Stabilized hole-selective layer for high-performance inverted p-i-n perovskite solar cells

Science, Journal Year: 2023, Volume and Issue: 382(6668), P. 284 - 289

Published: Oct. 19, 2023

P-i-n geometry perovskite solar cells (PSCs) offer simplified fabrication, greater amenability to charge extraction layers, and low-temperature processing over n-i-p counterparts. Self-assembled monolayers (SAMs) can enhance the performance of p-i-n PSCs but ultrathin SAMs be thermally unstable. We report a robust hole-selective layer comprised nickel oxide (NiOx) nanoparticle film with surface-anchored (4-(3,11-dimethoxy-7H-dibenzo[c,g]carbazol-7-yl)butyl)phosphonic acid (MeO-4PADBC) SAM that improve stabilize NiOx/perovskite interface. The energetic alignment favorable contact binding between NiOx/MeO-4PADBC reduced voltage deficit various compositions led strong interface toughening effects under thermal stress. resulting 1.53-electron-volt devices achieved 25.6% certified power conversion efficiency maintained >90% their initial after continuously operating at 65 degrees Celsius for 1200 hours 1-sun illumination.

Language: Английский

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Reinforcing self-assembly of hole transport molecules for stable inverted perovskite solar cells

Science, Journal Year: 2024, Volume and Issue: 383(6688), P. 1236 - 1240

Published: March 14, 2024

Power conversion efficiencies (PCEs) of inverted perovskite solar cells (PSCs) have been improved by the use a self-assembled monolayer (SAM) hole transport layer. Long-term stability PSCs requires keeping SAM compact under layer during operation. We found that strong polar solvents in precursor desorb if it is anchored on substrates hydrogen-bonded, rather than covalently bonded, hydroxyl groups. used atomic-layer deposition to create an indium tin oxide substrate with fully covalent hydroxyl-covered surface for anchoring, as well trimethoxysilane group exhibited tridentate anchoring substrate. The resulting achieved PCEs 24.8 (certified 24.6) and 23.2% aperture areas 0.08 1.01 square centimeters, respectively. devices retained 98.9 98.2% initial PCE after 1000 hours damp-heat test operation maximum power point tracking at 85°C 1200 standard illumination,

Language: Английский

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Self-Assembled Monolayers for Interfacial Engineering in Solution-Processed Thin-Film Electronic Devices: Design, Fabrication, and Applications

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(5), P. 2138 - 2204

Published: Feb. 29, 2024

Interfacial engineering has long been a vital means of improving thin-film device performance, especially for organic electronics, perovskites, and hybrid devices. It greatly facilitates the fabrication performance solution-processed devices, including field effect transistors (OFETs), solar cells (OSCs), perovskite (PVSCs), light-emitting diodes (OLEDs). However, due to limitation traditional interfacial materials, further progress these devices is hampered particularly in terms stability, flexibility, sensitivity. The deadlock gradually broken through development self-assembled monolayers (SAMs), which possess distinct benefits transparency, diversity, sensitivity, selectivity, surface passivation ability. In this review, we first showed evolution SAMs, elucidating their working mechanisms structure–property relationships by assessing wide range SAM materials reported date. A comprehensive comparison various growth, fabrication, characterization methods was presented help readers interested applying works. Moreover, recent design applications mainstream electronic OFETs, OSCs, PVSCs OLEDs, summarized. Finally, an outlook prospects section summarizes major challenges SAMs used

Language: Английский

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Compact Hole‐Selective Self‐Assembled Monolayers Enabled by Disassembling Micelles in Solution for Efficient Perovskite Solar Cells

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(46)

Published: July 24, 2023

Self-assembled monolayers (SAMs) are widely employed as effective hole-selective layers (HSLs) in inverted perovskite solar cells (PSCs). However, most SAM molecules amphiphilic nature and tend to form micelles the commonly used alcoholic processing solvents. This introduces an extra energetic barrier disassemble during binding of on substrate surface, limiting formation a compact SAM. To alleviate this problem for achieving optimal growth, co-solvent strategy carbazole-based solution is developed. effectively increases critical micelle concentration be above enhances reactivity phosphonic acid anchoring group allow densely packed SAMs formed indium tin oxide. Consequently, PSCs derived from using MeO-2PACz, 2PACz, CbzNaph HSLs show universally improved performance, with SAM-derived device champion efficiency 24.98% stability.

Language: Английский

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Deciphering the Roles of MA-Based Volatile Additives for α-FAPbI₃ to Enable Efficient Inverted Perovskite Solar Cells

Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 145(10), P. 5920 - 5929

Published: March 6, 2023

Functional additives that can interact with the perovskite precursors to form intermediate phase have been proven essential in obtaining uniform and stable α-FAPbI3 films. Among them, Cl-based volatile are most prevalent literature. However, their exact role is still unclear, especially inverted solar cells (PSCs). In this work, we systematically studied functions of MA-based formamidinium lead iodide (FAPbI3)-based PSCs. Using situ photoluminescence, provide clear evidence unravel different roles (NH4Cl, FACl, MACl) (MACl, MABr, MAI) nucleation, crystallization, transition FAPbI3. Three kinds crystallization routes proposed based on above additives. The non-MA (NH4Cl FACl) were found promote lower phase-transition temperatures. could quickly induce MA-rich nuclei pure α-phase FAPbI3 dramatically reduce Furthermore, MACl provides a unique effect promoting growth secondary during annealing. optimized achieve an efficiency 23.1%, which highest FAPbI3-based

Language: Английский

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Rapid advances enabling high-performance inverted perovskite solar cells

Nature Reviews Materials, Journal Year: 2024, Volume and Issue: 9(6), P. 399 - 419

Published: May 17, 2024

Language: Английский

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Tripodal Triazatruxene Derivative as a Face-On Oriented Hole-Collecting Monolayer for Efficient and Stable Inverted Perovskite Solar Cells

Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 145(13), P. 7528 - 7539

Published: March 22, 2023

Hole-collecting monolayers have drawn attention in perovskite solar cell research due to their ease of processing, high performance, and good durability. Since molecules the hole-collecting monolayer are typically composed functionalized π-conjugated structures, hole extraction is expected be more efficient when π-cores oriented face-on with respect adjacent surfaces. However, strategies for reliably controlling molecular orientation remain elusive. In this work, multiple phosphonic acid anchoring groups were used control a series triazatruxene derivatives chemisorbed on transparent conducting oxide electrode surface. Using infrared reflection absorption spectroscopy metastable atom electron spectroscopy, we found that multipodal align surface, while monopodal counterpart adopts tilted configuration. The was facilitate extraction, leading inverted cells enhanced stability high-power conversion efficiencies up 23.0%.

Language: Английский

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Advantages and challenges of self-assembled monolayer as a hole-selective contact for perovskite solar cells

Materials Futures, Journal Year: 2023, Volume and Issue: 2(1), P. 012105 - 012105

Published: Feb. 13, 2023

Abstract Charge-transporting layers (CTLs) are important in determining the performance and stability of perovskite solar cells (PSCs). Recently, there has been considerable use self-assembled monolayers (SAMs) as charge-selective contacts, especially for hole-selective SAMs inverted PSCs well involving tandem cells. The SAM-based contact shows many advantages over traditional thin-film organic/inorganic CTLs, including reduced cost, low optical electric loss, conformal coating on a rough substrate, simple deposition large-area substrate easy modulation energy levels, molecular dipoles surface properties. incorporation various resulted high-efficiency single junction This topical review summarizes both challenges discusses potential direction future studies.

Language: Английский

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Optimizing Crystallization in Wide‐Bandgap Mixed Halide Perovskites for High‐Efficiency Solar Cells

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(17)

Published: Sept. 7, 2023

Wide-bandgap (WBG) perovskites have attracted considerable attention due to their adjustable bandgap properties, making them ideal candidates for top subcells in tandem solar cells (TSCs). However, WBG often face challenges such as inhomogeneous crystallization and severe nonradiative recombination loss, leading high open-circuit voltage (V

Language: Английский

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High Open‐Circuit Voltage (1.197 V) in Large‐Area (1 cm²) Inverted Perovskite Solar Cell via Interface Planarization and Highly Polar Self‐Assembled Monolayer

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(8)

Published: Jan. 2, 2024

Abstract The efficiency loss caused by area scaling is one of the key factors hindering industrial development perovskite solar cells. energy and contact issues in buried interface are main reasons. Here, a new self‐assembled monolayer (SAM), Ph‐4PACz, with large dipole moment (2.32 D) obtained . It found that Ph‐4PACz high polarity can improve band alignment minimize , resulting an open‐circuit voltage ( V oc ) as 1.2 for 1.55 eV perovskite. However, when applied to large‐area devices, fill factor (FF) still suffered from significant attenuation. Therefore, alumina nanoparticles (Al 2 O 3 ‐NPs) introduced between rough FTO substrate further flatness conformal film almost no voids interface, thus promoting low exciton binding energy, fast hot‐carrier extraction non‐radiative recombination. final devices achieved small‐area power conversion (PCE) 25.60% (1 cm PCE 24.61% (certified at 24.48%), which represents highest single device ≥ 1 area. Additionally, mini‐modules stability testing also carried out demonstrate feasibility commercialization.

Language: Английский

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