Dion-Jacobson and Ruddlesden-Popper double-phase 2D perovskites for solar cells

Fu, Ping; Liu, Yang; Yu, Shuwen; Yin, Heng; Yang, Bowen; Ahmad, Sajjad; Guo, Xin; Li, Can

doi:10.1016/j.nanoen.2021.106249

Cited by 47 publications

(51 citation statements)

References 41 publications

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“…We expect that organic cations with multiple N atoms can form strong hydrogen bonding and stabilize different structures beyond 2D perovskites. Researchers have recently tried to combine the advantages of the RP and DJ phases for optoelectronic applications such as high-performing solar cells . However, it is challenging to determine the exact phase and structure on the spin-coated films.…”

Section: Discussionmentioning

confidence: 99%

“…They used zwitterion taurine as a template for the growth of two different metal layers or two layers of different structures (connections) of the same metal in single crystals. Others have tried to combine different spacer cations, taking advantage of both the RP and DJ phases in solar cells . Still, determining the exact structure is a challenge in thin films.…”

Section: Introductionmentioning

confidence: 99%

“…Others have tried to combine different spacer cations, taking advantage of both the RP and DJ phases in solar cells. 13 Still, determining the exact structure is a challenge in thin films. Yan et al reported the mixed alkyl−aryl cations in chiral 2D perovskites.…”

Section: ■ Introductionmentioning

confidence: 99%

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Ordered Mixed-Spacer 2D Bromide Perovskites and the Dual Role of 1,2,4-Triazolium Cation

Dong

Volonakis

et al. 2022

Chem. Mater.

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halide perovskites exhibit extraordinary stability and structural diversity because they can incorporate different organic cations (both cage A-site cation and the spacers). Here, we report on the behavior of Tz = 1,2,4-triazolium as an A-site cation as well as a spacer cation in new perovskite compounds. We describe the synthesis and structure−property relationships of a new family of hydrogen-bonding stabilized 2D perovskites (IPA) 2 (Tz) n−1 Pb n Br 3n+1 (n = 1−3) (IPA = isopropylammonium, Tz = 1,2,4triazolium), which represents the rare example of 2D perovskites incorporating the large A-site cation (Tz) that can form both the n = 2 and 3 phases. However, excess of Tz cations can split the n = 2 layers to act as a spacer and combine with another spacer PA (PA = propylammonium) or BA (BA = butylammonium) to form n = 1 structures (PA)(Tz)PbBr 4 and (BA)(Tz)PbBr 4 . These ordered mixed-spacer perovskites with different interlayer distances are unusual because the different spacers tend to stay in the same interlayer. (IPA) 2 (Tz) n−1 Pb n Br 3n+1 all exhibit broad photoluminescence emission but for different reasons. For the n = 1 phase, the large octahedral tilting (small Pb−Br−Pb angle) gives rise to the broad emission, while for the n = 2 and 3 phases, the individual octahedral distortion (large distortion index) plays a more important role. For the mixedspacer (PA)(Tz)PbBr 4 and (BA)(Tz)PbBr 4 , their band gaps are in between the parent n = 1 compounds [(BA) 2 PbBr 4 or (PA) 2 PbBr 4 , and (Tz) 2 PbBr 4 ]. Density functional theory calculations suggest that the band structures of (PA)(Tz)PbBr 4 and (BA)(Tz)PbBr 4 combine features from both parent compounds yet differ from a simple superposition. This work demonstrates the dual role of Tz molecules as the A-site cation in multilayer 2D perovskites and as the spacer in ordered mixed-spacer 2D phases.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ordered Mixed-Spacer 2D Bromide Perovskites and the Dual Role of 1,2,4-Triazolium Cation

Dong

Volonakis

et al. 2022

Chem. Mater.

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“…Room-temperature and low-temperature photophysics studies of 3D HOIPs are done extensively to reveal exciting phenomena like; positive temperature coefficient of the bandgap, lower-energy side Urbach focus, and presence of defects and localized states. − However, despite being proven to be useful for various optoelectronic device applications, a detailed study of 2D perovskites is relatively less explored in the community. It is a widely accepted fact that it is essential or a prerequisite to understand the photophysics of 2D perovskites to understand Ruddlesden–Popper (RP) and Dion–Jacobson (DJ) phase trendy halide perovskites …”

mentioning

confidence: 99%

“…It is a widely accepted fact that it is essential or a prerequisite to understand the photophysics of 2D perovskites to understand Ruddlesden−Popper (RP) and Dion−Jacobson (DJ) phase trendy halide perovskites. 11 2D layered perovskites (A 2 PbX 4 ) are made up of two components, one part is an inorganic well (PbX 6 4− octahedra, where X is halide ion), and another part is an organic barrier (A-long-chain organic cation). 12,13 Semiconductors with structures like quantum well (i.e., 2D perovskites) 12,14,15 and quantum dots (i.e., inorganic or perovskite nanocrystals (PNCs)) 16−20 have strong confinement effects.…”

mentioning

confidence: 99%

Origin of Contrasting Emission Spectrum of Bromide versus Iodide Layered Perovskite Semiconductors

Laxmi

Kabra

2022

J. Phys. Chem. Lett.

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The origin of broadband emission is studied using temperature-dependent time-resolved photoluminescence (PL) spectra for two-dimensional (2D) layered halide perovskites (i.e., (PEA)2PbBr4 = phenylethylammonium lead bromide and (PEA)2PbI4 = phenylethylammonium lead iodide) semiconductors. Both perovskite systems show only a single peak exciton emission at room temperature, which becomes multipeak exciton emissions at low temperatures. For temperatures below 100 K, the (PEA)2PbBr4 film gives broad PL emission, Stokes shifted by 750 meV from narrow exciton emission peaks, whereas the (PEA)2PbI4 film does not show any broad emission. Kinetics of various peaks could provide useful insight to propose a consistent energy level scheme associated with a barrier (PEA) and well (PbX6 4–) material system’s electronic states. This broad emission in (PEA)2PbBr4 perovskite is observed due to coupling of triplet states in the inorganic well (PbBr6 4–) and organic barrier (PEA) layer, which is in contrast to a proposed model based on self-trapped exciton.

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The Spacer Cation with Disulfide Bond for Efficient and Stable Low‐Dimensional Dion–Jacobson Perovskite Solar Cells

Miao,

Cao,

Peng

et al. 2023

Adv Funct Materials

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Low‐dimensional (LD) perovskite has provided an exciting avenue for exploring stable perovskite solar cells (PSCs). However, PSCs based on LD perovskites still suffer from poor efficiency owing to unfavorable charge carrier dynamics. Here, cystamine (CYS) is employed as a ligand to construct LD Dion‐Jacobson (LDDJ) perovskite (CYS)MAn‐1PbnI3n+1 (n = 1, 2, 3…, MA: methylamine) for improving carrier properties. The disulfide bond not only changes the polarization characteristic but also increases the coupling between inorganic slabs due to the low barrier of rotation around the S‐S axis, thus reducing the exciton binding energy of CYS‐based LDDJ perovskite. Disulfide bonds provide a scene for charge localization in the interlayer region, which is conducive to reducing the anisotropy of charge transfer. Thanks to these merits, the (CYS)MA4Pb5I16 film delivers improved carrier diffusion length (electron for 1345 nm and hole for 950 nm) and mobility (9.23 cm2 V−1 S−1). As a result, the (CYS)(MA)4Pb5I16 PSC achieves a champion power conversion efficiency (PCE) of 16.52%, which is much higher than that of HDA and BA cations‐based PSCs (HDA: 1,6‐Hexanediamine, BA: Butylamine). Furthermore, the state‐of‐the‐art device only lost 8% of its initial PCE after 1600 h in the atmosphere.

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Dion-Jacobson and Ruddlesden-Popper double-phase 2D perovskites for solar cells

Cited by 47 publications

References 41 publications

Ordered Mixed-Spacer 2D Bromide Perovskites and the Dual Role of 1,2,4-Triazolium Cation

Ordered Mixed-Spacer 2D Bromide Perovskites and the Dual Role of 1,2,4-Triazolium Cation

Origin of Contrasting Emission Spectrum of Bromide versus Iodide Layered Perovskite Semiconductors

The Spacer Cation with Disulfide Bond for Efficient and Stable Low‐Dimensional Dion–Jacobson Perovskite Solar Cells

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