Understanding steric-charge-dependence of conjugated passivators on π-Pb2+ bond strength for efficient all-inorganic perovskite solar cells

Zhang, Junshuai; Duan, Jialong; Zhang, Qiaoyu; Guo, Qiyao; Yan, Furi; Yang, Xiya; Duan, Yanyan; Tang, Qunwei

doi:10.1016/j.cej.2021.134230

Cited by 38 publications

(29 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As shown in Figure 5c, it was proposed that the space charge dependence of different π‐conjugated pyridine derivatives on the electron donor of inorganic CsPbIBr 2 film. [ 72 ] The photovoltaic performance is closely related to multitooth coordination and structural steric hindrance due to their synergistic effect on intramolecular electron cloud density and charge extraction. Compared with the pyridine (Py) molecule, the two N atoms in bipyridine (Bpy) can chelate Pb 2+ with low coordination due to the stronger electron density around the N atoms.…”

Section: Interface Modifiersmentioning

confidence: 99%

Section: Interface Modifiersmentioning

confidence: 99%

“…Copyright 2021, Wiley-VCH.c) The calculated electrostatic potential distribution of three molecules, and band alignment diagram for the PSC tailored by Bpy. Reproduced with permission [72]. Copyright 2021, Elsevier.…”

mentioning

confidence: 99%

See 2 more Smart Citations

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

View full text Add to dashboard Cite

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]

show abstract

Section: Interface Modifiersmentioning

confidence: 99%

Section: Interface Modifiersmentioning

confidence: 99%

See 1 more Smart Citation

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

View full text Add to dashboard Cite

show abstract

“…[ 26 ] However, the currently adopted fabrication processes of all‐inorganic CsPbI 3 perovskite film are strictly in an inert atmosphere to ensure the production of high‐performing PSCs, which greatly impedes their feasibility in large‐scale production. Recently, Br‐based all‐inorganic perovskites have also been investigated due to the superior stability and high open‐circuit voltage the device could achieve, [ 27–33 ] suggesting the great potential of halogen‐doping strategy in enhancing the stability of all‐inorganic perovskites. Recently, our group has reported an air‐processed all‐inorganic CsPbI 3− x Br x PSCs using ionic liquid methylammonium acetate (MAAc) as precursor solvent, where the tailored Pb‐O interaction and the N–H…I hydrogen bonds between MAAc and PbI 2 are shown to retard the crystallization process and stabilize the formation of high‐quality CsPbI 3− x Br x film in air.…”

Section: Introductionmentioning

confidence: 99%

“…[26] However, the currently adopted fabrication processes of all-inorganic CsPbI 3 perovskite film are strictly in an inert atmosphere to ensure the production of high-performing PSCs, which greatly impedes their feasibility in large-scale production. Recently, Br-based allinorganic perovskites have also been investigated due to the superior stability and high open-circuit voltage the device could achieve, [27][28][29][30][31][32][33] suggesting the great potential of halogen-doping strategy in enhancing the stability of all-inorganic perovskites.…”

mentioning

confidence: 99%

Ternary Halogen Doping for Efficient and Stable Air‐Processed All‐Inorganic Perovskite Solar Cells

Gao

Chao

et al. 2022

Solar RRL

View full text Add to dashboard Cite

Metal halide perovskites have emerged as the revolutionary semiconductor material in the field of various optoelectronic applications, among which perovskite solar cells (PSCs) have raced to the front in the third-generation photovoltaics. Notably, the single-junction PSCs based on organic-inorganic hybrid perovskites have recently achieved certified power conversion efficiency (PCE) of 25.5%. [1] However, organic-inorganic hybrid perovskites suffer from the long-term instability problem due to the presence of organic component that is sensitive to unfavorable conditions, including moisture, UV light, oxygen, and temperature. [2] To overcome this deficiency, all-inorganic perovskites (i.e., CsPbI 3 ) have drawn much attention mainly owing to their superior thermal stability [3] and high theoretical PCE of 28%. [4] However, the stability of CsPbI 3 with cubic phase (also known as α-phase or black phase) is shown to be poor under ambient conditions because of the spontaneous phase transition from photoactive cubic phase into orthorhombic non-perovskite δ-phase. [5] Therefore, the improvement of phase stability is of primary significance to achieve efficient and stable all-inorganic PSCs.Since 2015, great efforts have been made to develop effective strategies to stabilize the α-phase of CsPbI 3 perovskite, [6][7][8] such as precursor solution engineering, [9][10][11][12] compositional engineering, [13][14][15] interface engineering, [16][17][18][19][20] dimensional engineering. [21][22][23][24][25] These strategies are found to not only enhance the stability but also boost the PCE of the PSCs by improving the quality of all-inorganic perovskite film. Very recently, record-high PCE of 20.8% has been achieved in CsPbI 3 -based PSCs by developing the rational surface-defect control strategy, demonstrating the great promise of all-inorganic PSCs. [26] However, the currently adopted fabrication processes of all-inorganic CsPbI 3 perovskite film are strictly in an inert atmosphere to ensure the production of high-performing PSCs, which greatly impedes their feasibility in large-scale production. Recently, Br-based allinorganic perovskites have also been investigated due to the superior stability and high open-circuit voltage the device could achieve, [27][28][29][30][31][32][33] suggesting the great potential of halogen-doping strategy in enhancing the stability of all-inorganic perovskites.

show abstract

Debridement Strategy by Pre‐Bending Passivation for Flexible All‐Inorganic Perovskite Solar Cells Beyond 70 000 Bending Cycles

Liu,

Xu,

Han

et al. 2024

Adv Funct Materials

View full text Add to dashboard Cite

The mechanical durability and efficiency of all‐inorganic flexible perovskite solar cells (f‐PSCs) still require enhancement for practical applications. In this study, a creative debridement strategy to improve the mechanical durability and photovoltaic performance of all‐inorganic f‐PSCs by pre‐bending the flexible perovskite film and then depositing the passivation agent 2‐mercaptopyridine is proposed. The pre‐bending process induced the generation of microcracks in the perovskite film surface, and 2‐mercaptopyridine can more effectively penetrate the interior of the film through the microcracks, thereby further passivating deep surface defects. These microcracks and defects can be perfectly repaired by 2‐mercaptopyridine. Bidentate coordination sites of S and N in 2‐mercaptopyridine show stronger binding energy with surface defects. The debridement strategy effectively enhanced the crystallization of the film surface and markedly inhibited crack propagation during the film's bending process. The optimized device achieves a champion power conversion efficiency (PCE) of 14.74%. The pre‐bent and passivated all‐inorganic f‐PSC shows 104% of its initial PCE after 15 000 bending cycles at a curvature radius of 3 mm. Remarkably, even after undergoing 70 000 bending cycles at a curvature radius of 5 mm, pre‐bent, and passivated f‐PSC can retain over 93% of its initial PCE, exhibiting excellent mechanical durability.

show abstract

Understanding steric-charge-dependence of conjugated passivators on π-Pb2+ bond strength for efficient all-inorganic perovskite solar cells

Cited by 38 publications

References 48 publications

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

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

Ternary Halogen Doping for Efficient and Stable Air‐Processed All‐Inorganic Perovskite Solar Cells

Debridement Strategy by Pre‐Bending Passivation for Flexible All‐Inorganic Perovskite Solar Cells Beyond 70 000 Bending Cycles

Contact Info

Product

Resources

About

Understanding steric-charge-dependence of conjugated passivators on π-Pb2+ bond strength for efficient all-inorganic perovskite solar cells

Cited by 38 publications

References 48 publications

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

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

Ternary Halogen Doping for Efficient and Stable Air‐Processed All‐Inorganic Perovskite Solar Cells

Debridement Strategy by Pre‐Bending Passivation for Flexible All‐Inorganic Perovskite Solar Cells Beyond 70 000 Bending Cycles

Contact Info

Product

Resources

About

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

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