Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(16), P. 6003 - 6012
Published: Jan. 1, 2024
The trifluoroacetate pseudohalide anion, with dual functionalities, is introduced at the buried interface to promote orderly growth. This results in a power conversion efficiency of 25.60% and long-term stability under light exposure.
Language: Английский
Advanced Materials, Journal Year: 2023, Volume and Issue: 35(31)
Published: June 7, 2023
Due to their excellent thermal stability and ideal bandgap, metal halide inorganic perovskite based solar cells (PSCs) with inverted structure are considered as an choice for perovskite/silicon tandem cells. However, the power conversion efficiency (PCE) of still lags far behind that conventional n-i-p PSCs due interfacial energy level mismatch high nonradiative charge recombination. Herein, performance is significantly improved by engineering CsPbI3-x Brx films 2-mercapto-1-methylimidazole (MMI). It found mercapto group can preferably react undercoordinated Pb2+ from forming Pb-S bonds, which appreciably reduces surface trap density. Moreover, MMI modification results in a better alignment electron-transporting material, promoting carrier transfer reducing voltage deficit. The above combination open-circuit enhancement 120 mV, yielding champion PCE 20.6% 0.09 cm2 area 17.3% 1 area. Furthermore, ambient, operational heat stabilities also greatly improved. work demonstrates simple but effective approach fabricating highly efficient stable PSCs.
Language: Английский
Citations
85
Advanced Materials, Journal Year: 2023, Volume and Issue: 36(7)
Published: Oct. 7, 2023
The buried interface of the perovskite layer has a profound influence on its film morphology, defect formation, and aging resistance from outset, therefore, significantly affects quality device performance derived solar cells. Especially for FAPbI
Language: Английский
Citations
83
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(18)
Published: March 4, 2024
Abstract CsPbI 3 perovskite receives tremendous attention for photovoltaic applications due to its ideal band gap and good thermal stability. However, solar cells (PSCs) significantly suffer from photovoltage deficits because of serious interfacial energy losses within the PSCs, which a large extent affects performance PSCs. Herein, dipolar chemical bridge (DCB) is constructed between TiO 2 layers lower thus improve charge extraction The results reveal that DCB could form beneficial dipole layers, optimize energetics perovskite/TiO level alignment Meanwhile, also simultaneously passivate surface defects greatly lowering recombination. Consequently, deficit PSCs largely reduced, leading record efficiency 21.86 % being realized. operation stability improved high‐quality films with released tensile strain obtained after forming
Language: Английский
Citations
56
Advanced Materials, Journal Year: 2024, Volume and Issue: 36(16)
Published: Feb. 7, 2024
Abstract Buried interface optimization matters the efficiency improvement of planar perovskite solar cells (PSCs), and molecular bridge is reported to be an effective approach. Herein, a constructed at buried using 4‐chloro‐3‐sulfamoylbenzoic acid (CSBA), its preferred arrangement systematically investigated. It elucidated that CSBA prone orientationally absorbed on TiO 2 surface through COOH–Ti, then connect with S═O–Pb, resulting in feasible oriented bridge. Contributing passivated interfacial defects, optimized energy level, released tensile stress, from bridge, PSCs active area 0.08 cm achieve certified power conversion (PCE) 25.32%, highest among ‐based PSCs. Encouragingly, 1 champion PCE 24.20%, significantly promoting progress large‐area In addition, possess enhanced stability, unencapsulated can maintain ≈91% ≈85% their initial after 3000 h aging under ambient condition 1200 exposure UV irradiation.
Language: Английский
Citations
50
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
Citations
46
Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(44)
Published: Oct. 8, 2023
Abstract Despite remarkable progress in perovskite solar cells (PSCs), the unsatisfying stability strongly interrelated with defect density remains main obstacle for commercialization. Herein, a synergetic passivation method is judiciously designed that consists of precursor engineering strategy based on an ionic liquid 1‐butylsulfonate‐3‐methylimidazolium dihydrogen phosphate (BMDP), and two‐stage annealing (TSA) treatment to sufficiently passivate defects enhance performance further. It found multifunctional groups from BMDP have strong chemical interactions form chelated complexes components thus effectively passivating intrinsic defects. Synergized by sequential TSA treatment, formed hydrophobic can be precisely controlled filling along grain boundaries (GBs) surfaces, leading wrapping grains significant GBs. Consequently, both deep‐ shallow‐level bulk, at GBs surface are passivated, resulting champion efficiency 24.20%. Impressively, resultant unencapsulated films corresponding devices exhibit admirable maintaining 83.9% initial composition 4000 h aging moist air, 81.7% original structure after continuous heating 1600 h, 97% power conversion 1000 under illumination. This work provides efficient toward improved PSCs.
Language: Английский
Citations
45
Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(19), P. 7342 - 7354
Published: Jan. 1, 2024
Tetrafluorosuccinic acid was introduced into the buried interface to stabilize FA cations, mediate crystal growth of perovskite and reduce hole-transport barrier, delivering a record efficiency 25.92% for RbCsFAMA-based solar cells.
Language: Английский
Citations
25
Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(17), P. 6157 - 6203
Published: Jan. 1, 2024
HSSAMs with diverse structures, encompassing various anchoring and functional groups, were systematically categorized their multifaceted roles in inverted PSCs TSCs correlation device performance investigated.
Language: Английский
Citations
24
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(36)
Published: June 14, 2024
Abstract Inverted NiO x ‐based perovskite solar cells (PSCs) exhibit considerable potential because of their low‐temperature processing and outstanding excellent stability, while is challenged by the carriers transfer at buried interface owing to inherent low carrier mobility abundant surface defects that directly deteriorates overall device fill factor. Present work demonstrates a chemical linker with capability simultaneously grasping crystals forming Ni−S−Pb bridge significantly boost transfer, based on rationally selected molecule 1,3‐dimethyl‐benzoimidazol‐2‐thione (NCS). The constructed not only reduces pinholes needle‐like residual PbI 2 interface, but also deepens function valence band maximum positions , resulting in smaller VBM offset between film. Consequently, modulated PSCs achieved high factor up 86.24 %, which as far we know highest value records inverted PSCs. NCS custom‐tailored minimodules (active area 18 cm ) exhibited champion efficiency 25.05 % 21.16 respectively. unencapsulated devices remains over 90 initial power point under continuous illumination for 1700 hours.
Language: Английский
Citations
21
ACS Energy Letters, Journal Year: 2025, Volume and Issue: unknown, P. 703 - 712
Published: Jan. 8, 2025
To CsPbI3 perovskite solar cells, defects from buried interfaces and improper energy band alignment can cause severe carrier recombination hamper further enhancement in efficiency stability. In this work, we develop an situ strategy to reconstruct the interface for n-i-p typed cells. This is derived exchange reaction between 18C6/Cs+ Pb2+, leading formation of 18C6/Pb2+ crystallization process (18C6: 18-crown-6 ether). The as-prepared complex acts as a kind molecular barrier modify TiO2/perovskite passivate under-coordinated Pb2+ iodide vacancies. Additionally, free Br– ions diffuse into lattice film bottom, forming front-surface field suppress recombination. Based on strategy, high 22.14% has been achieved, demonstrating one highest efficiencies cells date. Besides, modified cell maintain 95% its initial after 1500 h MPP testing long-term stability testing, exhibiting excellent operational
Language: Английский
Citations
6