Low-loss contacts on textured substrates for inverted perovskite solar cells

Nature, Journal Year: 2023, Volume and Issue: 624(7991), P. 289 - 294

Published: Oct. 23, 2023

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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Poly(carbazole phosphonic acid) as a versatile hole-transporting material for p-i-n perovskite solar cells and modules

Joule, Journal Year: 2023, Volume and Issue: 7(12), P. 2894 - 2904

Published: Nov. 10, 2023

Language: Английский

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peri-Fused polyaromatic molecular contacts for perovskite solar cells

Nature, Journal Year: 2024, Volume and Issue: 632(8024), P. 301 - 306

Published: July 24, 2024

Language: Английский

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Fully Aromatic Self‐Assembled Hole‐Selective Layer toward Efficient Inverted Wide‐Bandgap Perovskite Solar Cells with Ultraviolet Resistance

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 63(1)

Published: Nov. 21, 2023

Abstract Ultraviolet‐induced degradation has emerged as a critical stability concern impeding the widespread adoption of perovskite solar cells (PSCs), particularly in context phase‐unstable wide‐band gap films. This study introduces novel approach by employing fully aromatic carbazole‐based self‐assembled monolayer, denoted (4‐(3,6‐dimethoxy‐9H‐carbazol‐9‐yl)phenyl)phosphonic acid (MeO‐PhPACz), hole‐selective layer (HSL) inverted PSCs. Incorporating conjugated linker plays pivotal role promoting formation dense and highly ordered HSL on substrates, facilitating subsequent interfacial interactions, fostering growth uniform The high‐quality film could effectively suppress non‐radiative recombination, improving hole extraction/transport efficiency. Through these advancements, optimized PSCs, featuring band 1.68 eV, attain an impressive power conversion efficiency (PCE) 21.10 %. Remarkably, MeO‐PhPACz demonstrates inherent UV resistance heightened absorption capabilities, substantially for targeted characteristic holds significance feasibility large‐scale outdoor applications.

Language: Английский

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Self‐Assembled Monolayers of Bi‐Functionalized Porphyrins: A Novel Class of Hole‐Layer‐Coordinating Perovskites and Indium Tin Oxide in Inverted Solar Cells

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(40)

Published: Aug. 19, 2023

Self-assembled monolayers (SAMs) offer the advantage of facile interfacial modification, leading to significant improvements in device performance. In this study, we report design and synthesis a new series carboxylic acid-functionalized porphyrin derivatives, namely AC-1, AC-3, AC-5, present, for first time, strategy exploit large π-moiety porphyrins as backbone interfacing indium tin oxide (ITO) electrode perovskite active layer an inverted solar cell (PSC) configuration. The electron-rich nature facilitates hole transfer formation SAMs, resulting dense surface that minimizes defects. Comprehensive spectroscopic dynamic studies demonstrate double-anchored AC-3 AC-5 enhance SAMs on ITO, passivate layer, function conduits facilitate transfer, thus significantly boosting performance PSCs. champion PSC employing SAM achieves impressive efficiency 23.19 % with high fill factor 84.05 %. This work presents novel molecular engineering functionalizing tune energy levels, dipoles, packing orientations achieve stable efficient Importantly, our comprehensive investigation has unraveled associated mechanisms, offering valuable insights future advancements

Language: Английский

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Rational molecular design of multifunctional self-assembled monolayers for efficient hole selection and buried interface passivation in inverted perovskite solar cells

Chemical Science, Journal Year: 2024, Volume and Issue: 15(8), P. 2778 - 2785

Published: Jan. 1, 2024

Self-assembled monolayers (SAMs) have been widely employed as the bottom-contact hole-selective layer (HSL) in inverted perovskite solar cells (PSCs). Besides manipulating electrical properties, molecularly engineering SAM provides an opportunity to modulate buried interface. Here, we successfully introduced Lewis-basic oxygen and sulfur heteroatoms through rational molecular design of asymmetric SAMs obtain two novel multifunctional SAMs, CbzBF CbzBT. Detailed characterization single-crystal structures device interfaces shows that enhanced packing, more effective ITO work function adjustment, interface passivation were achieved. Consequently, champion PSC employing CbzBT showed excellent power conversion efficiency (PCE) 24.0% with a high fill factor 84.41% improved stability. This demonstrates feasibility introducing defect-passivating heterocyclic groups into molecules help passivate interfacial defects PSCs. The insights gained from this strategy will accelerate development new HSLs for efficient

Language: Английский

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Narrow Bandgap Metal Halide Perovskites for All-Perovskite Tandem Photovoltaics

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(7), P. 4079 - 4123

Published: March 25, 2024

All-perovskite tandem solar cells are attracting considerable interest in photovoltaics research, owing to their potential surpass the theoretical efficiency limit of single-junction cells, a cost-effective sustainable manner. Thanks bandgap-bowing effect, mixed tin-lead (Sn-Pb) perovskites possess close ideal narrow bandgap for constructing matched with wide-bandgap neat lead-based counterparts. The performance all-perovskite tandems, however, has yet reach its potential. One main obstacles that need be overcome is the─oftentimes─low quality Sn-Pb perovskite films, largely caused by facile oxidation Sn(II) Sn(IV), as well difficult-to-control film crystallization dynamics. Additional detrimental imperfections introduced thin film, particularly at vulnerable surfaces, including top and bottom interfaces grain boundaries. Due these issues, resultant device distinctly far lower than theoretically achievable maximum efficiency. Robust modifications improvements surfaces films therefore critical advancement field. This Review describes origins covers efforts made so toward reaching better understanding perovskites, particular respect surface improved stability cells. In addition, we also outline important issues integrating subcells achieving reliable efficient double- multi-junction tandems. Future work should focus on characterization visualization specific defects, tracking evolution under different external stimuli, guiding turn processing stable cell devices.

Language: Английский

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Defect‐Passivating and Stable Benzothiophene‐Based Self‐Assembled Monolayer for High‐Performance Inverted Perovskite Solar Cells

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(12)

Published: Jan. 12, 2024

Abstract Effective passivation of defects at the buried interface between perovskite absorber and hole‐selective layer (HSL) is crucial for achieving high performance in inverted solar cells (PSCs). Additionally, HSL needs to possess compact molecular packing intrinsic photo‐ thermo‐stability ensure long‐term operation devices. In this study, a novel MeO‐BTBT‐based self‐assembled monolayer (SAM) reported serve as an efficient PSCs. Compared well‐established carbazole‐containing SAM MeO‐2PACz, MeO‐BTBT has flat more extended conjugation with large atomic radius sulfur atom. These induce stronger intermolecular interactions enable ordered be formed on indium–tin oxide (ITO) substrates. Meanwhile, atoms can coordinate Pb 2+ ions passivate absorber. The derived films show both photoluminescence (PL) quantum yield (13.2%) long lifetime (7.2 µs). PSCs based PCE 24.53% impressive fill factor 85.3%. PCEs devices maintain ≈95% their initial values after being aged 65 °C than 1000 h or continuous under 1‐sun illumination.

Language: Английский

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Anchoring Charge Selective Self‐Assembled Monolayers for Tin–Lead Perovskite Solar Cells

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(18)

Published: Jan. 28, 2024

Abstract Self‐assembled monolayers (SAMs) have displayed great potential for improving efficiency and stability in p–i–n perovskite solar cells (PSCs). The anchoring of SAMs at the conductiv metal oxide substrates their interaction with materials must be rationally tailored to ensure efficient charge carrier extraction improved quality films. Herein, molecules different groups spacers control mixed Sn–Pb PSCs are selected. It is found that monolayer carboxylate group exhibits appropriate has a more favorable orientation arrangement than phosphate group. This results reduced nonradiative recombination enhanced crystallinity. In addition, short chain length leads an energy level alignment perovskite, hole extraction. As result, narrow bandgap (≈1.25 eV) show efficiencies up 23.1% open‐circuit voltage 0.89 V. Unencapsulated devices retain 93% initial after storage N 2 atmosphere over 2500 h. Overall, this work highlights underexplored photovoltaics provides essential findings on influence structural modification.

Language: Английский

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