Divalent organic cations as a novel protective layer for perovskite materials

Chen, Yan; Ding, Xiaobin; He, Han-Bin; Wang, Yaya; Xu, Shaopeng; Wang, Mengmeng; Li, Wei

doi:10.1039/d2ta09668d

Cited by 3 publications

(2 citation statements)

References 57 publications

(75 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This approach involves adjusting the composition and crystal structure of perovskites to achieve long-term stability. One example of this is the introduction of diamino-divalent organic cations to act as spacer molecules in hybrid perovskites, − which has been proven to improve their stability. In these structures, protonated organic cations readily can form hydrogen bonds with inorganic metal halides, creating dense accumulations between organic and inorganic components, to prevent moisture erosion. , However, the corresponding cases remain rare, which deserves to expand their application sphere, to better understand the relationship between the structure and stability of perovskites.…”

Section: Introductionmentioning

confidence: 99%

Three Semiconductive 1D Naphthalene Diimide/Iodoplumbate Perovskites with High Moisture Tolerance and Long-Lived Charge Separation States

et al. 2023

View full text Add to dashboard Cite

Low-dimensional inorganic−organic hybrid perovskites with high moisture tolerance and long-lived charge separation states have captured significant attention in the field of optoelectronic devices. To further achieve the relationship between crystal structures and stability, as well as charge separation behaviors, three one-dimensional hybrid perovskites containing electron-deficient naphthalene diimide ammonium (NDIEA) and electron-rich iodoplumbate chains, [(H 2 NDIEA)-, and [(HNDIEA) 2 Pb 2 I 6 ]•3H 2 O (3), were synthesized. Crystal structure determinations revealed various synthesis conditions leading to different stacking modes, especially the inorganic lead iodide fraction, which resulted in different water resistances and charge-separated behaviors. The comprehensive analysis found that strong intermolecular interactions (anion−π interactions and π−π interactions), and matching energy levels between protonated NDIEA and iodoplumbate chains, can facilitate the generation of long-lived charge separation states and extraordinary moisture stability, even in the water environment. In addition, the conductivity behavior of 3 was also explored in detail.

show abstract

Section: Introductionmentioning

confidence: 99%

Three Semiconductive 1D Naphthalene Diimide/Iodoplumbate Perovskites with High Moisture Tolerance and Long-Lived Charge Separation States

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Other factors, such as the thermodynamic properties, intermolecular interactions, and kinetic barriers, also play crucial roles in determining the overall stability of PSCs [40][41][42]. Therefore, a comprehensive understanding of the organic PSC behavior is also planned to study in the future by applying experimental techniques and more advanced modeling and simulation techniques via understanding relative energy levels and absorption data.…”

Section: Resultsmentioning

confidence: 99%

Insight into Perovskite Solar Cell Formation for Various Organohalides Perovskite Precursors in the Presence of Water at the Molecular Level

Zhantuarov

Kemelbekova

Shongalova

et al. 2023

Journal of Nanomaterials

View full text Add to dashboard Cite

Recently, hybrid (organic–inorganic) metal halide perovskites have gained significant attention due to their excellent performance in optoelectronics and photovoltaics (PV). Single-junction PV cells made from these materials have achieved record efficiencies of over 25%, with the potential for further improvement in the future. The crystal structure of organohalide perovskite semiconductors plays a crucial role in the success of perovskites. In this study, we used classical all-atom molecular dynamics simulations to investigate the dynamics of ionic precursors as they form organic halide perovskite units in the presence of water as a solvent. During the analysis of radial distribution functions, interaction energies, hydrogen bonding, and diffusion coefficients, it was confirmed that organic precursors aggregate in the absence of water and disperse in the presence of water. The interaction energies also showed that the organic precursors of the perovskite have weaker interactions with Pb than the other components of the perovskite. The hydrogen bonding analysis revealed that the number of hydrogen bonds between the organic precursors and Cl decreases in the presence of water, but hydrogen bonds form between the organic precursors/water and Cl/water. Additionally, the diffusion coefficients of the organic precursors were found to be in the following increasing order: 2,2-(ethylenedioxy) bis ethylammonium (EDBE2+) < guanidium (GA+) < phenethylammonium (PEA+) < iso-butylammonium (Iso-BA+).

show abstract

Excellent p-type conductivity of β-CsPbI3 with defect Pb vacancy: First-principles

Wu,

Liu,

Ying

et al. 2024

Computational Materials Science

View full text Add to dashboard Cite

Divalent organic cations as a novel protective layer for perovskite materials

Abstract: The traditional methylammonium lead iodide perovskite (MAPbI3) is not stable under humid conditions, which limits its application. In this work, a new type of system is designed by replacing two...

Cited by 3 publications

References 57 publications

Three Semiconductive 1D Naphthalene Diimide/Iodoplumbate Perovskites with High Moisture Tolerance and Long-Lived Charge Separation States

Three Semiconductive 1D Naphthalene Diimide/Iodoplumbate Perovskites with High Moisture Tolerance and Long-Lived Charge Separation States

Insight into Perovskite Solar Cell Formation for Various Organohalides Perovskite Precursors in the Presence of Water at the Molecular Level

Excellent p-type conductivity of β-CsPbI3 with defect Pb vacancy: First-principles

Contact Info

Product

Resources

About