Revealing the Critical Role of Electron‐Withdrawing Cores in Bulk Passivation of Diammonium Ligands Toward High‐Performance Perovskite Solar Cells

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 20, 2025

Abstract Diammonium derivatives with electron‐withdrawing cores of cyclohexyl or phenyl have demonstrated enormous potential in achieving high‐performance perovskite solar cells. Nevertheless, the critical role these diammonium passivation on device performance is yet to be elucidated. Herein, two kinds ligands 1, 4‐cyclohexyldimethylammonium diiodide (CyDMADI) and 4‐phenyldimethylammonium (PhDMADI) are introduced into precursor for bulk passivation. The PhDMADI system exhibits a stronger unit comparison CyDMADI core, thus resulting enhanced electrostatic interaction between uncoordinated Pb 2+ groups hydrogen bonds I─Pb skeleton. Such strengthened interactions effectively inhibit generation trap states therefore significantly decrease non‐radiative recombination. PhDMADI‐passivated film demonstrates mitigated microstrain decreased grain boundary grooves （GBGs） compared CyDMADI‐based counterpart. Simultaneously, treatment can efficiently slow down hot‐carriers cooling dynamics process, benefiting transfer hot‐carriers. Consequently, achieves an impressive efficiency 26.04%, along excellent operating stability which retains 90% its initial after 1100 h tracking at maximum power point under continuous one sun illumination.

Язык: Английский

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High‐Performance Perovskite Solar Cells via Synergistic Grating Microstructures and Dynamic‐Bonded Ion‐Conductive Elastomers

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 25, 2025

Abstract Perovskite solar cells (PSCs) have emerged as a prominent focus in energy research owing to their remarkable power conversion efficiency (PCE). However, the realization, maintenance, and even repair of high perovskite are still difficult issues. Herein, synergistic strategy grating microstructures ion‐conducting elastomers (ICE) based on dynamic hindered urea‐carbamate bonds is proposed realize high‐efficiency long‐term stable PSCs. The microstructured PbI 2 (G‐PbI ) can initially optimize crystallization behavior perovskite, fact that introduction ICE achieves 25.61% efficient featuring graded demonstrates triple‐functionality: i) Abundant carbonyl (‐C(O)‐) coordination sites within strongly interact with , enhancing kinetics; ii) intrinsic conductivity facilitates charge carrier transport extraction at grain boundaries interfaces; iii) moisture‐responsive urea coupled bond reorganization endows device exceptional hydrothermal stability (T 80 >1500 h), more interestingly, ICE‐containing devices be simply heat‐treated recover photovoltaic performance. A hierarchical covalent networks opens new insights into field constructing, maintaining, restoring

Язык: Английский

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Theoretical simulation and experimental research of fluorine-substituted carbazole-diphenylamine derivatives as hole transport materials for perovskite solar cells

Applied Surface Science, Год журнала: 2024, Номер unknown, С. 161907 - 161907

Опубликована: Ноя. 1, 2024

Язык: Английский

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Polymerized non-fullerene small molecular acceptor as a versatile electron-transport material for 24.50 % efficiency inverted perovskite solar cells with extended spectral response

Chemical Engineering Journal, Год журнала: 2024, Номер 501, С. 157542 - 157542

Опубликована: Ноя. 10, 2024

Язык: Английский

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