Advanced Powder Materials, Год журнала: 2024, Номер unknown, С. 100264 - 100264
Опубликована: Дек. 1, 2024
Язык: Английский
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
Energy & Environmental Science, Год журнала: 2024, Номер 17(19), С. 7271 - 7280
Опубликована: Янв. 1, 2024
p–i–n inorganic PSCs with ytterbium cation surface treatment achieve an efficiency of 21.4% enhanced stability, benefiting from improved interfacial band energy alignment, reduced defects and iodide migration.
Язык: Английский
Процитировано
8
ACS Energy Letters, Год журнала: 2024, Номер 9(9), С. 4526 - 4533
Опубликована: Авг. 23, 2024
Surface passivation is one of the most promising strategies for improving illumination stability at high temperatures perovskite solar cells. However, commonly used surface agents should be presynthesized and were usually located or interfaces, making it challenging to suppress bulk defects simultaneously. Here, we present an approach in situ formation high-pKa cations ([N(Z)]-N-(Aminomethylene)guanidinium) eliminate charge interfacial sites Consequently, performance enhanced both n-i-p p-i-n structures, with highest reaching ∼25.4% 20.1% (64 cm2 aperture area). Additionally, treatment can applied extensive compositions, including triple cations, double single cation-based perovskites. The devices retain 94% their initial efficiency after 2000 h continuous light under maximum power point tracking (ISOS-L-1), representing best photostability among structured devices(>25%)reported date.
Язык: Английский
Процитировано
6
Nano Energy, Год журнала: 2024, Номер 128, С. 109870 - 109870
Опубликована: Июнь 12, 2024
Язык: Английский
Процитировано
5
Journal of Alloys and Compounds, Год журнала: 2025, Номер unknown, С. 179401 - 179401
Опубликована: Фев. 1, 2025
Язык: Английский
Процитировано
0
Journal of Semiconductors, Год журнала: 2025, Номер 46(5), С. 052804 - 052804
Опубликована: Май 1, 2025
Abstract Although perovskite solar cells (PSCs) demonstrate outstanding power conversion efficiency (PCE), their practical applications are still limited by stability issues caused various problems such as poor crystal quality triggered structural instability. Herein, to address the instability of perovskites, we introduced a polymer additive, poly-L-lysine hydrobromide (PLL), into precursor promote growth, thereby constructing stable structure. The results show that introduction PLL modulates colloidal aggregation state in solution, provides longer time for growth and successfully realizes formation large-sized films with high crystallinity. More importantly, owing its hydrophobic long-chain structure widespread distribution C=O NH on chain, firmly locks crystals, enhancing while blocking intrusion external factors water molecules, significantly enhances overall device. PLL-based PSC has negligible hysteresis PCE is improved from 22.20% 23.66%. PLL-modified devices excellent thermal environmental stability. These findings highlight promising additive optimizing crystallization, offering guidance fabricating efficient photovoltaic devices.
Язык: Английский
Процитировано
0
Advanced Energy Materials, Год журнала: 2024, Номер unknown
Опубликована: Дек. 11, 2024
Abstract Wide‐bandgap (WBG) perovskite solar cells (PSCs) are crucial component of tandem (TSCs). However, the main obstacles currently faced by WBG PSCs their imperfect crystal quality, leading to large open circuit voltage ( V OC ) losses and poor stability. The use 2,5‐dibromothieno[3,2‐B] thiophene (DBrT) as an additive in enhances mitigates defects, improves stability promoting growth passivating bulk interface defects. interaction between Pb─S bonds, π–π stacking, hydrogen bonding facilitates ordered molecular arrangement, better crystallization reduced non‐radiative recombination. Meanwhile, DBrT can also spontaneously diffuse grain boundary, thus permeate top buried surfaces perovskite, further defects at interfaces reducing This strategy not only energy level alignment carrier transport but achieves a champion power conversion efficiency (PCE) 22.40% for inverted PSC with high 1.27 V. PCE 20.39% semi‐transparent devices, 28.31% 4‐terminal all‐perovskite cells, thereby offering comprehensive approach enhancing performance perovskites.
Язык: Английский
Процитировано
2
The Journal of Physical Chemistry A, Год журнала: 2024, Номер unknown
Опубликована: Сен. 24, 2024
The investigation into the interfacial properties between fullerene compounds and Sn-based perovskites (Sn-PVSK) holds extraordinary significance for advancing efficient stable Pb-free perovskite solar cells. This study is first theoretical exploration to examine their using Ab initio molecular dynamics (AIMD) simulations trajectory analysis methods with C60@FASnI
Язык: Английский
Процитировано
1
Small, Год журнала: 2024, Номер unknown
Опубликована: Сен. 28, 2024
Abstract Void‐free perovskite films with oriented large grains are considered good performance. However, contradictory requirements on solvent volatilization arise that the growth of requires slow while residual problem, which leads to difficult‐handled voids at buried interface, quick and complete volatilization. Currently, although grain boundary additives help reach grains, occupation in channel may further deteriorate problem. Herein, porous structures “switchable pore” nature constructed based flexible hydrogen‐bonded (HOF‐FJU‐2) boundaries meet both achieving crystallization control restrain. The additive molecules prolongs through Pb‐O bond guides (100) facet its strong ordered accumulation trend. pre‐embedded structure opens up for annealing stage then switches a closed pore state via phase transformation after completely leaves, preventing intrusion external environment. Combined theoretical calculations situ spectrum tests, thermodynamics dynamics analyzed. As expected, target device exhibits enhanced performance (improved from 22.14% 24.18%) stability.
Язык: Английский
Процитировано
1
Advanced Energy Materials, Год журнала: 2024, Номер unknown
Опубликована: Ноя. 14, 2024
Abstract The synthesis of multicomponent metal halide perovskites (MHPs) by cationic and/or alloying allows band gap tuning, optimizing performance and improving stability. However, these materials often suffer from compositional, structural, property inhomogeneities, leading to uneven carrier transport significant non‐radiative recombination losses in lead perovskites. While many researchers have focused on the aggregation perovskite ions, impact surface potential has received relatively less attention. In this study, multifunctional ionic liquid 1‐allyl‐3‐methylimidazole dicyanamide (AMI) is introduced into precursor effectively regulate layer. This approach inhibits recombination, enhances injection, improves device performance. Surface homogenization within layer leads simultaneous improvements both efficiency stability solar cells. For wide‐bandgap (1.81 eV), optimal power conversion (PCE) reaches 20.44%, with an open‐circuit voltage ( V oc ) 1.339 V, a short‐circuit current density J sc 17.92 mA cm −2 , high fill factor (FF) 85%. strategy also proved effective for conventional bandgap cells (PSCs) (1.53 increase performance, PCE increasing 23.22% 25.41%.
Язык: Английский
Процитировано
1