CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Junjie Tong,Chen Dong,Victor Marrugat Arnal,Miaosen Yao,Qichao Wang,Yuhao Song,Yingying Deng,Yueyue Gao,Gentian Yue,Weifeng Zhang,Makhsud I. Saidaminov,Furui Tan
P3HT is a promising hole-transport layer (HTL) for efficient and stable carbon electrode-based perovskite solar cells (C-PSCs). However, the reported low efficiencies of P3HT C-PSCs, resulting from the unmatched band alignment and electronically poor contact between perovskite and P3HT, is an obstacle. In this work, we propose a binary HTL system that incorporates PTAA into P3HT to address this issue, thereby achieving efficiencies of 21.3 % (0.04 cm 2 ) and 18.8 % (1.0 cm 2 ) under AM 1.5G illumination, and 35.2 % under indoor illumination of 1000 lx, all of which are the highest reported values for low-temperature printable C-PSCs. Experimental and theoretical results revealed that the performance improvements mainly stem from the following collaborative effects between P3HT and PTAA: 1) the introduction of PTAA increases more face-on orientations of P3HT as well as enhanced π–π stacking, forming more effective charge transport channels as molecular bridges; 2) the hole extraction barrier from perovskite to P3HT is reduced by 0.07 eV through incorporating PTAA; 3) triarylamine PTAA and other more face-on configurations can provide additional and stronger passivation sites, intensifying the defect passivation effects. Finally, unencapsulated P3HT-PTAA C-PSCs maintain ≈91 % of initial performance after maximum power point tracking for over 900 h.
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ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Ang Gao,Yong Li,Yinjing He,Can Zheng,Lidan Liu,Zhike Liu,Dapeng Wang,Shengzhong Frank Liu
The quality of organic–inorganic hybrid perovskite films directly affects the application prospect of perovskite solar cells (PSCs), where organic and inorganic cations are the core elements that affect the quality of the perovskite. The additive strategy has been widely used to passivate cation-related defects in perovskite films. Here, the perovskite precursor solution introduced 5-bromopyridine-3-sulfonic acid (BOH) with a potential all-cation passivation function. The experimental results verified that the N atom on pyridine in the BOH molecular structure passivated the defects in perovskite by binding with undercoordination Pb2+, and the sulfonic acid group inhibited nonradiative recombination through their interactions with FA+ and Pb2+, improving perovskite grain size and crystallinity, and enhancing film quality. Thanks to the all-cationic targeted anchoring effect of BOH, the efficiency of the BOH-treated device upgraded from 22.32 to 24.33%. Importantly, PSCs with BOH showed excellent stability after exposure to 25% humidity for 1200 h at room temperature.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yongsheng Jia,Donghang Chen,Yan Li,Enze Li,Long Zhao,Limin Guo
In this study, CO 2 was converted to activated carbon by the molten salt CO 2 capture and electrochemical conversion (MSCC-EC) method, and the surface oxygen content of the activated carbon was further modified for the adsorption of polar molecules (chlorobenzene) and nonpolar molecules (toluene), the role of the pore structure and surface O-containing functional groups of the adsorbents in contributing to the adsorption process was systematically investigated. The results showed that MS-AC 500-10 , MS-AC 500-15 , and MS-AC 550-15 have rich pore structures with specific surface areas of 811.56 m 2 /g, 835.35 m 2 /g, 1249.104 m 2 /g, and surface oxygen contents of about 10 %, 15 %, 15 %, respectively. The toluene adsorption capacity of MS-AC 500-10 , MS-AC 500-15 , and MS-AC 550-15 was 203.82 mg/g, 229.72 mg/g, and 358.97 mg/g, respectively, and was dominated by pore adsorption, which was positively proportional to the specific surface areas and pore volumes, the adsorption process belonged to the pseudo-first-order kinetic model. The adsorption amounts of chlorobenzene by MS-AC 500-10 , MS-AC 500-15 , and MS-AC 550-15 were 287.98 mg/g, 363.11 mg/g, and 495.41 mg/g, respectively. In addition to the pore adsorption, the oxygen content on the surface of the adsorbents had a non-negligible promotion effect on the adsorption of chlorobenzene, mainly because chlorobenzene is a polar molecule, and the asymmetric electrons on its surface have strong interactions with the O-containing functional groups on the surface of the adsorbents. Moreover, the prepared adsorbents were thermally stable, and the decay rate of adsorption performance was less than 5 % after five adsorption–desorption cycles.
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APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2025
·Vol. 131
·期 10
·1-11
·
IF 2.8
Kuang Xuanfei,Xiao Yao,Qian Kun,Han Muyun,Liang Zongcun,Fu Wuyou
Perovskite solar cells (PSCs) have developed rapidly, however, the high cost of materials, inadequate device stability, and stringent manufacturing conditions still hinder their large-scale commercialization. In this study, we demonstrate that polyethylene glycol (PEG) modification of the hole transport layer enhances the efficiency (with power conversion efficiency (PCE) increasing from 8.41 to 9.01%) and stability. After continuous illumination for 16 days under unencapsulated conditions, the device maintains 89% of its initial efficiency. The incorporation of PEG reduces defects in the hole transport layer, decreases the non-radiative recombination rate of charge carriers, and minimizes the damage caused by moisture to the perovskite light-absorbing layer, thereby improving the overall performance of the PSCs. The materials used are inexpensive and easy to fabricate, and the entire process is conducted in an ambient atmosphere.
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Advanced Energy Materials
·
2025
·
IF 26
Shengxiang Kang,Jiyao Zhang,Haojie Liang,Jiaming Huang,Zhiwei Ren,Teng He,Xiaohui Liu,Jing Zhang,Yuejin Zhu,Kuan Liu,Gang Li,Like Huang
Perovskite solar cells (PSCs) face challenges in long-term stability, especially under reverse bias. Here, a water-soluble vanadium pentoxide (V 2 O 5-x ) hole-collecting layer (HCL) is introduced into inverted PSCs to improve the photovoltaic performance and multiple-scenario stability under operational, thermal recycle, and reverse bias. V 2 O 5-x annealed at 50–250°C are characterized for multiple physical properties, revealing that 150°C annealing optimizes oxygen vacancy to reduce trap density and improve interface carrier collection. The champion device based on (FA 0.83 MA 0.17 ) 0.95 Cs 0.05 Pb(I 0.95 Br 0.05 ) 3 absorber achieves power conversion efficiency (PCE) of 23.3% with negligible hysteresis (HI = 0.64%) and good stability (retains ∼88% of initial PCE after 1000 h of storage). Further, with Cs 0.05 MA 0.1 FA 0.85 PbI 3 as absorber, the PCE of the device can be further improved to be 25.88% with an HI of 3.26%, superior to the device without V 2 O 5-x (PCE = 24.94%, HI = 5.47%). Moreover, the operational and thermal cycling stability of the device has been obviously improved. Crucially, V 2 O 5-x enhances the reverse breakdown voltage from about |−2| to |−6| V, endowing the device with higher reverse bias stability and tolerance to the shadow effect. These results demonstrate that V 2 O 5-x can simultaneously boost PCE and stability of PSCs, offering a promising route toward efficient and durable PSCs.
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Light-Science & Applications
·
2025
·Vol. 14
·期 1
·1-9
·
IF 23.4
Yang Jiaxing,Zhang Liyu,Wang Kai,Zhang Chen,Fan Aoyu,He Zijian,Li Zhidi,Han Xiaobo,Ling Furi,Lu Peixiang
The strong coupling between photons and phonons in polar materials gives rise to phonon-polaritons that encapsulate a wealth of physical information, offering crucial tools for the ultrafast terahertz sources and the topological engineering of terahertz light. However, it is still quite challenging to form and manipulate the terahertz phonon-polaritons under the ultrastrong coupling regime till now. In this work, we demonstrate the ultrastrong coupling between the phonon (at 0.95 THz) in a MAPbI 3 film and the metallic bound states in the continuum (BICs) in Au metasurfaces. The Rabi splitting can be continuously tuned from 28% to 48.4% of the phonon frequency by adjusting the parameters (size, shape and period) of Au metasurfaces, reaching the ultrastrong coupling regime. By introducing wavelet transform, the mode evolution information of the terahertz phonon-polariton is successfully extracted. It indicates that the phonon radiation intensity of the MAPbI 3 film is enhanced as the coupling strength is increased. This work not only establishes a new platform for terahertz devices but also opens new avenues for exploring the intricate dynamics of terahertz phonon-polaritons.
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Light-Science & Applications
·
2025
·Vol. 14
·期 1
·1-10
·
IF 23.4
Li Haotao,Wang Jiming,Chen Shuming
The realization of solution-processed tandem quantum-dot LEDs (QLEDs) remains a technical challenge due to the limitations of inefficient interconnect layer and the damage caused by multiple solution processes. Here, we develop a high performance tandem QLED by face-to-face integrating a top-emitting QLED with a transparent QLED. The top and bottom units can be addressed independently, thereby enabling the tandem QLED to operate in series, parallel, and color-tunable modes for multifunctionality. In series mode, QLEDs demonstrate an ultra-low turn-on voltage of 3.3 V and a record-breaking external quantum efficiency of 60.7%. In parallel mode, QLEDs achieve an impressive brightness of over 4.8 × 10 6 cd m -2 . In color-tunable mode, the color, brightness, and color temperature can all be adjusted with a color tuning range of 114% NSTC. Moreover, both series and parallel connections contribute to an improved stability, resulting in a T 95 lifetime of nearly 30,000 h at 1000 cd m -2 , which is an improvement of approximately 2.8 times over control devices. Our work offers a feasible solution for achieving multifunctional tandem QLEDs with the advantages of solution processed, high efficiency, high brightness, long lifetime and full color tunability for various light source applications.
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Nature Photonics
·
2025
·
IF 32.9
Zhang Jiakang,Yan Wenjian,Li Zhipeng,Jiang Haokun,Peng Cheng,Lan Mengjiao,Sun He,Yang Jinxian,Wang Yanbo,Li Chongwen,Pang Shuping,Zhou Zhongmin
The commercialization of perovskite photovoltaics faces significant hurdles due to device degradation under environmental stressors, such as illumination, humidity and heat, which represents a core challenge for industrial applications. Here we present a conformational engineering strategy targeting the buried interface of perovskite solar cells and based on the structural evolution of additives—from 1,1-diphenylethylene to 1-octyl-2-(1-phenylvinyl)benzene and diethylamino hydroxybenzoyl hexyl benzoate. We decouple the contributions of the additives, including ultraviolet shielding, strain regulation and chemical passivation. In conjunction with in situ characterization, we reveal that dynamic interfacial strain regulation plays a major role in improving device stability during light–dark cycling. Our devices achieve power conversion efficiencies of 26.47% and 22.67%, for active areas of 0.09 cm 2 and 20.5 cm 2 , respectively. Under maximum power point tracking, small-area devices maintain 96.2% of their initial power conversion efficiency after 1,132 h of testing in ISOS-L-1I (continuous illumination) and 88.8% after 348 h in ISOS-LC-1 (12-h day–night cycling). This research establishes an innovative design paradigm for stable and efficient perovskite solar cells through a multifunctional strategy driven by conformational engineering.
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Science Advances
·
2025
·Vol. 11
·期 12
·
IF 12.5
Tianhong Zhou,Fengshou Tian,Shuming Chen
Ultrashort optical emission, with pulse duration ranging from nanoseconds to femtoseconds, is usually obtained from lasers. In this work, we achieve nanosecond-pulsed electroluminescence (EL) from a solution-processed fast-response quantum dot light-emitting diode (QLED). By modeling the QLED with a resistor-capacitor equivalent circuit and analyzing the transient current of the circuit, the dynamic of the carrier injection and transport process that fundamentally affects the transient EL of QLED is revealed, which helps to guide the optimization of fast-response QLED. Driven by a high current source, the optimized QLED can output stable and repeatable ultrashort EL with a pulse duration of 20 nanoseconds, a repetition rate of 50 kilohertz, and a high radiant exitance of 5.4 watts per square centimeter. Enabled by the nanosecond-pulsed EL, the developed QLED can be directly used as an instantaneous excitation source for time-resolved fluorescence spectroscopy. Meanwhile, its use as an exposure flash for high-speed imaging is also demonstrated.
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CARBOHYDRATE POLYMERS
·
2024
·
IF 10.7
Junfeng Liu,Liying Zhang,Haodi Ma,Haoyang Sun,Shu-ai Ge,Jieyi Liu,Shengdi Fan,Chunshan Quan
The limited membrane permeability and bacterial resistance pose significant challenges in the management of intracellular drug-resistant bacterial infections. To overcome this issue, we developed a bacterial-targeted drug delivery system based on quaternary ammonium chitosan-modified mesoporous silica nanoparticles (MSN-NH 2 -CFP@HACC) for the treatment of intracellular Methicillin-resistant Staphylococcus aureus (MRSA) infections. This system utilizes amino-functionalized mesoporous silica nanoparticles to efficiently load cefoperazone (CFP), and the nanoparticles' surface is coated with 2-hydroxypropyltrimethyl ammonium chloride chitosan (HACC) to target bacteria and enhance macrophage uptake. The findings indicate that MSN-NH 2 -CFP@HACC nanoparticles are efficiently internalized by macrophages, demonstrate accelerated drug release in acidic environments, and exhibit enhanced antibacterial properties, effectively suppressing the proliferation and intracellular escape of MRSA. Moreover, HACC enhances the bacterial capture ability of the nanoparticles and reduces resistance by disrupting bacterial membrane structures and inhibiting bacterial β-lactamase activity. In a murine model of MRSA bacteremia, MSN-NH 2 -CFP@HACC exhibited remarkable antibacterial efficacy and significantly attenuated severe inflammatory responses. In conclusion, MSN-NH 2 -CFP@HACC represent a promising antibiotic delivery system with exceptional antibacterial efficacy and favorable biocompatibility, thus presenting a novel strategy for addressing intracellular drug-resistant bacterial infections and demonstrating significant potential for clinical application.
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CELL BIOCHEMISTRY AND FUNCTION
·
2024
·Vol. 42
·期 2
·e3965
·
IF 2.8
Nan Liu,Yan-yan Yao,Jin Zhang,Ji-guo Zhang,Chao Wu,Du-juan Ouyang,Chang-yong Zou,Zhen-qiang Yang,Ji-xiang Li
A highly efficient chlorobenzene-degrading strain was isolated from the sludge of a sewage treatment plant associated with a pharmaceutical company. The strain exhibited a similarity of over 99.9% with multiple strains of Paenarthrobacter ureafaciens . Therefore, the strain was suggested to be P. ureafaciens LY. This novel strain exhibited a broad spectrum of pollutant degradation capabilities, effectively degrading chlorobenzene and other organic pollutants, such as 1, 2, 4-trichlorobenzene, phenol, and xylene. Moreover, P. ureafaciens LY co-metabolized mixtures of chlorobenzene with 1, 2, 4-trichlorobenzene or phenol. Evaluation of its degradation efficiency showed that it achieved an impressive degradation rate of 94.78% for chlorobenzene within 8 h. The Haldane–Andrews model was used to describe the growth of P. ureafaciens LY under specific pollutants and its concentrations, revealing a maximum specific growth rate ( μ max ) of 0.33 h −1 . The isolation and characterization of P. ureafaciens LY, along with its ability to degrade chlorobenzene, provides valuable insights for the development of efficient and eco-friendly approaches to mitigate chlorobenzene contamination. Additionally, investigation of the degradation performance of the strain in the presence of other pollutants offers important information for understanding the complexities of co-metabolism in mixed-pollutant environments. Significance statement The degradation efficiency of chlorobenzene in waste gas is difficult to deal with its high volatility and molecular stability. However, the research on treatment technology of typical chlorine-containing volatile organic compounds is still concerned. A highly efficient chlorobenzene-degrading strain, identified as Paenarthrobacter ureafaciens LY, was successfully isolated from the sludge of a sewage treatment plant associated with a pharmaceutical factory. Its degradation efficiency was evaluated and found that it achieved an impressive degradation rate of chlorobenzene within 8 h. We believe that our study makes a contribution to the insight into solving the pollution of chlorobenzene.
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APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Lang Wu,Zhineng Zhou,Qiaogang Song,Na Yu,Xinghuan Hu,Ying Zhang,Xu Su,Xintong Zhao,Shurong Wang
SnO 2 has attracted significant attention as a potential replacement for TiO 2 in perovskite solar cells (PSCs) due to its high optical transmittance, stable physicochemical properties, and ability to process at low temperatures. However, when an SnO 2 electron-transport layer is prepared using solution gel spin coating, many oxygen vacancy defects are generated in the SnO 2 bulk and on its surface. These defects may result in nonradiative recombination at the SnO 2 /perovskite interface. This study proposes a novel and effective multibottom interfacial modification strategy that introduces 1,2-propanediamine hydroiodic acid (1,2-PDADI) molecules with multiple functional groups at the SnO 2 /perovskite interface. The incorporation of 1,2-PDADI molecules effectively passivates the oxygen vacancy defects at the SnO 2 surface and considerably improves the electronic properties of SnO 2 by reducing nonradiative recombination. Additionally, the interaction between the –NH 3 group in 1,2-PDADI and PbI 2 substantially reduces the PbI 2 content, thereby inhibiting defects forming in perovskite films. As a result, PSCs modified with 1,2-PDADI achieve a higher efficiency of 24.70% and demonstrate reduced hysteresis characteristics compared to the control (22.86 %). Thus, this study offers a cost-effective, straightforward, and effective approach for realizing high-efficiency PSCs.
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