Science China Materials, Год журнала: 2025, Номер unknown
Опубликована: Фев. 14, 2025
Язык: Английский
Advanced Materials, Год журнала: 2024, Номер 37(1)
Опубликована: Ноя. 17, 2024
Abstract Organic ammonium salts are extensively utilized for passivating surface defects in perovskite films to mitigate trap‐assisted nonradiative recombination. However, the influence of alkyl chain length on molecular orientation and spatial steric hindrance salt remains underexplored, hindering advancements more effective passivators. Here, a series organic is reported with varying lengths passivate optimize band alignment. It revealed that long chains promote parallel surface, thereby reinforcing interaction defects, whereas excessive introduces hindrance, weakening anion‐perovskite interactions. Nonylammonium acetate (NAAc) optimal achieves ideal balance between chemical interactions, resulting superior passivation. Through NAAc passivation, high‐performance inverted solar cells (PSCs) modules achieved, power conversion efficiencies (PCE) 25.79% (certified 25.12%) 19.62%, respectively. This marks record PCE PSCs utilizing vacuum flash technology ambient conditions. Additionally, NAAc‐passivated devices retain 91% their initial after 1200 h continuous maximum point operation. work offers new insights into interplay advancing design PSCs.
Язык: Английский
Процитировано
9
ACS Energy Letters, Год журнала: 2024, Номер unknown, С. 5924 - 5934
Опубликована: Ноя. 20, 2024
Buried-interface engineering is crucial to the performance of perovskite solar cells. Self-assembled monolayers and buffer layers at buried interface can optimize charge transfer reduce recombination losses. However, complex mechanisms difficulty in selecting suitable functional groups pose great challenges. Machine learning (ML) offers a powerful tool for screening identifying effective structures modification. Our ML-driven approach led preparation two promising organic molecules, PAPzO PAPz, which exhibit synergistic interactions with SnO2 perovskites. These molecules decrease trap densities, elongate carrier lifetimes, retard crystallization. PAPzO, stronger binding energy better aligned levels, enables power conversion efficiency (PCE) 26.04% long-term stability, maintaining 91.24% its original PCE after 1,200 h continuous maximum point tracking. This ML-integrated marks significant advancement development efficient stable photovoltaics.
Язык: Английский
Процитировано
8
Small, Год журнала: 2024, Номер unknown
Опубликована: Июнь 12, 2024
Abstract Pb‐related imperfections (surface or halide vacancy induced uncoordinated Pb 2+ , Pb‐I antisite, and defects) of the ionic crystal perovskite film seriously restrict photovoltaic performance solar cells (PSCs). Here, an aniline derivative N‐(4‐cyanophenyl)acetamide (CAL) is rationally designed, incorporating bilateral functional sites cyano acetyl groups, acting as Lewis base molecule for managing in surface through post‐treatment. Theoretical calculation experimental verification together proved reduced defect density, improved crystallinity, inhibited ion migration CAL‐modified perovskite. Precisely, a side group another can both coordinate with its low electrostatic potential energy. Further, core π‐π conjugate structure benzene ring ligand tend to form dimer improve mobility carrier transportation collection. The strategy demonstrates champion PCE 24.35% air‐processed PSCs over 1200 hours maximum power point tracking (MPPT) stability. This study presents comprehensive approach overcoming current limitations PSCs, paving way their integration into mainstream technologies.
Язык: Английский
Процитировано
7
Science China Materials, Год журнала: 2025, Номер unknown
Опубликована: Март 14, 2025
Язык: Английский
Процитировано
1
Applied Surface Science, Год журнала: 2024, Номер 662, С. 160139 - 160139
Опубликована: Апрель 21, 2024
Язык: Английский
Процитировано
6
ACS Nano, Год журнала: 2024, Номер 18(22), С. 14696 - 14707
Опубликована: Май 23, 2024
Surface defect passivation and carrier injection regulation have emerged as effective strategies for enhancing the performance of perovskite light-emitting diodes (Pero-LEDs). It usually requires two functional molecules to realize separately. In other words, developing one single molecule possessing these capabilities remains challenging. Herein, we utilized π-conjugated fluorene derivatives surface treatment materials, 9,9-Spirobi[fluorene] (SBF), 9,9-Spirobifluoren-2-yl-diphenylphosphine oxide (SPPO1), 2,7-bis(diphenylphosphoryl)-9,9'-spirobifluorene (SPPO13), investigate influence their chemical structure on device optoelectronic performance, especially regulation. Consequently, capability double-bonded SPPO13 surpassed single-bonded SPPO1 nonbonded SBF, which all showed excellent electron transport properties, injection. The maximum external quantum efficiencies (EQE) Pero-LEDs treated with SPPO1, were 8.13, 17.48, 22.10%, respectively, exceeding that derivative-free (6.55%). Notably, SPPO13-treated devices exhibited exceptional reproducibility, yielding an average EQE 20.00 ± 1.10% based 30 devices. This result emphasizes potential tailored Pero-LEDs.
Язык: Английский
Процитировано
6
Angewandte Chemie, Год журнала: 2024, Номер unknown
Опубликована: Окт. 15, 2024
Abstract The regulation of interfaces remains a critical and challenging aspect in the pursuit highly efficient stable perovskite solar cells (PSCs). Here, 2,2′‐bipyridyl‐4,4′‐dicarboxylic acid ( HBPDC ) is incorporated as an interfacial layer between SnO 2 layers PSCs. two carboxylic moieties on bind to through esterification, while its nitrogen atoms, possessing lone electron pairs, interact with uncoordinated lead (Pb 2+ atoms Lewis acid‐base interactions. This dual functionality enables simultaneous passivation surface defects both buried layers. In addition, electron‐deficient nature enhances energy band alignment facilitates transfer from . Furthermore, incorporation strengthens adhesion, improving mechanical reliability. As result, PSCs exhibited impressive power conversion efficiency (PCE) 25.41 % under standard AM 1.5G conditions, along remarkable environmental stability.
Язык: Английский
Процитировано
6
Advanced Functional Materials, Год журнала: 2024, Номер unknown
Опубликована: Ноя. 19, 2024
Abstract The commercialization of perovskite solar cells (PSCs), as an emerging industry, still faces competition from other renewable energy technologies in the market. It is essential to ensure that PSCs are durable and stable high‐temperature environments order meet varied market demands hot regions or seasons. influence high temperatures on complex, encompassing factors such lattice strain, crystal phase changes, creation defects, ion movement. Furthermore, it intensifies vibrations phonon scattering, which turn impacts migration rate charge carriers. This review focuses durability organic–inorganic hybrid under temperatures. begins by analyzing impact external temperature variations internal dynamics PSCs. Subsequently, outlines various mechanisms provided different functional molecules, applied interface stabilization, grain boundary passivation, growth control, electrode protection, development new hole transport layers, enhance thermal stability Additionally, machine learning (ML) discussed for predicting structure stability, operational material screening, with a focus potential deep explainable artifical intelligence (AI) techniques
Язык: Английский
Процитировано
5
Angewandte Chemie International Edition, Год журнала: 2024, Номер unknown
Опубликована: Окт. 15, 2024
Abstract The regulation of interfaces remains a critical and challenging aspect in the pursuit highly efficient stable perovskite solar cells (PSCs). Here, 2,2′‐bipyridyl‐4,4′‐dicarboxylic acid ( HBPDC ) is incorporated as an interfacial layer between SnO 2 layers PSCs. two carboxylic moieties on bind to through esterification, while its nitrogen atoms, possessing lone electron pairs, interact with uncoordinated lead (Pb 2+ atoms Lewis acid‐base interactions. This dual functionality enables simultaneous passivation surface defects both buried layers. In addition, electron‐deficient nature enhances energy band alignment facilitates transfer from . Furthermore, incorporation strengthens adhesion, improving mechanical reliability. As result, PSCs exhibited impressive power conversion efficiency (PCE) 25.41 % under standard AM 1.5G conditions, along remarkable environmental stability.
Язык: Английский
Процитировано
4
Small, Год журнала: 2024, Номер 20(48)
Опубликована: Сен. 20, 2024
Abstract The advent of organic–inorganic hybrid metal halide perovskites has revolutionized photovoltaics, with polycrystalline thin films reaching over 26% efficiency and single‐crystal perovskite solar cells (IC‐PSCs) demonstrating ≈24%. However, research on remains limited, leaving a crucial gap in optimizing energy conversion. Unlike films, which suffer from high defect densities instability, offer minimal defects, extended carrier lifetimes, longer diffusion lengths, making them ideal for high‐performance optoelectronics essential understanding material behavior. This review explores the advancements potential IC‐PSCs, focusing their superior efficiency, stability, role overcoming limitations counterparts. It covers device architecture, composition, preparation methodologies, recent breakthroughs, emphasizing importance further to propel IC‐PSCs toward commercial viability future dominance photovoltaic technology.
Язык: Английский
Процитировано
3