Nano-Micro Letters, Год журнала: 2024, Номер 16(1)
Опубликована: Апрель 24, 2024
This study presents experimental evidence of the dependence non-radiative recombination processes on electron-phonon coupling perovskite in solar cells (PSCs). Via A-site cation engineering, a weaker has been achieved by introducing structurally soft cyclohexane methylamine (CMA
Язык: Английский
Advanced Energy Materials, Год журнала: 2024, Номер 14(8)
Опубликована: Янв. 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.
Язык: Английский
Процитировано
82
Advanced Electronic Materials, Год журнала: 2024, Номер 10(5)
Опубликована: Март 5, 2024
Abstract In the backdrop of today's environmental priorities, where toxicity and stability hinder lead‐based perovskite solar cell (PSC) progress, emergence lead‐free alternatives like Cs 2 AgBiBr 6 perovskites has gained significance. This study revolves around comprehensive evaluation as a potential photovoltaic (PV) material, using density functional theory (DFT) calculations with CASTEP. Revealing vital bandgap 1.654 eV emphasizing contributions Ag‐4 d Br‐4 p orbitals, this analysis also underscores Ag atoms' dominance in charge distribution. Optically, exhibits UV absorption peaks 15 eV, intensifying photon energy up to 3.75 hinting at its promise for applications. Guided by DFT, forty configurations involving various electron transport layers (ETLs) hole (HTLs) are explored. Among these, CNTS emerges prime HTL due ideal absorber alignment. The spotlight architecture, FTO/AZnO/Cs /CNTS/Au, boasts exceptional efficiency (23.5%), V oc (1.38 V), J sc (21.38 mA cm −2 ), FF (79.9%). contrast, FTO/CdZnS/Cs /CNTS/Au achieves slightly lower 23.15% efficiency. Real‐world intricacies probed, encompassing resistances, temperature, current–voltage ( – ) traits, quantum (QE), enhancing practical relevance. These findings thoughtfully contextualized within prior literature, showcasing study's non‐toxic, inorganic technology. work aspires positively steer sustainable PV advancement.
Язык: Английский
Процитировано
76
Advanced Energy Materials, Год журнала: 2024, Номер unknown
Опубликована: Июнь 18, 2024
Abstract Inverted perovskite solar cells (PSCs) comprising formamidinium‐cesium (FA‐Cs) lead triiodide have garnered considerable attention due to their impressive efficiency and remarkable stability. Nevertheless, synthesizing high‐quality FA‐Cs alloyed films presents challenges, primarily attributable the intricate interphase process involved absence of methylammonium (MA + ) mixed halogens. Here, additive 3‐phosphonopropanoic acid (3‐PPA) is introduced, with bifunctional phosphonic groups, into precursor modulate crystal growth provide passivation at grain boundaries. In situ characterization reveals that 3‐PPA can form a “rapid nucleation, slow growth” mechanism, resulting in enlarged grains enhanced crystallinity. addition, serves passivate boundary defects release residual strain by forming molecular bridging, leading passivated achieving fluorescence lifetime 5.79 microseconds favorable n‐type contact interface. As result, devices incorporating achieve champion power conversion (PCE) 24.05% an ultra‐high fill factor (FF) 84.22%. More importantly, optimized exhibit satisfactory stability under various testing conditions. The findings underscore pivotal role multifunctional additives crystallization control defect for high‐performance MA‐free pure iodine PSCs.
Язык: Английский
Процитировано
54
Advanced Functional Materials, Год журнала: 2024, Номер 34(25)
Опубликована: Фев. 7, 2024
Abstract Inverted perovskite solar cells (IPSCs) have attracted unprecedented attention due to their negligible hysteresis, long‐term operational stability, low temperature, and cost‐effective fabrication process, as well wide applications. The power conversion efficiency (PCE) of IPSCs has skyrocketed from 3.9% in 2013 certified 26.1% 2023, which is over the 25.8% regular counterpart, benefiting emergence a great number organic hole‐transporting materials (HTM). This review provides an overview recent development stability IPSCs, including small molecules conjugated conductive polymers. effective strategies for charge‐transport layer films are also discussed. Finally, prospective further outlined, developing novel fabricating techniques meet requirements commercial application.
Язык: Английский
Процитировано
46
Advanced Materials, Год журнала: 2024, Номер 36(23)
Опубликована: Фев. 16, 2024
Inverted inorganic perovskite solar cells (PSCs) is potential as the top in tandem configurations, owing to ideal bandgap, good thermal and light stability of perovskites. However, challenges such mismatch energy levels between charge transport layer perovskite, significant non-radiative recombination caused by surface defects, poor water have led urgent need for further improvement performance inverted PSCs. Herein, fabrication efficient stable CsPbI
Язык: Английский
Процитировано
39
Advanced Energy Materials, Год журнала: 2024, Номер 14(20)
Опубликована: Март 8, 2024
Abstract In a methylammonium‐free (MA‐free) composition, the uncontrollable crystallization process between Cs and formamidine (FA) currently hinders its efficiency enhancement, especially in inverted perovskite solar cells (PSCs). Here, dual‐interface modification of films is proposed by simultaneously introducing additives surface passivators. particular, (aminomethyl)phosphonic acid (AMP) introduced into precursor solution to balance inducing preferential FA through specific formation strong hydrogen bonds with FA. addition, AMP spontaneously sinks anchors buried interface fill voids self‐assembled monolayer (SAM) via covalent formed ─PO 3 H 2 FTO. Subsequently, sequential 2‐(3‐fluorophenyl)ethylamine iodide (mF‐PEAI) piperazine diiodide (PDI), uniform potential achieved recombination losses at are minimized. Notably, dual‐interface‐modified MA‐free PSCs achieve state‐of‐the‐art power conversion (PCE) 25.35% (certified: 24.87%) satisfactory V oc 1.17 based on bandgap 1.52 eV. Importantly, unencapsulated devices maintain 92.8% 91.7% initial after 1000 h maximum output (MPP) tracking >800 heating 85 °C, respectively, confirming excellent operational thermal stability.
Язык: Английский
Процитировано
33
Nature Communications, Год журнала: 2024, Номер 15(1)
Опубликована: Окт. 23, 2024
Fullerene derivatives are extensively employed in inverted perovskite solar cells due to their excellent electron extraction capabilities. However, [6,6]-phenyl-C
Язык: Английский
Процитировано
25
Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(30)
Опубликована: Май 11, 2024
Abstract It is a crucial role for enhancing the power conversion efficiency (PCE) of perovskite solar cells (PSCs) to prepare high‐quality films, which can be achieved by delaying crystallization film. Hence, we designed difluoroacetic anhydride (DFA) as an additive regulating process thus reducing defect formation during film formation. was found DFA reacts with DMSO forming two molecules, difluoroacetate thioether ester (DTE) and acid (DA). The strong bonding DTE ⋅ PbI 2 DA retard formation, monitored through in situ UV/Vis PL tests. By using additives, prepared films low defects. Finally, champion PCE 25.28 % excellent environmental stability, retained 95.75 initial after 1152 h at 25 °C under RH.
Язык: Английский
Процитировано
22
Journal of Power Sources, Год журнала: 2024, Номер 595, С. 234066 - 234066
Опубликована: Янв. 21, 2024
Язык: Английский
Процитировано
20
ACS Energy Letters, Год журнала: 2024, Номер 9(6), С. 2790 - 2799
Опубликована: Май 17, 2024
The stability of perovskite solar cells (PSCs) has been considered as one the major obstacles toward practical application. Defects in layer and ion infiltration from hole transport (HTL) can trigger degradation n-i-p PSCs. Herein, phenylhydrazine-4-sulfonic acid (PHPA) was employed an additive to modulate crystallization during film formation, enlarging crystal grain sizes ∼3 μm. Density functional theory (DFT) calculations revealed that PHPA could effectively inhibit formation iodine vacancies (VI) passivate under-coordinated Pb2+ ions. Additionally, perfluorooctanoic (PFOA) adopted surface located dangling defects, improve hydrophobicity, Li+ migration HTL bottom perovskite, thus enhancing device's environmental operational stability. Consequently, resulting devices delivered a champion efficiency 25.1% with excellent maximum-power-point (MPP) tracking
Язык: Английский
Процитировано
20