Dimensional Regulation from 1D/3D to 2D/3D of Perovskite Interfaces for Stable Inverted Perovskite Solar Cells

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(11), P. 7555 - 7564

Published: March 8, 2024

Constructing low-dimensional/three-dimensional (LD/3D) perovskite solar cells can improve efficiency and stability. However, the design selection of LD capping materials are incredibly scarce for inverted (PSCs) because layers often favor hole extraction impede electron extraction. Here, we develop a facile effective strategy to modify surface by passivating defects modulating electrical properties incorporating morpholine hydriodide (MORI) thiomorpholine (SMORI) on surface. Compared with PI treatment that previously developed, one-dimensional (1D) layer derived from is transformed into two-dimensional (2D) (with MORI or SMORI), achieving dimension regulation. It shown 2D SMORI induces more robust passivation stronger n–N homotype 2D/3D heterojunctions, p–i–n cell an 24.55%, which retains 87.6% its initial after 1500 h operation at maximum power point (MPP). Furthermore, 5 × cm2 mini-modules presented, active-area 22.28%. In addition, quantum well structure in increases moisture resistance, suppresses ion migration, improves PSCs' structural environmental

Language: Английский

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The Promise and Challenges of Inverted Perovskite Solar Cells

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(19), P. 10623 - 10700

Published: Aug. 29, 2024

Recently, there has been an extensive focus on inverted perovskite solar cells (PSCs) with a p-i-n architecture due to their attractive advantages, such as exceptional stability, high efficiency, low cost, low-temperature processing, and compatibility tandem architectures, leading surge in development. Single-junction perovskite-silicon (TSCs) have achieved certified PCEs of 26.15% 33.9% respectively, showing great promise for commercial applications. To expedite real-world applications, it is crucial investigate the key challenges further performance enhancement. We first introduce representative methods, composition engineering, additive solvent processing innovation charge transporting layers, interface fabricating high-efficiency stable PSCs. then delve into reasons behind excellent stability Subsequently, we review recent advances TSCs PSCs, including perovskite-Si TSCs, all-perovskite perovskite-organic TSCs. achieve final deployment, present efforts related scaling up, harvesting indoor light, economic assessment, reducing environmental impacts. Lastly, discuss potential PSCs future.

Language: Английский

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Multifunctional Trifluoroborate Additive for Simultaneous Carrier Dynamics Governance and Defects Passivation to Boost Efficiency and Stability of Inverted Perovskite Solar Cells

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(14)

Published: Feb. 10, 2024

Abstract The main obstacles to promoting the commercialization of perovskite solar cells (PSCs) include their record power conversion efficiency (PCE), which still remains below Shockley–Queisser limit, and poor long‐term stability, attributable crystallographic defects in films open‐circuit voltage ( V oc ) loss devices. In this study, potassium (4‐tert‐butoxycarbonylpiperazin‐1‐yl) methyl trifluoroborate (PTFBK) was employed as a multifunctional additive target modulate bulk carrier dynamics PSCs. Apart from simultaneously passivating anionic cationic defects, PTFBK could also optimize energy‐level alignment devices weaken interaction between carriers longitudinal optical phonons, resulting lifetime greater than 3 μs. Furthermore, it inhibited non‐radiative recombination improved crystallization capacity film. Hence, rigid flexible p‐i‐n PSCs yielded champion PCEs 24.99 % 23.48 %, respectively. More importantly, due hydrogen bonding formamidinium fluorine, exhibited remarkable thermal, humidity, operational tracking at maximum point stabilities. reduced Young's modulus residual stress layer provided excellent bending stability for

Language: Английский

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Interface Dipole Management of D–A‐Type Molecules for Efficient Perovskite Solar Cells

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(30)

Published: May 7, 2024

Abstract Interfacial engineering of perovskite films has been the main strategies in improving efficiency and stability solar cells (PSCs). In this study, three new donor‐acceptor (D–A)‐type interfacial dipole (DAID) molecules with hole‐transporting different anchoring units are designed employed PSCs. The formation interface dipoles by DAID on film can efficiently modulate energy level alignment, improve charge extraction, reduce non‐radiative recombination. Among molecules, TPA‐BAM amide group exhibits best chemical optoelectrical properties, achieving a champion PCE 25.29 % enhanced open‐circuit voltage 1.174 V fill factor 84.34 %, due to reduced defect density improved hole extraction. Meanwhile, operational unencapsulated device significantly improved. Our study provides prospect for rationalized screening materials efficient stable

Language: Английский

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Two-Dimensional Materials for Highly Efficient and Stable Perovskite Solar Cells

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: May 23, 2024

Perovskite solar cells (PSCs) offer low costs and high power conversion efficiency. However, the lack of long-term stability, primarily stemming from interfacial defects susceptible metal electrodes, hinders their practical application. In past few years, two-dimensional (2D) materials (e.g., graphene its derivatives, transitional dichalcogenides, MXenes, black phosphorus) have been identified as a promising solution to solving these problems because dangling bond-free surfaces, layer-dependent electronic band structures, tunable functional groups, inherent compactness. Here, recent progress 2D material toward efficient stable PSCs is summarized, including role both interface electrodes. We discuss beneficial effects on perovskite growth, energy level alignment, defect passivation, well blocking external stimulus. particular, unique properties form van der Waals heterojunction at bottom are emphasized. Finally, perspectives further development using provided, such designing high-quality heterojunction, enhancing uniformity coverage nanosheets, developing new materials-based

Language: Английский

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Defects and Defect Passivation in Perovskite Solar Cells

Molecules, Journal Year: 2024, Volume and Issue: 29(9), P. 2104 - 2104

Published: May 2, 2024

Perovskite solar cells have made significant strides in recent years. However, there are still challenges terms of photoelectric conversion efficiency and long-term stability associated with perovskite cells. The presence defects materials is one the important influencing factors leading to subpar film quality. Adopting additives passivate within an effective approach. Therefore, we first discuss types that occur mechanisms their effect on performance. Then, several used discussed, including ionic compounds, organic molecules, polymers, etc. This review provides guidance for future development more sustainable improve performance

Language: Английский

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Heterointerface Energetics Regulation Strategy Enabled Efficient Perovskite Solar Cells

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(13)

Published: Jan. 10, 2024

Abstract In the domain of perovskite photovoltaics, heterointerfaces are subject to substantial trap‐assisted non‐radiative recombination, predominantly attributed energy offset, interface defects, and roughness contact. This phenomenon at heterointerfaces, where carrier recombination dissipation occur due defects suboptimal level alignment, can be principally held accountable for V oc losses. Herein, a heterointerface energetics regulation (HER) strategy is proposed by introducing potassium trifluoroacetate (KTFA) in precursor solution eliminate trap optimize surface potential Fermi level. It first demonstrated that non‐doping K + but precipitating upper buried will improve energy‐level alignment charge extraction dynamics. addition, TFA − exhibits strong electrostatic force with undercoordinated Pb 2+ contact Sn 4+ SnO 2 electron transporting layer. Based on vacuum flash evaporation green treatment without anti‐solvent, Rb 0.02 (Cs 0.05 FA 0.95 ) 0.98 PbI 0.91 Br 0.03 Cl 0.06 Cs 3 based device achieve maximum efficiency 23.36% 24.48%, respectively. Further, modified devices exhibit 92% initial output after 1200 h aging. HER addressing bandgap poised advance both performance stability solar cells.

Language: Английский

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Single-Crystal-Assisted In Situ Phase Reconstruction Enables Efficient and Stable 2D/3D Perovskite Solar Cells

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(2), P. 1657 - 1666

Published: Jan. 4, 2024

Perovskite solar cells (PSCs) that incorporate both two-dimensional (2D) and three-dimensional (3D) phases possess the potential to combine high stability of 2D PSCs with superior efficiency 3D PSCs. Here, we demonstrated in situ phase reconstruction 2D/3D perovskites using a perovskite single-crystal-assisted method. A gradient distribution RP was formed after spin-coating solution Ruddlesden–Popper (RP) single crystal, (DFP)2PbI4, onto surface, followed by thermal annealing. The resulting film exhibits much reduced trap density, increased carrier mobility, water resistance. As result, optimized achieved champion 24.87% open-circuit voltage (VOC) 1.185 V. This performance surpasses control device, which an 22.43% VOC 1.129 Importantly, unencapsulated device demonstrates significantly enhanced operational stability, preserving over 97% its original continuous light irradiation for 1500 h. Moreover, extrapolated T80 lifetimes surpass 5700 These findings pave way rational regulation at interface between employing crystals achieve stable efficient

Language: Английский

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Synergistic Effects of Energy Level Alignment and Trap Passivation via 3,4-Dihydroxyphenethylamine Hydrochloride for Efficient and Air-Stable Perovskite Solar Cells

ACS Applied Energy Materials, Journal Year: 2024, Volume and Issue: 7(3), P. 1358 - 1368

Published: Feb. 1, 2024

Grain boundaries and surface defect states in perovskite films damage the charge transport mechanism by acting as nonradiative recombination centers, thus resulting poor device performance unsatisfactory long-term stability. For this aim, we added 3,4-dihydroxyphenethylamine hydrochloride (3,4-DpACl) an effective additive to chlorobenzene antisolvent used it during fabrication. The characterization results infer that 3,4-DpACl material not only assists forming a smoother film along with reduction of residual lead iodide but also brings passivation effect from possible chemical interaction between C═O 3,4-DpACI molecules uncoordinated Pb2+ ions material. In addition, employing tailors energy levels layer reduces mismatch valence band hole (HTL). Overall, 3,4-DpACl-contained records champion efficiency 21.17% for optimized solar cells (PSCs). triple-cation PSCs show higher stability against humidity irradiance. They maintain 83% their original power conversion (PCE) after 1600 h exposure ambient air level 35–40%. Furthermore, 1056 irradiance simulated sunlight environment, they retain 81.6% initial PCE.

Language: Английский

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Towards the 10‐Year Milestone of Monolithic Perovskite/Silicon Tandem Solar Cells

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(37)

Published: July 25, 2024

Abstract The perovskite/silicon tandem solar cell represents one of the most promising avenues for exceeding Shockley–Queisser limit single‐junction cells at a reasonable cost. Remarkably, its efficiency has rapidly increased from 13.7% in 2015 to 34.6% 2024. Despite significant research efforts dedicated this topic, “secret” achieving high‐performance seems be confined few groups. Additionally, discrepancies preparation and characterization between continue impede transition efficient cells. This review first revisits key milestones development monolithic over past decade. Then, comprehensive analysis background, advancements, challenges is provided, following sequence fabrication process. progress limitations prevalent stability measurements devices are also discussed. Finally, roadmap designing efficient, scalable, stable outlined. takes growth history into consideration while charting future course research.

Language: Английский

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