Shedding light on the energy applications of emerging 2D hybrid organic-inorganic halide perovskites

Li, Neng; Yang, Yufei; Shi, Zuhao; Lan, Zhigao; Arramel, Arramel; Zhang, Peng; Ong, Wee‐Jun; Jiang, Jizhou; Lu, Jianfeng

doi:10.1016/j.isci.2022.103753

Cited by 11 publications

(7 citation statements)

References 140 publications

(154 reference statements)

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“…Now, we turn our attention to the differences in the steady-state absorption and emission spectra of P1 and P2 and compare them with those of other Mn-based perovskites. Several factors are expected to contribute to the photophysical behavior of the studied structures, some of which are more specific for Mn 2+ -perovskites, such as the Mn-Mn distances and electron-phonon couplings, while others are more general and can be extrapolated from other types of perovskites (such as H-bonding and other non-covalent interactions or structural arrangement [ 58 , 59 , 60 ]). Related to the structure, we believe that the observed difference in the behavior of P1 and P2 could stem from differences in the structural arrangement of the Mn-bromide clusters due to the used organic ligand.…”

Section: Resultsmentioning

confidence: 99%

“…Related to the structure, we believe that the observed difference in the behavior of P1 and P2 could stem from differences in the structural arrangement of the Mn-bromide clusters due to the used organic ligand. We hypothesize that the EA organic monocation in P1 most probably gives rise to either a 3D hybrid organic–inorganic perovskite (HOIP), BMX 3 (B = small organic cation; X = halide and M = metal) or a structure similar to Ruddlesden–Popper-like 2D layered HOIP [ 60 , 61 ]. In both cases, these allow for shorter distances between the luminescent Mn centers resulting in a stronger coupling.…”

Section: Resultsmentioning

confidence: 99%

“…Independently on whether the obtained structures are 3D or 2D HOIP, the strength of the non-covalent interactions (H-bonding, halogen bonding, van der Waals, to name a few) plays a significant role in the structural stability and phase transformation [ 58 , 59 , 60 , 63 ]. In these structures, the organic cations interact with the surrounding metal clusters through weak secondary H-bonding, with energies lower than 0.1 eV per bond [ 58 , 64 ].…”

Section: Resultsmentioning

confidence: 99%

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The Effects of Mono- and Bivalent Linear Alkyl Interlayer Spacers on the Photobehavior of Mn(II)-Based Perovskites

Rakshit

Medina

Lezama

et al. 2023

IJMS

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Mn(II)-based perovskite materials are being intensively explored for lighting applications; understanding the role of ligands regarding their photobehavior is fundamental for their development. Herein, we report on two Mn (II) bromide perovskites using monovalent (perovskite 1, P1) and bivalent (perovskite 2, P2) alkyl interlayer spacers. The perovskites were characterized with powder X-ray diffraction (PXRD), electron spin paramagnetic resonance (EPR), steady-state, and time-resolved emission spectroscopy. The EPR experiments suggest octahedral coordination in P1 and tetrahedral coordination for P2, while the PXRD results demonstrate the presence of a hydrated phase in P2 when exposed to ambient conditions. P1 exhibits an orange-red emission, while P2 shows a green photoluminescence, as a result of the different types of coordination of Mn(II) ions. Furthermore, the P2 photoluminescence quantum yield (26%) is significantly higher than that of P1 (3.6 %), which we explain in terms of different electron-phonon couplings and Mn-Mn interactions. The encapsulation of both perovskites into a PMMA film largely increases their stability against moisture, being more than 1000 h for P2. Upon increasing the temperature, the emission intensity of both perovskites decreases without a significant shift in the emission spectrum, which is explained in terms of an increase in the electron-phonon interactions. The photoluminescence decays fit two components in the microsecond regime—the shortest lifetime for hydrated phases and the longest one for non-hydrated phases. Our findings provide insights into the effects of linear mono- and bivalent organic interlayer spacer cations on the photophysics of these kinds of Mn (II)-based perovskites. The results will help in better designs of Mn(II)-perovskites, to increase their lighting performance.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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The Effects of Mono- and Bivalent Linear Alkyl Interlayer Spacers on the Photobehavior of Mn(II)-Based Perovskites

Rakshit

Medina

Lezama

et al. 2023

IJMS

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“…At present, the use of two-dimensional (2D) layered structures has become an effective means of consensus. By introducing organic ligands such as aliphatic or aromatic alkylammonium with a large ion radius, the 2D perovskite devices exhibit significantly improved stability. − …”

Section: Introductionmentioning

confidence: 99%

Roles of Organic Ligands in Ambient Stability of Layered Halide Perovskites

Zhang

Yang

Bobba

et al. 2022

ACS Appl. Mater. Interfaces

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The combination of organic ligands and inorganic Pb−I frameworks in layered perovskites has bestowed upon them high structural tunability and stability, while their microscopic degradation mechanism remains unclear. Here, we found the key role of ligands in intrinsic structural stability and the consequent morphological evolution in layered perovskites during long-term ambient aging based on (GA)(MA) n Pb n I 3n+1 (GA = guanidinium, = 4) and (BDA)(MA) n−1 Pb n I 3n+1 (BDA = 1,4-butanediammonium, < n > = 4) perovskites. The BDA-based perovskites have a low intrinsic stability due to high crystal formation energy (ΔH), which are prone to hydration during ambient aging. We overserved changed crystal orientation from perpendicular to parallel, a delayed charge populating time from <1 ps to >50 ps, an inhibited carrier transfer kinetics between quantum wells, an increase of 0.9 μs of charge carrier transport time and a decrease of 1.2 μs of charge carrier lifetime in the BDA-based film during ambient aging, which accounts for a large power-conversion efficiency (PCE) loss (14.2% vs 11.2%). By contrast, the GA ligand increases the intrinsic structural stability of perovskites, which not only yields an initial PCE as high as 20.0% but also helps retain excellent optoelectronic properties during aging. Therefore, only a slight PCE loss (20.0% vs 19.1%) was observed. Our work reveals the key role of organic−inorganic interaction affecting the intrinsic structural stability and optoelectronic properties, and provides a theoretical basis for the future design of stable and efficient optoelectronic devices.

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“…Two-dimensional (2D) halide perovskite single crystals have received great attention owing to their special characteristics, including high crystallinity, efficient photoluminescence characteristic, long carrier diffusion length, and excellent optoelectronic performance. − These 2D perovskites also hold great promise in enabling precise control over a broad spectrum of optical properties due to their high tunability in both composition and structure. − Moreover, in previous reports it has been shown that 2D perovskite epitaxial heterostructures can be successfully synthesized by using rigid conjugated ligands to substantially inhibit ion interdiffusion across the interface. This heterostructure platform provides a variety of potential applications of 2D perovskite single crystals .…”

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confidence: 99%

One-Step Solution Patterning for Two-Dimensional Perovskite Nanoplate Arrays

et al. 2023

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Two-dimensional perovskite crystals have attracted significant attention for their diverse optoelectronic characteristics, owing to their superior semiconducting properties. However, the majority of studies to date have focused on single crystals, which pose challenges for integration into device arrays due to their incompatibility with selective growth or conventional lithography techniques. Here, a facile one-step solution process for synthesizing 2D perovskite crystal arrays is proposed through meniscus-guided coating on patterned substrates. We further utilized this method for the synthesis of lateral heterostructure nanoplate arrays. Six different 2D perovskite nanoplate arrays, including epitaxial heterostructures, are successfully realized. Optical and crystallographic characterizations show the high optical performance and crystallinity of the nanoplates. Moreover, this method is further employed to prepare high-performance 2D perovskite nanoplate photosensor arrays. This strategy can be utilized as a guideline for the fundamental investigation of optical properties and the development of high-performance optoelectronics of perovskite materials including photosensors and displays.

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Shedding light on the energy applications of emerging 2D hybrid organic-inorganic halide perovskites

Cited by 11 publications

References 140 publications

The Effects of Mono- and Bivalent Linear Alkyl Interlayer Spacers on the Photobehavior of Mn(II)-Based Perovskites

The Effects of Mono- and Bivalent Linear Alkyl Interlayer Spacers on the Photobehavior of Mn(II)-Based Perovskites

Roles of Organic Ligands in Ambient Stability of Layered Halide Perovskites

One-Step Solution Patterning for Two-Dimensional Perovskite Nanoplate Arrays

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