Metastable Dion-Jacobson 2D structure enables efficient and stable perovskite solar cells

Wang, Shirong; Park, So Yeon; Yao, Canglang; Lu, Haipeng; Dunfield, Sean P.; Xiao, Chuanxiao; Uličná, Soňa; Zhao, Xiaoming; Hill, Linze Du; Chen, Xihan; Wang, Xiaoming; Mundt, Laura E.; Stone, Kevin H.; Schelhas, Laura T.; Teeter, Glenn; Parkin, Sean; Ratcliff, Erin L.; Loo, Yueh‐Lin; Berry, Joseph J.; Beard, Matthew C.; Yan, Yanfa; Larson, Bryon W.; Zhu, Kai

doi:10.1126/science.abj2637

Cited by 310 publications

(235 citation statements)

References 45 publications

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“…Unencapsulated cells MPP at 65 °C in N 2 for 400 h, drop by ≈12% 2020 [30] Cs 0.1 FA 0.9 PbI 3 20.23 Strain engineering _ _ Unencapsulated cells stored at 70% RH for 500 h, drop by <30% _ 2020 [31] Cs 0.17 FA 0.83 PbI 3 23.35 Crystal growth Unencapsulated cells aged at 85 °C and 15 ± 5% RH in the air for 500 h, drop by ≈20% _ _ _ 2021 [32] Cs x FA 1-x PbI 3 21.98 Crystal growth _ _ _ _ 2021 [33] Cs 2019 [42] FA 0.57 MA 0.43 PbI 2.87 Br 0.13 21.21 (Certified) Crystal growth _ _ _ _ 2019 [43] (FAPbI 3 ) x (MAPbBr 2019 [44] (FAPbI 3 ) 0.85 (MAPbBr 3 ) 0.15 20.7 (Certified) Strain engineering _ _ _ _ 2019 [45] (FAPbI 3 ) 0.95 (MAPbBr 2019 [46] (FAPbI 3 ) 0.97 (MAPbBr 2021 [47] (FAPbI 3 ) 0.97 (MAPbBr 2021 [48] (FAPbI 3 ) 0.94 (MAPbBr 2021 [49] (FAPbI 3 ) 0.95 (MAPbBr 2021 [50] (FAPbI 3 ) 0.9 (MAPbBr 3 ) 0.1 25.2 (Certified) Interface engineering _ _ Encapsulated cells stored at 30% RH for 3600 h, no drop _ 2021 [51] Cs 0.05 FA 0.81 MA 0. 2019 [52] 2019 [53] (Cs,FA,MA)Pb(I,Br) 3 20.87 (Certified) Additive Stored in N 2 for 1500 h, drop by ≈10% _ 2019 [54] Cs 0.07 FA 0.9 MA 0.03 Pb(I 0.92 Br 0.08 ) 2019 [55] Cs 0.05 (FA 0.92 MA 0.08 ) 0.95 Pb(I 0.92 Br 0.08 ) 3 22.3 (Certified) Crystal growth _ _ _ MPP with 420-nm UV filter in N 2 for 1000 h, no drop 2020 [56] Cs _ 2020 [57] (Cs,FA,MA)Pb(I,Br) 3 23.3 (Certified) Crystal growth _ _ _ _ 2020 [58] (Cs,FA,MA)Pb(I,Br) _ 2021 [62] Cs 2021 [63] Cs _ 2021 [66] Table 1.…”

Section: Unencapsulated Cells Aged At 85 °C In Darkmentioning

confidence: 99%

Efficient and Stable FA‐Rich Perovskite Photovoltaics: From Material Properties to Device Optimization

Liu

et al. 2022

Advanced Energy Materials

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The perovskite photovoltaic field has developed rapidly within a decade. In particular, formamidinium (FA)‐rich perovskite allows a broad absorption spectrum, and is considered to be one of the most promising perovskite materials. Great progress has been achieved, and most recorded high‐efficient perovskite solar cells (PSCs) used the FA‐rich perovskite light absorption layer. However, the black α‐phase formamidinium lead iodide (FAPbI3) perovskite easily transforms into an undesirable δ‐phase at a low temperature. Thus, researchers have put a lot of effort into deeply understanding the phase transformation and stabilization mechanism of FA‐rich perovskite. Herein, the fundamental physical properties of FAPbI3 materials, including crystal structure, phase‐transition temperature, charge‐carrier dynamics, etc. are summarized, and establish a complete phase evolution with temperature by reviewing previous reports. The intrinsic and external factors are subsequently discussed for influencing the stability of FAPbI3 perovskite and the remarkable breakthroughs of FA‐rich PSCs in recent years are reviewed. Moreover, a series of strategies to stabilize FA‐rich perovskite is summarized, including but not limited to compositional engineering, passivating engineering, processing engineering, and strain engineering. Finally, several new viewpoints are provided for improving the efficiency and stability of PSCs. This review may be regarded as a reference project for preparing high‐efficient and stable perovskite photovoltaic devices.

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Section: Unencapsulated Cells Aged At 85 °C In Darkmentioning

confidence: 99%

Efficient and Stable FA‐Rich Perovskite Photovoltaics: From Material Properties to Device Optimization

Liu

et al. 2022

Advanced Energy Materials

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“…Also, 90% of the initial PCE was retained after 1000 h of 1‐sun operation at 40 °C in nitrogen. [ 106 ]…”

Section: Diammonium Cations For 2d Halide Organic–inorganic Perovskit...mentioning

confidence: 99%

Recent Progress in Perovskite Materials Using Diammonium Organic Cations Toward Stable and Efficient Solar Cell Devices: Dion–Jacobson

et al. 2022

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Perovskite solar cells have been intensively studied recently due to their superb optoelectronic properties and rapidly increasing power conversion efficiency. However, perovskite solar cells with the AMX3 structure as the light‐absorbing layer have a big stability problem. Multiple alternatives have been developed to ensure their stability, such as dimensional engineering (2D and 2D/3D), which consists of the incorporation of large organic cations into the perovskite structure. Research in dimensional engineering has been prevalent in the Ruddlesden–Popper phases. The presence of this large cation slows the decomposition and improves the stability of perovskites. Thus, new 2D perovskites are being studied based on Dion–Jacobson (DJ) phases, consisting of the addition of diammonium cations and leading to the formation of 2D and 2D/3D perovskites with better stability due to their hydrogen bonding on both sides. Moreover, 2D DJ perovskites offer the advantage of decreasing the gap between layers with higher contacts, which improves not only their optoelectronic properties, but also their charge transport properties. This article begins with an overview of the crystal structure and optoelectronic characteristics of 2D perovskites. Then, the progress achieved currently in using DJ‐phase perovskites in photovoltaic is assessed. Finally, the possible research routes for producing low‐dimensional perovskites are highlighted.

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“…Recently, Zhu et al have reported that the corporation of metastable DJ‐phase perovskite layer can achieve the stable PCE of 24.7% for 3D lead perovskites solar cells, due to the efficient hole transport in the DJ‐phase lead perovskites. [ 98 ] Mohite et al also reported the higher PCE of DJ‐phase perovskites than their RP‐phase analogous. [ 99 ] Despite the emerging research progress, the tin/germanium DJ‐phase perovskites have to face the another serious issue.…”

Section: Challenges and Perspectivementioning

confidence: 99%

Toward Eco‐Friendly Lead‐Free Low‐Dimensional Perovskites

Gao

Luo

et al. 2022

Small Structures

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Lead halide perovskites are regarded as potential successor of traditional perovskites, due to their variable structures and excellent optoelectronic properties. However, its large‐scale commercialization is impeded by the inherent instability and toxicity. In this regard, lead‐free low‐dimensional perovskites (LFLDPs) have emerged as promising alternatives to the traditional 3D components, due to their structural tunability and environmental friendliness and stability. The structure–property characteristics of LFLDPs endow them with a unique combination of optoelectronic efficiency and versatile functionality, which has led to their impressive employment in the optoelectronic devices. In this perspective, a brief description of recent progress on the various LFLDPs, and especially from theoretical perspective, is presented. First, the general types of LFLDPs are introduced and the metal elements that have been used to date in the exploitation of LFLDPs are collected. This is followed by a discussion of fundamental understanding of the structure–property relationship for different dimensional perovskites in the view of connectivity and element composition. Finally, luminescence mechanism of relevant LFLDPs and the key frontiers and challenges for further developing LFLDP materials is discussed.

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Metastable Dion-Jacobson 2D structure enables efficient and stable perovskite solar cells

Cited by 310 publications

References 45 publications

Efficient and Stable FA‐Rich Perovskite Photovoltaics: From Material Properties to Device Optimization

Efficient and Stable FA‐Rich Perovskite Photovoltaics: From Material Properties to Device Optimization

Recent Progress in Perovskite Materials Using Diammonium Organic Cations Toward Stable and Efficient Solar Cell Devices: Dion–Jacobson

Toward Eco‐Friendly Lead‐Free Low‐Dimensional Perovskites

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