Intact 2D/3D halide junction perovskite solar cells via solid-phase in-plane growth

Jang, Yeoun‐Woo; Lee, Seungmin; Yeom, Kyung Mun; Jeong, Kiwan; Choi, Kwang Wook; Choi, Mansoo; Noh, Jun Hong

doi:10.1038/s41560-020-00749-7

Cited by 422 publications

(400 citation statements)

References 42 publications

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“…A high built-in potential is observed at the 2D/3D heterojunction which results in high photovoltage. A steady-state efficiency of 24.35% is achieved and the encapsulated device could retain 94% of the initial PCE after 1,056 h under the damp heat test (85°C/85% relative humidity) and 98% after 1,620 h under full-sun illumination (Jang et al, 2021a).…”

Section: Composition Engineeringmentioning

confidence: 98%

Stability of Perovskite Solar Cells: Degradation Mechanisms and Remedies

2021

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Inorganic–organic metal halide perovskite light harvester-based perovskite solar cells (PSCs) have come to the limelight of solar cell research due to their rapid growth in efficiency. At present, stability and reliability are challenging aspects concerning the Si-based or thin film-based commercial devices. Commercialization of perovskite solar cells remains elusive due to the lack of stability of these devices under real operational conditions, especially for longer duration use. A large number of researchers have been engaged in an ardent effort to improve the stability of perovskite solar cells. Understanding the degradation mechanisms has been the primary importance before exploring the remedies for degradation. In this review, a methodical understanding of various degradation mechanisms of perovskites and perovskite solar cells is presented followed by a discussion on different steps taken to overcome the stability issues. Recent insights on degradation mechanisms are discussed. Various approaches of stability enhancement are reviewed with an emphasis on reports that complied with the operational standard for practical application in a commercial solar module. The operational stability standard enacted by the International Electrotechnical Commission is especially discussed with reports that met the requirements or showed excellent results, which is the most important criterion to evaluate a device’s actual prospect to be utilized for practical applications in commercial solar modules. An overall understanding of degradation pathways in perovskites and perovskite solar cells and steps taken to overcome those with references including state-of-the-art devices with promising operational stability can be gained from this review.

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Section: Composition Engineeringmentioning

confidence: 98%

Stability of Perovskite Solar Cells: Degradation Mechanisms and Remedies

2021

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“…1256 For example, an Z value of 15.81% has been achieved using hot-cast Dion-Jacobson 2D perovskite ((PDMA)(MA) nÀ1 Pb n I 3n+1 (PDMA = 1,4-phenylenedimethanammonium; hni = 4)) as the photoactive layer. 1255…”

Section: Two-dimensional/three-dimensional Pscsmentioning

confidence: 99%

“…For example, an Z value of 15.81% has been achieved using hot-cast Dion-Jacobson 2D perovskite ((PDMA)(MA) nÀ1 Pb n I 3n+1 (PDMA = 1,4-phenylenedimethanammonium; hni = 4)) as the photoactive layer 1255. Moreover, by elucidating the critical role of additives in regulating the nucleation and crystallization kinetics of 2D (PEA) 2 (MA) 3 Pb4I 13 films with low trap states and desired carrier transport/collection properties, Yang et al recently achieved an Z value up to 18.5%, together with FF of 83.4% 1257.…”

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confidence: 99%

Solution-processed two-dimensional materials for next-generation photovoltaics

et al. 2021

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“…Organic‐inorganic hybrid perovskites, exhibiting large absorption coefficient, high carrier mobility, long carrier diffusion length, low exciton binding energy, and controllable optical band gap, [ 1–4 ] have been widely researched in terms of both scientific theory and photovoltaic applications, which has motivated the rapid development of the power conversion efficiency of perovskite solar cells (PSCs) in recent years. [ 5–15 ] However, they still suffer severely from the lack of long‐term durability. [ 11,16–18 ] Due to the different ion deposition speeds, defects are induced inevitably during the preparation process of perovskite films.…”

Section: Introductionmentioning

confidence: 99%

“…[ 5–15 ] However, they still suffer severely from the lack of long‐term durability. [ 11,16–18 ] Due to the different ion deposition speeds, defects are induced inevitably during the preparation process of perovskite films. Defects like Pb 2+ vacancy ( V Pb ), I − vacancy ( V I ) and Pb‐I antisite substitution (Pb I and I Pb ) forming in the bulk and on the surface are the predominant trap sources for non‐radiative recombination quenching photogenerated carriers, and thus they seriously influence the charge extraction and damage the photovoltaic performance of PSCs.…”

Section: Introductionmentioning

confidence: 99%

Fluoroethylamine Engineering for Effective Passivation to Attain 23.4% Efficiency Perovskite Solar Cells with Superior Stability

Zhang

et al. 2021

Advanced Energy Materials

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Defects in perovskite layers usually cause nonradiative recombination, impairing device performance and stability. Here, fluoroethylamine (FC2H4NH3, FEA) is integrated into the perovskite film to passivate defects. By engineering of different amounts of fluorine in the molecule, it is found that when 2‐fluoroethylamine (1FEA), in which one F bonds to the first carbon atom at the end of the molecule's structure, is used, the F atoms appear to be distributed throughout the bulk to the very surface. When 2,2‐difluoroethylamine (2FEA) and 2, 2, 2‐trifluoroethylamine (3FEA) are used, F is prone to distribution in the bulk of the perovskite film, while there appears to be no detectable F content on the surface. With the FEA passivation, the nonradiative recombination is suppressed, the carrier‐lifetime is improved to 840.01 ns, and the film‐air interface offers greater hydrophobicity, especially in the case of 1FEA, where because it is distributed throughout the film thickness, it passivates more defects and delivers the highest efficiency, as much as 23.40%. The device with 3FEA shows the best environmental stability; specifically, the bare cell without any encapsulation maintains 87% of its initial efficiency after exposure to the ambient environment for 1200 h.

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Intact 2D/3D halide junction perovskite solar cells via solid-phase in-plane growth

Cited by 422 publications

References 42 publications

Stability of Perovskite Solar Cells: Degradation Mechanisms and Remedies

Stability of Perovskite Solar Cells: Degradation Mechanisms and Remedies

Solution-processed two-dimensional materials for next-generation photovoltaics

Fluoroethylamine Engineering for Effective Passivation to Attain 23.4% Efficiency Perovskite Solar Cells with Superior Stability

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