Dual functionality of charge extraction and interface passivation by self-assembled monolayers in perovskite solar cells

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(19), P. 6974 - 7016

Published: Jan. 1, 2024

This review overviews the challenges at buried interface of PSCs, defect passivation capabilities SAMs, and its effectiveness compared to other passivating agents.

Language: Английский

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Constructing Stable Perovskite with Small Molecule Bridge Interface Passivation

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 5, 2025

Abstract The interfaces of each layer in perovskite solar cells (PSCs) have a significant impact on the charge transfer and recombination. Especially, interface between hole transport (HTL) p‐i‐n type PSCs significantly affects contact characteristics HTL perovskite, hindering further improvements performance stability. Herein, small molecule 9‐Fluorenylmethoxycarbonyl chloride (9‐YT) is introduced as bridge for PSCs, which enhances interaction self‐assembly molecules (SAMs) perovskite. conjugated backbone 9‐YT can interact with SAM (MeO‐2PACz) by π–π stacking reaction. Moreover, also improves interfacial through strong interactions where carbonyl groups Cl atoms uncoordinated Pb 2+ layer. incorporation demonstrated to markedly enhance extraction at perovskite/hole interface, optimize energy level alignment, mitigate recombination, passivate defects Finally, device treated achieves power conversion efficiency (PCE) 24.82%. At same time, still maintain 92.6% original PCE after long‐term stability test 1200 h.

Language: Английский

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Interface Engineering with KI Modifier Enhances Performance of CsPbBr3 Perovskite Solar Cells

Materials Research Bulletin, Journal Year: 2025, Volume and Issue: 186, P. 113332 - 113332

Published: Feb. 6, 2025

Language: Английский

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F‐Free Fabrication Novel 2D Mo‐Based MBene Catalyst for Advanced Lithium–Sulfur Batteries

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 7, 2025

Abstract An efficient electrocatalytic medium is very important for lithium–sulfur (Li–S) batteries. Herein, as a novel MBene‐based material, 2D MoB employed to facilitate the catalytic conversion of lithium polysulfides (LiPSs). Instead HF etching technology previous MXene, accordion‐like MoB‐based MBene adopts hydrothermal‐assisted process. Its F‐free surface property prevents harm negative sulfur cathode from −F terminations. The high charge conductivity and abundant active sites promote adsorption‐transfer LiPSs on accelerate redox kinetics. Theoretical calculation, visual detection in situ Raman results show that stratified MoB‐coated separator inhibits “shuttle effect” soluble through coupling physical chemical mechanisms. Therefore, this work achieves commendable stability 847 mAh g −1 reversible capacity (2.0 C) 0.0651% attenuation rate per cycle (4.0 C). area 4.93 cm −2 still obtained under loading. More importantly, has uncovered great potential promising catalyst reaction species.

Language: Английский

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Minimizing Buried Interface Energy Losses with Post‐Assembled Chelating Molecular Bridges for High‐Performance and Stable Inverted Perovskite Solar Cells

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

Abstract Self‐assembled monolayers (SAMs) as hole‐collecting materials have made remarkable progress in inverted perovskite solar cells (PSCs). However, the incomplete coverage of SAMs and non‐intimate interface contact between perovskite/SAMs usually cause inferior characteristics significant energy losses at heterojunction interface. Herein, a post‐assembled chelating molecular bridge strategy using 5‐(9H‐carbazol‐9‐yl)isophthalicacid (CB‐PA) is developed to modify buried It found that CB‐PA can be chemically coupled with MeO‐2PACz through π–π stacking carbazole groups, chelate by forming double C═O···Pb bonds, thus constructing bridge‐connected promote carrier extraction. Simultaneously, fill voids form dense hybrid SAMs, resulting uniform surface potential improved contact. Moreover, treatment also tends induce oriented crystallization films, passivate defects, release lattice stress Consequently, CB‐PA‐based PSCs achieve champion efficiency 25.27% superior operational stability, retaining ≈94% their initial after maximum power point (MPP) tracking (65 °C) for 1000 h ISOS‐L‐2I protocol. This work provides an innovative address challenges high‐performance PSCs.

Language: Английский

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Biomaterial Improves the Stability of Perovskite Solar Cells by Passivating Defects and Inhibiting Ion Migration

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(24), P. 31218 - 31227

Published: June 6, 2024

With the rapid improvement of power conversion efficiency (PCE), perovskite solar cells (PSCs) have broad application prospects and their industrialization will be next step. Nevertheless, performance long-term stability devices are limited by defect-induced nonradiative recombination centers ions' migration inside films. Here, usnic acid (UA), an easy-to-obtain efficient natural biomaterial with a hydroxyl functional group (−OH) four carbonyl groups (−C═O) was added to MAPbI3 precursor regulate crystallization process slowing rate, thereby expanding crystal size preparing films low defect density. In addition, UA anchors uncoordinated Pb2+ suppresses I-ions, which enhances film. Consequently, impressive PCE exceeding 20% achieved for inverted structure MAPbI3-based PSCs. More impressively, optimized PSCs maintained 78% initial under air high humidity (RH ≈ 65%, 25–30 °C) 1000 h. can extracted from plant, usnea, making it inexpensive easy obtain. Our work demonstrates plant material in industrialization, is significant nowadays.

Language: Английский

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In situ Ligand‐Managed SnO₂ Electron Transport Layer for High‐Efficiency and Stable Perovskite Solar Cells

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 18, 2024

Abstract Tin oxide (SnO 2 ) with high conductivity and excellent photostability has been considered as one of the most promising materials for efficient electron transport layer (ETL) in perovskite solar cells (PSCs). Among them, SnO nanoparticles (NPs) dispersions have extensively utilized due to their facile film formation. However, inherent defects agglomeration issues NPs, well limited tunability instability post‐treatment process surface/interface engineering strategy, still hinder its further applications. Herein, a ligand‐management strategy implemented during situ synthesis NPs that can effectively achieve uniform modification is proposed. During grafting reaction between diethyl 2‐chloromalonate (DCMA) surface completed. Compared process, this intrinsic DCMA‐passivated (DCMA‐SnO reduces trap state density at interface ETL while enhancing chemical stability. Consequently, PSCs based on DCMA‐SnO champion PCE 25.39% small (active area 0.0655 cm 20.61% modules 23.25 ), demonstrating shelf‐life/light soaking stability (advanced level ISOS protocols). This exhibits significant application potential preparing high‐efficiency large‐area PSCs.

Language: Английский

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Using Post‐Treatment Additives for Crystal Modulation and Interface Passivation Enables the Fabrication of Efficient and Stable Perovskite Solar Cells in Air

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 6, 2024

Abstract High‐performance perovskite solar cells (PSCs) fabricated in ambient air are considered inevitable for low‐cost commercial manufacturing. However, passivating film defects and controlling the crystallization process critical achieving high performance PSCs. This study proposes using novel 2D material MBene green antisolvent to simultaneously modulate passivation of perovskites. facilitates uncoordinated Pb 2+ ions, thereby enhancing formation energy vacancies within adjusting level structure. Moreover, increases nucleation sites perovskite, significantly extending crystal growth improving crystallinity, reducing non‐radiative recombination. Consequently, champion devices treated with achieve a power conversion efficiency (PCE) 24.22% when air, exhibit superior humidity long‐term stability. Furthermore, PSCs added significant stability under various environmental conditions, including heat. The results lay foundation development materials photovoltaics, revealing their mechanism as new type perovskites, providing insights industrially producing efficient stable cells.

Language: Английский

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Efficient and Stable Perovskite Solar Cells via Multi-Functional Guanylurea Phosphate Zwitterionic Bridging Strategy

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 498, P. 155169 - 155169

Published: Aug. 24, 2024

Language: Английский

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Novel 2D Material of MBenes: Structures, Synthesis, Properties, and Applications in Energy Conversion and Storage

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 13, 2024

Abstract 2D transition metal borides (MBenes) have garnered significant attention from researchers due to their exceptional electrical conductivity, strong mechanical rigidity, excellent dynamic and thermodynamic stability, which stimulates the enthusiasm of for study MBenes. Over past few years, extensive research efforts been dedicated MBenes, resulting in a growing number synthesis methods being developed. However, there remains scarcity comprehensive reviews on particularly relation techniques employed. To address this gap, review aims provide summary latest findings An exhaustive exploration crystal structure types MBenes is presented, highlighting greater structural diversity compared MXenes. Furthermore, recent advancements methodologies provided. The also delves into physical chemical properties while elucidating applications realms energy conversion storage. Lastly, concludes by summarizing offering insights three angles: synthesis, structure‐property relationships, application prospects.

Language: Английский

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