, and light are still the main concerns. − Most degradation is accelerated by vulnerable defects that can trap the charges and provide the degradation pathway. The passivation of such defects can lead to a large improvement in stability as well as efficiency.…”

Section: Resultsmentioning

confidence: 99%

Defect Passivation through (α-Methylguanido)acetic Acid in Perovskite Solar Cell for High Operational Stability

Kim

Min

Park

et al. 2022

ACS Appl. Mater. Interfaces

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Defect passivation has become essential in improving efficiency and stability in perovskite solar cells. Here, we report the use of (α-methylguanido)acetic acid, also known as creatine, as a passivation molecule. It is employed both as an additive and as a surface passivation layer of perovskite thin films, given its multiple functional groups, which could address different defect sites, and its size, which could inherently affect the material structure. We prove that the surface passivation is more efficiently working by removing vulnerable defects on the surface. Hole and electron defect densities were reduced, leading to the highest power conversion efficiency of 22.6%. In addition, it can effectively protect the perovskite thin film and improve the operational stabilities in high thermal (85 °C) and humid conditions (50% relative humidity), suggesting a strong stability of the surface passivation layer.

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Efficient and stable mesoscopic perovskite solar cell in high humidity by localized Dion-Jacobson 2D‐3D heterostructures

Cited by 49 publications

References 46 publications

Mixed dimensionality of 2D/3D heterojunctions for improving charge transport and long-term stability in high-efficiency 1.63 eV bandgap perovskite solar cells

Mixed dimensionality of 2D/3D heterojunctions for improving charge transport and long-term stability in high-efficiency 1.63 eV bandgap perovskite solar cells

Interfacial Modification via a 1,4-Butanediamine-Based 2D Capping Layer for Perovskite Solar Cells with Enhanced Stability and Efficiency

Defect Passivation through (α-Methylguanido)acetic Acid in Perovskite Solar Cell for High Operational Stability

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