Highly efficient p-i-n perovskite solar cells that endure temperature variations

Science, Год журнала: 2023, Номер 379(6630), С. 399 - 403

Опубликована: Янв. 26, 2023

Daily temperature variations induce phase transitions and lattice strains in halide perovskites, challenging their stability solar cells. We stabilized the perovskite black improved cell performance using ordered dipolar structure of β-poly(1,1-difluoroethylene) to control film crystallization energy alignment. demonstrated p-i-n cells with a record power conversion efficiency 24.6% over 18 square millimeters 23.1% 1 centimeter, which retained 96 88% after 1000 hours 1-sun maximum point tracking at 25° 75°C, respectively. Devices under rapid thermal cycling between -60° +80°C showed no sign fatigue, demonstrating impact on operational

Язык: Английский

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Modulation of nucleation and crystallization in PbI₂ films promoting preferential perovskite orientation growth for efficient solar cells

Energy & Environmental Science, Год журнала: 2022, Номер 16(1), С. 252 - 264

Опубликована: Дек. 9, 2022

PFAT promotes the secondary growth of PbI 2 clusters and early formation favorable perovskite phases via a two-step sequential deposition approach.

Язык: Английский

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Crystallization manipulation and holistic defect passivation toward stable and efficient inverted perovskite solar cells

Energy & Environmental Science, Год журнала: 2023, Номер 16(9), С. 3825 - 3836

Опубликована: Янв. 1, 2023

Synergistic modification of new intermediate phase assisted crystallization and upper interface passivation for enhanced crystallization, reduced defect density, released stress in perovskite films, enabling 24.61% efficient inverted devices.

Язык: Английский

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24.8%-efficient planar perovskite solar cells via ligand-engineered TiO2 deposition

Joule, Год журнала: 2022, Номер 6(9), С. 2186 - 2202

Опубликована: Авг. 4, 2022

Язык: Английский

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Device Performance of Emerging Photovoltaic Materials (Version 3)

Advanced Energy Materials, Год журнала: 2022, Номер 13(1)

Опубликована: Дек. 9, 2022

Abstract Following the 2nd release of “Emerging PV reports,” best achievements in performance emerging photovoltaic devices diverse research subjects are summarized, as reported peer‐reviewed articles academic journals since August 2021. Updated graphs, tables, and analyses provided with several parameters, e.g., power conversion efficiency, open‐circuit voltage, short‐circuit current density, fill factor, light utilization stability test energy yield. These parameters presented a function bandgap average visible transmittance for each technology application, put into perspective using, detailed balance efficiency limit. The 3rd installment reports” extends scope toward triple junction solar cells.

Язык: Английский

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Recent progress in perovskite solar cells: from device to commercialization

Science China Chemistry, Год журнала: 2022, Номер 65(12), С. 2369 - 2416

Опубликована: Ноя. 3, 2022

Язык: Английский

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Pushing the Limit of Open‐Circuit Voltage Deficit via Modifying Buried Interface in CsPbI₃ Perovskite Solar Cells

Advanced Materials, Год журнала: 2022, Номер 35(7)

Опубликована: Ноя. 19, 2022

Although CsPbI3 perovskites have shown tremendous potential in the photovoltaic field owing to their excellent thermal stability, device performance is seriously restricted by severe photovoltage loss. The buried titanium oxide/perovskite interface plays a critical role interfacial charge transport and perovskite crystallization, which closely related open-circuit voltage deficit stemming from nonradiative recombination. Herein, target molecules named 3-sulphonatopropyl acrylate potassium salts are deliberately employed with special functional groups for modifying interface, giving rise favorable functions terms of passivating defects, optimizing energetic alignment, facilitating crystallization. Experimental characterizations theoretical calculations reveal that modification inhibits electron transfer barrier simultaneously improves crystal quality, thereby reducing trap-assisted recombination Consequently, omnibearing regarding endows devices an impressive efficiency 20.98%, achieving record-low VOC 0.451 V. as-proposed strategy renders universal prescription push limit deficit, showing promising future developing high-performance all-inorganic photovoltaics.

Язык: Английский

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24.96%‐Efficiency FACsPbI₃ Perovskite Solar Cells Enabled by an Asymmetric 1,3‐Thiazole‐2,4‐Diammonium

Advanced Energy Materials, Год журнала: 2023, Номер 13(15)

Опубликована: Март 1, 2023

Abstract Surmounting complicated defects at the electron transport layer (ETL) and perovskite interface plays a non‐trivial role in improving efficiency stability of solar cells (PSCs). Herein, an asymmetric modification strategy (AIMS) is developed to passivate from both SnO 2 ETL buried surface via incorporating 1,3‐thiazole‐2,4‐diammonium (TDA) into /perovskite interface. Detailed experimental calculated results demonstrate that N3 (the nitrogen atom bonding imine) TDA preferentially cures free hydroxyl (OH), oxygen vacancy ( V O ), Sn‐related on surface, while N1 vinyl) more inclined Pb 2+ I − related surface. As result, TDA‐modified FACsPbI 3 PSC yields champion power conversion (PCE) 24.96% with gratifying open‐circuit voltage oc ) 1.20 V. In addition, optimized PSCs exhibit charming air‐operational unencapsulated device sustaining 97.04% its initial PCE after storage air conditions for 1400 h. The encapsulated maintains 90.21% maximum point tracking 500

Язык: Английский

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Metal‐Organic Framework Materials in Perovskite Solar Cells: Recent Advancements and Perspectives

Small, Год журнала: 2023, Номер 19(25)

Опубликована: Март 18, 2023

Abstract Organic–inorganic hybrid perovskite solar cells (PSCs) are among the most promising candidates for next generation of photovoltaic devices because significant increase in their power conversion efficiency (PCE) from less than 10% to 25.7% past decade. The metal‐organic framework (MOF) materials owing unique properties, such as large specific surface area, abundant binding sites, adjustable nanostructures, and synergistic effects, used additives or functional layers enhance device performance long‐term stability PSCs. This review focuses on recent advancements applications MOFs as/in different performance, impact, advantages MOF integrated into absorber, electron transport layer, hole interfacial layer reviewed. In addition, applicability mitigate leakage Pb 2+ halide perovskites corresponding is discussed. concludes with perspectives further research directions employing

Язык: Английский

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Intermediate Phase Engineering with 2,2‐Azodi(2‐Methylbutyronitrile) for Efficient and Stable Perovskite Solar Cells

Advanced Materials, Год журнала: 2023, Номер 35(23)

Опубликована: Март 24, 2023

Sequential deposition has been widely employed to modulate the crystallization of perovskite solar cells because it can avoid formation nucleation centers and even initial in precursor solution. However, challenges remain overcoming incomplete random transformation PbI2 films with organic ammonium salts. Herein, a unique intermediate phase engineering strategy developed by simultaneously introducing 2,2-azodi(2-methylbutyronitrile) (AMBN) both salt solutions regulate crystallization. AMBN not only coordinates form favorably mesoporous film due coordination between Pb2+ cyano group (C≡N), but also suppresses vigorous activity FA+ ions interacting FAI, leading full preferred orientation. Therefore, perovskites favorable facet orientations are obtained, defects largely suppressed owing passivation uncoordinated . As result, champion power conversion efficiency over 25% stabilized 24.8% is achieved. Moreover, device exhibits an improved operational stability, retaining 96% under 1000 h continuous white-light illumination intensity 100 mW cm-2 at ≈55 °C N2 atmosphere.

Язык: Английский

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