Regulating the phase stability and bandgap of quasi-2D Dion–Jacobson CsSnI<sub>3</sub> perovskite <i>via</i> intercalating organic cations

Sun, Qian; Zhi, Fang; Zheng, Yapeng; Yang, Zuobao; Hu, Feng; Yang, Yang; Yang, Weiyou; Hou, Xinmei; Shang, Minghui

doi:10.1039/d1ta10246j

Cited by 9 publications

(9 citation statements)

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“…3D pure FASnI 3 perovskites excited orthorhombic Amm2 symmetry and cubic Pm3m symmetry as two main crystal structures. [29] Unlike MASnI 3 perovskites, FASnI 3 perovskites showed thermodynamically stable structure at 273 K. FASnI 3 perovskites can tune their p-type conductivity behavior to intrinsic conductivity behavior via changed growth conditions. [48] Different from MASnI 3 and FASnI 3 tin perovskites, CsSnI 3 are all-inorganic tin perovskites.…”

Section: The Development Of Low-dimensional Snbased Perovskite Solar ...mentioning

confidence: 98%

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Dimensional Tailoring Endows Tin Halide Perovskite Solar Cells with High Efficiency and Stability

Feng¹

2022

MatLab

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Tin halide perovskite solar cells (TPSCs) have been recognized as one of the most promising candidates for efficient and stable eco-friendly photovoltaic technology. The certified power conversion efficiency of TPSCs has been delivered to over 14% recently. Emerging low-dimensional tin halide perovskites such as Ruddlesden-Popper (RP), Dion−Jacobson (DJ), or 2D-3D perovskite structures have recently offered new approaches to stabilizing tin perovskite devices. Given the important role of low-dimensional tin perovskites, in this review, we focused on the dimensionality regulation in TPSCs to clarify the rule of performance and stability. We first discussed the structural flexibility and optoelectronic properties of tin halide perovskites. Moreover, the updated development along with the use of large organic spacer cations was assessed. Last, we reviewed the status of RP, DJ, 2D-3D mixed perovskites, and surface passivation strategy to boost the efficiency and operational stability of TPSCs, further highlighting the current challenges to enhancing these key performance metrics.

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Section: The Development Of Low-dimensional Snbased Perovskite Solar ...mentioning

confidence: 98%

“…The emergence of metallic properties is attributed to the doping effects. [29] Meanwhile, Sn perovskites would have higher conductivity when considering the self-p-doping effect caused by oxidation phenom-…”

Section: The Optoelectronic Properties Of Sn Halide Perovskites From ...mentioning

confidence: 99%

Dimensional Tailoring Endows Tin Halide Perovskite Solar Cells with High Efficiency and Stability

Feng¹

2022

MatLab

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“…26 DJ perovskites incorporate diammonium cations which are bound by hydrogen bonds to the layers of inorganic metal halide octahedra and exhibit no offset of inorganic layers. 26 Different 2D (single layers of inorganic tin halide octahedra separated by spacer cations) and quasi-2D (multiple layers of inorganic tin halide octahedra separated by spacer cations) tin halide perovskites have been reported to date, [1][2][3][5][6][7][8]17,22,[27][28][29][30][31][32][33][34] including both RP 1,2,[6][7][8]17,22,30,34 and DJ 3,5,[27][28][29][30][31][32][33] perovskite materials. In general, these materials exhibit improved stability compared to 3D tin-based perovskites.…”

Section: Introductionmentioning

confidence: 99%

Effects of ambient exposure on photoluminescence of Dion–Jacobson tin-based halide perovskites

et al. 2023

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“…Intercalation of PPDA 2+ cations can greatly enhance out‐of‐plane charge transport and stability of the 2D perovskites with the aid of the conjugated electronic configures and stronger electron coupling. Compared with ThDMA 2+ intercalated quasi‐2D perovskites, [ 35 ] the DJ (PPDA)Cs n ‐1 Sn n I 3 n +1 perovskites might result in significantly improved photoelectric conversion efficiency, which can be attributed to the smaller bandgap and stronger electrical conductivity owing to the improved enhanced structural stability due to the hydrogen bond interaction between the organic spacers and the inorganic layer.…”

Section: Introductionmentioning

confidence: 99%

Improving Out‐of‐Plane Charge Mobility and Phase Stability of Dion‐Jacobson Lead‐Free Perovskites via Intercalating π‐Conjugated Aromatic Spacers

Sun

Shang

Zhi

et al. 2023

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Currently, the perovskite solar cells (PSCs) with CsSnI 3 as solar energy absorbers hold a PCE ≈10%, [10] which is far below the theoretical efficiency of CsSnI 3 PSCs exceeding 30% [11] and the record PCE of lead-based perovskite solar cells. [12] Moreover, the PCE of α-CsSnI 3 perovskite suffers a significant reduction because the crystal structure undergoes a phase transition. [13] When exposed to air or organic solvents, the divalent Sn 2+ is prone to oxidize and change to Sn 4+ . Then the α-CsSnI 3 perovskite readily transforms into the low-symmetry B-γ CsSnI 3 phase, followed by the thermodynamically more stable but photon inert Y-phase (yellow with a bandgap of 2.6 eV), [14][15][16] and finally deforms to Cs 2 SnI 6 with weak light absorption ability. [7,9,17,18] Inspiringly, the interface engineering strategy of converting 3D bulk perovskites into 2D layered perovskites can significantly enhance the photovoltaic performance and stability of 3D Sn-based PSCs. [19][20][21] Two-dimensional perovskites can be constructed by intercalating the charged spacer cations into the 3D structure along various crystal planes, such as the (100), (110), and (111), etc. [22][23][24] The layered Dion-Jacobson phase perovskites hold the stoichiometric formula A″A n−1 B n X 3n+1 (A″: denotes the divalent organic cations; A: represent the monovalent cation (such as MA + , FA + , and Cs + ); B: represent the divalent metal (denoted as Pb 2+ , Sn 2+ ); X: denotes the halide anion (like I − , Br − , and Cl − ); n: represent the number of the inorganic layer). The inorganic layer number (n) not only enriches the structural complexity of the perovskite family but also allows fine-tuning of the optoelectronic properties, such as tunable natural quantum wells. [23,[25][26][27] However, the photogenerated excitons are confined within the inorganic wells because of the dielectric constant mismatch between the organic and inorganic components of 2D perovskites, leading to a significantly improved exciton binding energy. [28,29] Conventional 2D lead-halide perovskites, normally display exciton binding energies of several hundred meV because of the nonpolar nature of the organic cations. [30] Compared with 3D perovskites, 2D perovskites exhibit larger exciton binding energy (E b ), [31] smaller dielectric constant (ε r ), [32] and higher open-circuit voltage (V OC ). [33] Meanwhile, the enhanced carrier effective masses suggest the charge mobility of the perovskite is enormously impeded by the organic layer. [32,34] The layered quasi-2D perovskites are recognized as one of the effective strategies to resolve the big problem of intrinsic phase instability of the perovskites. However, in such configurations, their performance is fundamentally limited due to the correspondingly weakened out-of-plane charge mobility. Herein, the π-conjugated p-phenylenediamine (PPDA) is introduced as organic ligand ions for rationally designing lead-free and tin-based 2D perovskites with the aid of theoretical computation. It is evidenced that both out-of-pla...

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Regulating the phase stability and bandgap of quasi-2D Dion–Jacobson CsSnI₃ perovskite via intercalating organic cations

Abstract: Currently, as a promising alternative of lead halide perovskites, the nontoxicity lead-free CsSnI3 perovskites have drawn increasing attention. However, the development of tin-based perovskites is still greatly hindered by their...

Cited by 9 publications

References 66 publications

Dimensional Tailoring Endows Tin Halide Perovskite Solar Cells with High Efficiency and Stability

Dimensional Tailoring Endows Tin Halide Perovskite Solar Cells with High Efficiency and Stability

Effects of ambient exposure on photoluminescence of Dion–Jacobson tin-based halide perovskites

Improving Out‐of‐Plane Charge Mobility and Phase Stability of Dion‐Jacobson Lead‐Free Perovskites via Intercalating π‐Conjugated Aromatic Spacers

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Regulating the phase stability and bandgap of quasi-2D Dion–Jacobson CsSnI3 perovskite via intercalating organic cations

Abstract: Currently, as a promising alternative of lead halide perovskites, the nontoxicity lead-free CsSnI3 perovskites have drawn increasing attention. However, the development of tin-based perovskites is still greatly hindered by their...

Cited by 9 publications

References 66 publications

Dimensional Tailoring Endows Tin Halide Perovskite Solar Cells with High Efficiency and Stability

Dimensional Tailoring Endows Tin Halide Perovskite Solar Cells with High Efficiency and Stability

Effects of ambient exposure on photoluminescence of Dion–Jacobson tin-based halide perovskites

Improving Out‐of‐Plane Charge Mobility and Phase Stability of Dion‐Jacobson Lead‐Free Perovskites via Intercalating π‐Conjugated Aromatic Spacers

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Regulating the phase stability and bandgap of quasi-2D Dion–Jacobson CsSnI₃ perovskite via intercalating organic cations