Tailoring passivators for highly efficient and stable perovskite solar cells

Nature Reviews Chemistry, Год журнала: 2023, Номер 7(9), С. 632 - 652

Опубликована: Июль 18, 2023

Язык: Английский

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Perovskite Grain‐Boundary Manipulation Using Room‐Temperature Dynamic Self‐Healing “Ligaments” for Developing Highly Stable Flexible Perovskite Solar Cells with 23.8% Efficiency

Advanced Materials, Год журнала: 2023, Номер 35(18)

Опубликована: Фев. 17, 2023

Flexible perovskite solar cells (pero-SCs) are the best candidates to complement traditional silicon SCs in portable power applications. However, their mechanical, operational, and ambient stabilities still unable meet practical demands because of natural brittleness, residual tensile strain, high defect density along grain boundaries. To overcome these issues, a cross-linkable monomer TA-NI with dynamic covalent disulfide bonds, H-bonds, ammonium is carefully developed. The cross-linking acts as "ligaments" attached on These consisting elastomers 1D perovskites can not only passivate boundaries enhance moisture resistance but also release strain mechanical stress 3D films. More importantly, elastomer repair bending-induced cracks film self-healing characteristics. resultant flexible pero-SCs exhibit promising improvements efficiency, record values (23.84% 21.66%) obtained for 0.062 1.004 cm2 devices; devices show overall improved T90 >20 000 bending cycles, operational stability >1248 h, (relative humidity = 30%) >3000 h. This strategy paves new way industrial-scale development high-performance pero-SCs.

Язык: Английский

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Molecular dipole engineering-assisted strain release for mechanically robust flexible perovskite solar cells

Energy & Environmental Science, Год журнала: 2023, Номер 16(11), С. 5423 - 5433

Опубликована: Янв. 1, 2023

–CN additives are used to sew defects at perovskite grain boundaries and release GB stresses, resulting in low Young's modulus & high mechanical flexibility. Furthermore, 2F-2CN with a stronger molecular dipole enhances the efficiency stability of inverted f-PSCs, yielding exceptional efficiency.

Язык: Английский

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Optimizing the Buried Interface in Flexible Perovskite Solar Cells to Achieve Over 24% Efficiency and Long‐Term Stability

Advanced Materials, Год журнала: 2023, Номер 36(7)

Опубликована: Окт. 7, 2023

The buried interface of the perovskite layer has a profound influence on its film morphology, defect formation, and aging resistance from outset, therefore, significantly affects quality device performance derived solar cells. Especially for FAPbI

Язык: Английский

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Backbone Engineering Enables Highly Efficient Polymer Hole‐Transporting Materials for Inverted Perovskite Solar Cells

Advanced Materials, Год журнала: 2022, Номер 35(12)

Опубликована: Дек. 31, 2022

The interface and crystallinity of perovskite films play a decisive role in determining the device performance, which is significantly influenced by bottom hole-transporting material (HTM) inverted solar cells (PVSCs). Herein, simple design strategy polymer HTMs reported, can modulate wettability promote anchoring introducing pyridine units into polyarylamine backbone, so as to realize efficient stable PVSCs. HTM properties be effectively modified varying linkage sites units, 3,5-linked PTAA-P1 particularly demonstrates more regulated molecular configuration for interacting with perovskites, leading highly crystalline uniform back contact reduced defect density. Dopant-free PTAA-P1-based PVSCs have realized remarkable efficiencies 24.89% (certified value: 24.50%) small-area (0.08 cm2 ) well 23.12% large-area (1 devices. Moreover, unencapsulated maintains over 93% its initial efficiency after 800 h maximum power point tracking under simulated AM 1.5G illumination.

Язык: Английский

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Minimized Energy Loss at the Buried Interface of p‐i‐n Perovskite Solar Cells via Accelerating Charge Transfer and Forming p–n Homojunction

Advanced Energy Materials, Год журнала: 2023, Номер 13(19)

Опубликована: Апрель 7, 2023

Abstract The energy loss ( E ) aroused by inefficient charge transfer and large level offset at the buried interface of p‐i‐n perovskite solar cells (PVSCs) limits their development. In this work, a BF 4 − anion‐assisted molecular doping (AMD) strategy is first proposed to improve capability hole transport layers (HTLs) reduce PVSCs. AMD improves carrier mobility density poly[bis(4‐phenyl) (2,4,6‐trimethylphenyl) amine] (PTAA) poly[ N , ′‐bis(4‐butilphenyl)‐ ′‐bis(phenyl)‐benzidine] (Poly‐TPD) HTLs while lowering Fermi levels. Meanwhile, BF4− anions regulate crystallization donor‐type iodine vacancies, resulting in energetics transformation from n‐type p‐type on bottom surface film. faster formed p–n homojunction recombination HTL/perovskite interface. PVSCs utilizing treated PTAA Poly‐TPD as demonstrate highest power conversion efficiency (PCE) 24.26% 22.65%, along with retaining 90.97% 85.95% initial PCE after maximum point tracking for 400 h. This work provides an effective way minimize accelerating forming homojunctions.

Язык: Английский

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Fundamental understanding of stability for halide perovskite photovoltaics: The importance of interfaces

Chem, Год журнала: 2023, Номер 10(1), С. 35 - 47

Опубликована: Сен. 29, 2023

Язык: Английский

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Strain Regulation via Pseudo Halide‐Based Ionic Liquid toward Efficient and Stable α‐FAPbI₃ Inverted Perovskite Solar Cells

Advanced Energy Materials, Год журнала: 2023, Номер 13(23)

Опубликована: Май 1, 2023

Abstract Inverted (p‐i‐n) perovskite solar cells have drawn great attention due to their outstanding stability and low‐temperature processibility. However, power conversion efficiency (PCE) still lags behind conventional (n‐i‐p) devices mainly the lack of strategies stabilize α ‐FAPbI 3 without changing bandgap. In this work, a facile effective strategy is reported regulate residual strain via pseudo halide‐based ionic liquids incorporation in inverted (PVSCs). The employment methylamine formate (MAFa) liquid enables homogenously stronger compressive restrain transition shared‐corner PbI 6 octahedron into shared‐face δ , as well affecting dynamic behavior carriers defects achieve record PCE (24.08%) among FAPbI up now. addition, MAFa results enhanced device stability, unencapsulated PVSC retains over 90% its initial after stored ambient environment (RH:30 ± 5%) for 1000 h. This work provides an efficient realize stable based PVSCs further catch with ones.

Язык: Английский

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Strategies for Improving Efficiency and Stability of Inverted Perovskite Solar Cells

Advanced Materials, Год журнала: 2024, Номер 36(37)

Опубликована: Март 1, 2024

Abstract Perovskite solar cells (PSCs) have attracted widespread research and commercialization attention because of their high power conversion efficiency (PCE) low fabrication cost. The long‐term stability PSCs should satisfy industrial requirements for photovoltaic devices. Inverted with a p‐i‐n architecture exhibit considerable advantages excellent competitive efficiency. continuously broken‐through PCE inverted shows huge application potential. This review summarizes the developments outlines characteristics including charge transport layers (CTLs), perovskite compositions, interfacial regulation strategies. latest effective CTLs, modification, promotion strategies especially under light, thermal, bias conditions are emphatically analyzed. Furthermore, applications structure in high‐efficiency stable tandem, flexible devices, modules main obstacles systematically introduced. Finally, remaining challenges faced by devices discussed, several directions advancing proposed according to development status industrialization requirements.

Язык: Английский

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Recent Advances of Inverted Perovskite Solar Cells

ACS Energy Letters, Год журнала: 2024, Номер 9(4), С. 1487 - 1506

Опубликована: Март 12, 2024

Inverted perovskite solar cells (PSCs) with p-i-n structure have recently attracted widespread attention owing to their fast-growing power conversion efficiency. In this Review, we focus on the progress in materials that contribute improved efficiency of inverted PSCs, including hole transport self-assembled monolayers as highlight, electron materials, and interface modification between charge layers for passivating defects. Then, discuss recent advances perovskites, optimization bandgap, interfacial band engineering, development film processing. Finally, point out challenges future perspectives further improving stability PSCs hope offering suggestions tackle hindrance commercial applications.

Язык: Английский

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