Ion‐Dipole Interaction for Self‐Assembled Monolayers: A New Strategy for Buried Interface in Inverted Perovskite Solar Cells

Advanced Functional Materials, Год журнала: 2024, Номер 34(27)

Опубликована: Март 5, 2024

Abstract Nickel oxide (NiO X ) has a crucial role in enhancing the efficiency and stability of p‐i‐n inverted perovskite solar cells (PSCs), which hold great potential for commercialization. However, improving contact passivation between perovskites NiO is challenge due to hindered buried interface. In order address this issue, self‐assembled monolayers (SAMs) are introduced as buffer layer prevent direct non‐radiative recombination. While, large dipole moment SAMs increases work function , hole transport performance, given low interfacial barrier transfer. By combination first‐principles calculations, drive‐level capacitance profiling, transient absorption spectrum characterization, understanding ion‐dipole interactions interface mechanism potassium fluoride (KF) ultra‐thin provided. The PSCs high 23.25% obtained, unencapsulated devices kept 90% initial following 1400 h aging under nitrogen, demonstrate remarkable long‐term well. This novel strategy highlights significance at /perovskites provides new approach interfaces high‐efficiency PSCs.

Язык: Английский

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Understanding the Role of Crown Ether Functionalization in Inverted Perovskite Solar Cells

ACS Energy Letters, Год журнала: 2024, Номер 9(4), С. 1518 - 1526

Опубликована: Март 14, 2024

Inverted p-i-n structure perovskite solar cells (PSCs) have attracted considerable attention in consideration of high-efficiency, long-term stability, and cost reduction, which represent the key challenges advancing commercialization PSCs. In order to address issue defect-related nonradiative recombination, we enhanced interfacial passivation between layer electron transfer with crown ether derivatives By a combination first-principles calculations, photoluminescence (PL) time-resolved (TRPL) spectra, grazing-incidence wide-angle X-ray scattering (GIWAXS) characterization, provided an understanding mechanism obtained efficiency 23.3% NiOx-based PSCs, lowered recombination 25% voltage losses. Furthermore, unencapsulated PSCs kept 92% initial following 1224 h aging, demonstrated remarkable stability. The inverted could provide great potential for high-efficiency stable PSC designs promote

Язык: Английский

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Bilayer interface engineering through 2D/3D perovskite and surface dipole for inverted perovskite solar modules

eScience, Год журнала: 2024, Номер unknown, С. 100308 - 100308

Опубликована: Сен. 1, 2024

Язык: Английский

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Boosting Efficiency and Stability of NiO_x‐Based Inverted Perovskite Solar Cells Through D–A Type Semiconductor Interface Modulation

Advanced Functional Materials, Год журнала: 2024, Номер 34(25)

Опубликована: Янв. 9, 2024

Abstract NiO x is one of the promising inorganic hole transporting materials in inverted perovskite solar cells (PSCs), however, its device efficiency and stability are still limited by energy level mismatch, low intrinsic conductivity, high interface defect density, complex active species. Herein, use an imide‐based donor–acceptor type semiconductor (BTF14) as interlayer between proposed, which facilitates extraction transfer, reduces density at film bulk, further concentration Ni >3+ species to stabilize heterointerface. As a result, power conversion PSCs can be significantly boosted from 22.11% 24.20% /BTF14. Moreover, /BTF14 based devices also exhibit negligible hysteresis excellent long‐term stability, with over 77% their initial remaining after continuous operation 60 °C for 1000 h under 1 sun illumination.

Язык: Английский

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Spin‐Coated and Vacuum‐Processed Hole‐Extracting Self‐Assembled Multilayers with H‐Aggregation for High‐Performance Inverted Perovskite Solar Cells

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(45)

Опубликована: Июль 24, 2024

Abstract We report a highly crystalline self‐assembled multilayer (SAMUL) that is fundamentally different from the conventional monolayer or disordered bilayer used for hole‐extraction in inverted perovskite solar cells (PSCs). The SAMUL can be easily formed on ITO substrate to establish better surface coverage enhance performance and stability of PSCs. A detailed structure‐property‐performance relationship molecules established through systematic study their crystallinity, molecular packing, hole‐transporting properties. These SAMULs are rationally optimized by varying structures deposition methods thermal evaporation spin‐coating fabricating CbzNaphPPA‐based was chosen PSCs due it exhibiting highest crystallinity hole mobility which derived ordered H‐aggregation. This resulted remarkably high fill factor 86.45 %, enables very impressive power conversion efficiency (PCE) 26.07 % achieved along with excellent device (94 its initial PCE retained after continuous operation 1200 h under 1‐sun irradiation at maximum point 65 °C). Additionally, record‐high 23.50 could adopting thermally evaporated SAMUL. greatly simplifies broadens scope SAM large‐area devices diverse substrates.

Язык: Английский

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Rigid molecules anchoring on NiOx enable >26% efficiency perovskite solar cells

Joule, Год журнала: 2025, Номер unknown, С. 101815 - 101815

Опубликована: Янв. 1, 2025

Язык: Английский

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Perspective on Flexible Organic Solar Cells for Self-Powered Wearable Applications

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Янв. 15, 2025

The growing advancement of wearable technologies and sophisticated sensors has driven the need for environmentally friendly reliable energy sources with robust mechanical stability. Flexible organic solar cells (OSCs) have become promising substitutes traditional solutions thanks to their remarkable flexibility high power conversion efficiency (PCE). These unique properties allow flexible OSCs seamlessly integrate diverse devices substrates, making them an excellent choice powering various electronic by efficiently harvesting energy. This review summarizes recent achievements in from perspective self-powered applications. It discusses advancements materials, including substrates transparent electrodes, evaluates performance criteria, compares PCEs rigid counterparts. Subsequently, novel applications are explored. Finally, a summary perspectives on current challenges obstacles facing wearables provided, aiming inspire further research toward practical implementations.

Язык: Английский

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In Situ Formation of 2D Perovskite Seeding for Record‐Efficiency Indoor Perovskite Photovoltaic Devices

Advanced Materials, Год журнала: 2023, Номер 36(1)

Опубликована: Сен. 28, 2023

With 40% efficiency under room light intensity, perovskite solar cells (PSCs) will be promising power supplies for low-light applications, particularly Internet of Things (IoT) devices and indoor electronics, shall they become commercialized. Herein, β-alaninamide hydrochloride (AHC) is utilized to spontaneously form a layer 2D nucleation seeds improved film uniformity, crystallization quality, cell performance. It found that the AHC addition indeed improves quality as demonstrated by better lower trap density, smaller lattice stress, and, result, 10-fold increase in charge carrier lifetime. Consequently, not only does small-area (0.09 cm

Язык: Английский

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Stabilization of α‐phase FAPbI₃ via Buffering Interfacial Region for Efficient p–i–n Perovskite Solar Cells

Advanced Functional Materials, Год журнала: 2023, Номер 33(40)

Опубликована: Июнь 11, 2023

Abstract Formamidinium lead triiodide (FAPbI 3 ) with an ideal bandgap and good thermal stability has received wide attention achieved a record efficiency of 26% in n–i–p (regular) perovskite solar cells (PSCs). However, imperfect FAPbI formation on the typical hole transport layer (HTL), high interfacial trap‐state density, unfavorable energy alignment between HTL result inferior photovoltaic performance p–i–n (inverted) PSCs absorber. Herein, α ‐phase is stabilized by constructing buffer interface region NiO x , which not only diminishes /FAPbI reactions defects but also facilitates carrier transport. Upon construction region, inverted PSC exhibits high‐power conversion 23.56% (certified 22.58%) excellent stability, retaining 90.7% its initial after heating at 80 °C for 1000 h 84.6% operating maximum power point under continuous illumination 1100 h. Besides, as light‐emitting diode device, can be directly lit external quantum 1.36%. This study provides unique efficient strategy to advance application PSCs.

Язык: Английский

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Significance of Formamidinium Incorporation in Perovskite Composition and Its Impact on Solar Cell Efficiency: A Mini‐Review

Advanced Energy and Sustainability Research, Год журнала: 2024, Номер 5(8)

Опубликована: Апрель 26, 2024

Perovskite solar cells (PSCs) have gained tremendous research interest recently owing to several advantages, including low material cost, facile solution processability, bandgap tunability, and alluring device efficiency. The organic formamidinium (FA) cation‐based perovskites are mainly considered as one of the potential candidates for charge carrier generation due their excellent properties, such thermal stability than traditional perovskites. However, inevitable unfavorable polymorphism (i.e., α δ ) at room temperature still forms basis numerous works allow fabrication a high‐quality absorber enhances PSCs performance. studies resolve contemporary techniques (e.g., passivation strategy) with recent novel methods presented in this review form essence improvements PSCs. morphology also influences charge‐transfer behavior device's lifetime. Therefore, understanding these properties is essential improve quality avoid many defects. This focuses on structure pure mixed FA various halides, cation's role composition. And comprehensive overview double, triple, quadrupole results proper scientific explanations understand physics.

Язык: Английский

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