Surface reconstruction strategy improves the all-inorganic CsPbIBr2 based perovskite solar cells and photodetectors performance

He, Jian; Su, Jie; Di, Jiayu; Lin, Zhenhua; Zhang, Siyu; Ma, Jing; Zhang, Jincheng; Liu, Shengzhong; Chang, Jingjing; Hao, Yue

doi:10.1016/j.nanoen.2022.106960

Cited by 44 publications

(46 citation statements)

References 47 publications

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“…Similarly, the instability of PerSCs is a severe issue affecting large-scale commercial applications. [92][93][94][95][96] It is known that the traps/defects existing at the interface and grain boundaries (GBs) will yield severe nonradiative recombination, hindering charge-density buildup and reducing the photo-voltage of devices (Fig. 3b).…”

Section: Long-term Stabilitymentioning

confidence: 99%

Recent advances of crosslinkable organic semiconductors in achieving solution-processed and stable optoelectronic devices

Zhao

Gao

et al. 2022

J. Mater. Chem. A

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Section: Long-term Stabilitymentioning

confidence: 99%

Recent advances of crosslinkable organic semiconductors in achieving solution-processed and stable optoelectronic devices

Zhao

Gao

et al. 2022

J. Mater. Chem. A

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“…The method can improve the film quality and adjust the surface energy levels, thus achieving more efficient charge extraction and transfer and inhibiting nonradiative recombination. [ 18 ] Meanwhile, the gradient distribution of FA + can accelerate the carrier transport to further suppress bulk recombination. Besides, the Br‐rich surface and FA + substitution can isolate moisture erosions.…”

Section: Interface Modifiersmentioning

confidence: 99%

Section: Interface Modifiersmentioning

confidence: 99%

“…[ 15 ] Methylamine halide (MAX) is often employed on CsPbI x Br 3− x intermediate phase films to form the in‐plane stress through a halide exchange reaction during the annealing process. [ 16–18 ] And, alkyl ammonium cations can form low‐dimensional (LD) perovskite and reduce defects on the surface. [ 19 ] The sulfur and nitrogen atoms in the π‐conjugated molecules are coordinated with the point defects, construct heterojunction, and improve carrier extraction.…”

Section: Introductionmentioning

confidence: 99%

“…Charge density difference of FA þ passivated perovskite surface, where the yellow and cyan regions represent the charge accumulation and depletion. Reproduced with permission [18]. Copyright 2022, Elsevier.…”

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confidence: 99%

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Organic Molecules in All‐Inorganic CsPbI_xBr_3−xPerovskite Solar Cells: Interface Modifiers or Precursor Additives

Chai

Chang

Zhang

et al. 2022

Adv Energy and Sustain Res

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Figure 10. a) Schematic diagram of the controlled and optimized crystallization process. Reproduced with permission. [125] Copyright 2022, Elsevier. b) Schematic process of the increased number of colloids mediated by PEG additive. Reproduced with permission. [128] Copyright 2019, Elsevier. c) The schematic process for the formation of the CsPbBr 3 via the one-step spin-coating process. Reproduced with permission. [129] Copyright 2020, Elsevier. d) The proposed mechanism for the elimination of phase segregation in CsPbI 2 Br film by PMMA. Reproduced with permission. [131] Copyright 2021, Chinese Institute of Electronics. e) The schematic illustration of the formation process for PEG: CsPbIBr 2 . Reproduced with permission. [130] Copyright 2020, Wiley-VCH. Figure 9. Schematic diagram of perovskite precursor solution with HEMA. Molecular chemical structure of HEMA additive and polymerization reactions during high-temperature annealing. Schematic representation of the presence of HEMA hydrophobic polymers at GBs. Reproduced with permission. [121]

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Stabilization of Inorganic Perovskite Solar Cells with a 2D Dion–Jacobson Passivating Layer

Prashanthan

et al. 2023

Advanced Materials

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Inorganic metal halide perovskites such as CsPbI3 are promising for high‐performance, reproducible and robust solar cells. However, inorganic perovskites are sensitive to humidity, which causes the transformation from the black phase to the yellow δ, non‐perovskite phase. Such phase instability has been a significant challenge to long‐term operational stability. Here, we report a surface dimensionality reduction strategy, using 2‐(4‐aminophenyl) ethylamine cation to construct a Dion‐Jacobson 2D phase that covers the surface of the 3D inorganic perovskite structure. The Dion‐Jacobson layer mainly grew at the grain boundaries of the perovskite, effectively passivating surface defects and providing favourable interfacial charge transfer. The resulting inorganic perovskite films exhibited excellent humidity resistance when submerged in an aqueous solution (Isopropanol: Water = 4: 1v/v) and exposed to a 50% humidity air atmosphere. The DJ 2D/3D inorganic perovskite solar cell (PSC) achieved a power conversion efficiency (PCE) of 19.5% with a Voc of 1.197 eV. It retained 83% of initial PCE after 1260 h of maximum power point tracking under 1.2 sun illumination. Our work demonstrates an effective way for stabilising efficient inorganic perovskite solar cells.This article is protected by copyright. All rights reserved

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Surface reconstruction strategy improves the all-inorganic CsPbIBr2 based perovskite solar cells and photodetectors performance

Cited by 44 publications

References 47 publications

Recent advances of crosslinkable organic semiconductors in achieving solution-processed and stable optoelectronic devices

Recent advances of crosslinkable organic semiconductors in achieving solution-processed and stable optoelectronic devices

Organic Molecules in All‐Inorganic CsPbI_xBr_3−xPerovskite Solar Cells: Interface Modifiers or Precursor Additives

Stabilization of Inorganic Perovskite Solar Cells with a 2D Dion–Jacobson Passivating Layer

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Surface reconstruction strategy improves the all-inorganic CsPbIBr2 based perovskite solar cells and photodetectors performance

Cited by 44 publications

References 47 publications

Recent advances of crosslinkable organic semiconductors in achieving solution-processed and stable optoelectronic devices

Recent advances of crosslinkable organic semiconductors in achieving solution-processed and stable optoelectronic devices

Organic Molecules in All‐Inorganic CsPbIxBr3−xPerovskite Solar Cells: Interface Modifiers or Precursor Additives

Stabilization of Inorganic Perovskite Solar Cells with a 2D Dion–Jacobson Passivating Layer

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Organic Molecules in All‐Inorganic CsPbI_xBr_3−xPerovskite Solar Cells: Interface Modifiers or Precursor Additives