Energies
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2025
·Vol. 18
·期 9
·2162
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IF 3.2
Yufan Jiang,Dongdong Deng,Jingjing Dong
All-inorganic CsPbX3perovskites have significant potential for applications in the photovoltaic field. However, during their preparation, the slow evaporation rate of the precursor solution limits the extent of solution supersaturation, leading to porous perovskite films that substantially impair device performance. Anti-solvent engineering, which introduces a secondary solvent to modulate the crystallization process, is a well established technique in perovskite photovoltaic research. This study systematically examines the effects of four different anti-solvents on perovskite films and corresponding devices. It also investigates the optimal dipping-time of (trifluoromethyl)benzene as an anti-solvent, as well as the impact of varying amounts of anti-solvent additive perfluorinated acid. The optimized devices achieved a maximum power conversion efficiency of 12.68%.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xiuzhen Zhang,Xiyu Wang,Xiaohuan Zhang,Yuanyuan Zhang,Yongxiu Sun,Lili Liu,Wei Yan,Ning Zhang,Changyuan Zhang,Linxing Shi
In the two-step method for perovskite film fabrication, insufficient reaction between organic ammonium salts and PbI 2 affects the active layer quality, resulting in poor power conversion efficiency (PCE). In this work, we introduce pentanamine acetic acid (PenAAc) and 5-aminovaleric acid iodine (5-AVAI) as two efficient additives to modify PbI 2 layer during perovskite films fabrication via the two-step method in an air environment. After additive modifications, the quality of both PbI 2 layers is improved: PenAAc enhances crystallinity and increases PbI 2 grain size, while 5-AVAI induces a uniform and smooth PbI 2 layer. The optimized PbI 2 films facilitate the reaction between PbI 2 and organic salts, yielding a high-quality perovskite layer with enhanced crystallinity and reduced defect density. In contrast, the macromolecule structure of 5-AVAI does not diffuse after annealing, remaining in the PbI 2 layer and exerting minimal influence on the perovskite surface. However, dissociative CH 3 COO − groups in PenAAc molecules diffuse from the PbI 2 layer to the perovskite surface during annealing, forming strong interactions between I - and Pb 2+ with CH 3 COO − groups. This further improves perovskite film quality and accelerates charge carrier extraction/transport in devices. Consequently, additive-modified perovskite solar cells achieve excellent PCEs of 24.50 % (5-AVAI) and 24.65 % (PenAAc), significantly surpassing the control device (22.84 %). Moreover, hysteresis index is reduced from 4.20 % (control) to 0.33 % (5-AVAI) and 0.08 % (PenAAc). Additionally, the modified devices also demonstrated enhanced environmental stability across humidity, light, and thermal stress conditions.
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Journal of Energy Chemistry
·
2025
·
IF 14.9
Zhongyu Liu,Xiu Huang,Yuchen Zhao,Jianwei Wang,Jiaying Liu,Chenyu Zhou,Hongwei Wang,Tian Cui,Xiaohui Liu
Inorganic CsPbI 3 perovskite with superior thermal stability and photoelectric properties has developed into a promising candidate for photovoltaic applications. Nevertheless, the power conversion efficiency (PCE) of CsPbI 3 perovskite solar cells (PSCs) still lags far behind that of both organic-inorganic hybrid counterparts and the theoretical PCE limit, primarily restricted by severe fill factor (FF) and open-circuit voltage ( V OC ) deficits. Herein, an in-situ self-crosslinking strategy is proposed to construct high-performance inverted inorganic PSCs by incorporating acrylate monomers as additives into CsPbI 3 perovskite precursors. During the thermal annealing process of perovskite films, acrylate monomers can form network structures by breaking the C=C groups through an in-situ polymerization reaction, mainly anchored at the grain boundaries (GBs) and on the surfaces of perovskite. Meanwhile, the C=O groups of acrylate polymers can favorably coordinate with uncoordinated Pb 2+ , thereby decreasing defect density and stabilizing the perovskite phase. Particularly, with multiple crosslinking and passivation sites, the incorporation of dipentaerythritol pentaacrylate (DPHA) can effectively improve the perovskite film quality, suppress nonradiative recombination, and block moisture erosion. Consequently, the DPHA-based PSC achieves a champion PCE of 20.05% with a record-high FF of 85.05%, both of which rank among the top in the performance of inverted CsPbI 3 PSCs. Moreover, the unencapsulated DPHA-based device exhibits negligible hysteresis, remarkably improved long-term storage, and operational stability. This work offers a facile and useful strategy to simultaneously promote the efficiency and device stability of inverted inorganic PSCs.
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Journal of Physical Chemistry C
·
2025
·
IF 3.2
P. H. Shi,W. J. Zhai,Y. J. Ma,W. H. Zheng,J. S. Li,L. Huang,Y. R. Ren,X. Peng,L. Lin,Z. B. Yan,J.-M. Liu
The tin halide perovskites as a lead-free alternative for optoelectronics have attracted considerable attention due to their remarkable optoelectronic performance and reduced environmental toxicity. However, a major challenge remains regarding the stability issue, primarily due to the oxidation of Sn2+ to Sn4+ under ambient conditions, which leads to material degradation and poor long-term performance. Herein, we report the enhanced performance of the FASnI3 photodetector by incorporating 4-trifluoromethyl benzyl ammonium iodide (TFMBAI) into the precursor solution. Under a light intensity of 5 mW/cm2, the responsivity at 685 nm increases to 0.325 A·W–1, achieving an enhancement of nearly 57.5 times compared with the unmodified sample. Additionally, the device exhibits a broadband photoresponse ranging from 415 to 980 nm. By optimizing the addition of TFMBAI, we have reduced the proportion and defect states of Sn4+, successfully promoted the oriented crystal growth and passivated defects, and achieved a more stable, uniform, and pinhole-free perovskite film, thereby enhancing both carrier mobility and performance stability. Our results demonstrate the great potential of TFMBAI for applications in nontoxic and highly stable tin halide perovskite photodetectors.
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Science Advances
·
2025
·Vol. 11
·期 26
·
IF 12.5
Zinan Chen,Cuixia Yuan,Shuming Chen
The thickness of quantum-dot light-emitting diodes (QLEDs) is typically limited to around 100 nm, which could lead to the formation of short-circuit paths that ultimately reduce the device performance. Here, we develop micrometer-scale-thick QLEDs by using extremely conductive ZnMgO as an electron transport layer. With a H 2 O-regulated doping method, the electron concentration of the ZnMgO film is greatly increased, which results not only in the ohmic injection but also in the trap-free electron transport. As a result, micrometer-scale-thick QLEDs, with thickness of more than 10 times that of standard QLEDs, are achieved. The demonstrated micrometer-thick red QLEDs not only can be directly built on various substrates such as Cu slabs, Ag nanowire–coated substrate, Al foils, and printing papers but also can exhibit a notably enhanced T 90 life span over 11,000 hours at 1000 candelas per square meter and an ultrahigh brightness of 3,941,000 candelas per square meter, which represent 5.03- and 4.36-fold improvements over those of conventional QLEDs.
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ACS Nano
·
2025
·
IF 16
Xueyang Ren,Xuefei Zhu,Xiaodong Shao,Wen Yang,Yanmei Meng,Shiyu Chen,Yannan Wang,Jianqing Li,Qin Jiang,Benhui Hu
Elevated intraocular pressure (IOP) is a major risk factor for blindness in glaucoma patients, highlighting the critical need for continuous IOP monitoring. While traditional transpalpebral tonometers (TTs) circumvent corneal contact by adopting Goldmann applanation principles through impulsive corneal flattening forces, their measurement accuracy is inherently compromised by eyelid-induced cushion effects. In contrast, parallel-plate capacitive sensors employ constant compressive loading upon the eyelid, achieving palpebral compaction to mitigate the cushion effects. More recently, ion-pump-based capacitive sensors have emerged as promising alternatives, particularly due to their enhanced sensitivity. Nevertheless, these sensors exhibit sharp sensitivity deterioration at extended measurement ranges (0–10 kPa). This operational constraint originates from the strong hydrogen bond energies (between confining matrices and ions) and rigid block copolymer matrices’ steric hindrance. To address these limitations, we developed a transpalpebral tonometer featuring low-energy-barrier ion pumps, incorporating (3-aminopropyl)triethoxysilane (APTES)-silanized liquid metal nanoparticles (LM NPs) as confining matrices and an ionic liquid as an ion donor. The low-energy barrier arises from (1) weaker hydrogen bonds between the N–H of APTES and the F of the ionic liquid and (2) reduced crystallinity in the elastomeric matrices induced by LM NPs. Our sensor achieves a sensitivity of 24.88 kPa–1 with maintained linearity over 0–85 kPa. In vivo animal trials over 120 min validated its continuous IOP monitoring capability, reliably detecting elevated IOP states and demonstrating clinical potential for glaucoma management.
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Journal of Materials Chemistry A
·
2025
·
IF 9.5
Shafique Shareen,Haodong Wang,Yuheng Wang,Akeel Qadir,Taimoor Iqbal,Cheng Yang,Feiyu Zhao,Zhenfu Zhao,Muhammad Sulaman,Fei Zheng,Xu Wang,Ziyang Hu
The realization of high-speed optical communication and sensitive light detection with self-powered perovskite photodetectors (PDs) is imperative for advancing AI-driven optoelectronic systems, including visible light communication (VLC), surveillance, and environmental monitoring, necessitating exceptional detectivity and ultrafast response. Herein, we introduce a 2D synergy strategy employing Ti3C2Tx MXene to simultaneously enhance charge carrier transport, suppress defect states, and improve film morphology in perovskite films via percolation networks and surface passivation. The resultant self-powered perovskite PD achieves a dark current density of 1.46 × 10⁻10 A/cm², detectivity of 6.59 × 1012 Jones, a linear dynamic range exceeding 181 dB, and ultrafast response times (rise: 1.07 µs, fall: 0.74 µs), alongside robust stability with negligible degradation over continuous cycles. This work demonstrates integration of the optimized PD into an optical communication system, enabling ASCII-encoded signal reception across 460-730 nm and a sensitive light detection setup for low-light applications. Significantly, the optimized PD propels the advent of energy-efficient, high-speed optoelectronics, fostering unprecedented opportunities in AI-driven technologies.
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Journal of Physical Chemistry Letters
·
2025
·
IF 4.6
Pengtian Liu,Tingting Dai,Chao Yan,Guozhen Bai,Sushihan Lu,Zilong Wang,Zhidong Lou,Yanbing Hou,Feng Teng,Yufeng Hu
Halide perovskites have garnered significant attention for their exceptional carrier mobility, balanced bipolar transport properties, and ion-electron mixing conductivity, making them highly promising for applications, such as solar cells, photodetectors, and memristors. Despite their potential, intrinsic ions and defects within these materials complicate effective doping, and interactions between metal electrodes and perovskite materials can trigger interfacial chemical reactions that compromise device stability and performance. This study examines the influence of Ag electrodes on perovskite devices, specifically investigating the n-doping effects of Agi+ interstitial ions in MAPbI3 perovskites through an integrated approach combining first-principles density functional theory (DFT) calculations and experimental analysis. Findings reveal that Agi+ interstitial ions, generated electrochemically at Ag electrodes, penetrate the MAPbI3 structure and migrate under an applied electric field, achieving stable n-doping under controlled bias conditions. Detailed characterization of the doping process was conducted using current density–time (J–t) measurements, electrochemical AC impedance (EIS), TOF-SIMS/XPS depth profiling, and temperature/illumination-dependent studies. Additionally, the memristive behavior of the device, including doping mechanisms and the formation of metallic conductive filaments, was demonstrated, offering insights into its potential applications in advanced electronics. These findings elucidate the physicochemical interactions at metal–perovskite interfaces under bias in diode devices.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-12
·
IF 15.7
Yang Jie,Qu Geping,Qiao Ying,Cai Siyuan,Hu Jiayu,Geng Shaoyu,Li Ya,Jin Yeming,Shen Nan,Chen Shi,Jen Alex K.-Y.,Xu Zong-Xiang
Self-assembled monolayer (SAM) materials have emerged as promising materials for interface engineering in perovskite solar cells. However, achieving an optimal balance between molecular packing density, charge transport efficiency, and defect passivation remains a challenge. In this work, we propose a SAM material design strategy that synergizes flexible head groups with rigid linking groups. Using (4-(diphenylamino)phenyl)phosphonic acid as a model molecule, Compared to traditional materials such as (4-(9 H -carbazol-9-yl)phenyl)phosphonic acid and (4-(diphenylamino)phenethyl)phosphonic acid, our material generates a high-quality perovskite layer. This design achieves superior energy level alignment, improved hole extraction, and enhanced charge transport efficiency, effectively reducing non-radiative recombination. (4-(diphenylamino)phenyl)phosphonic acid-based device achieve power conversion efficiency of 26.21% and 24.49% for small- (0.0715 cm 2 ) and large-area (1 cm 2 ), respectively. This work establishes an effective approach to SAM molecular design, providing a clear pathway for improving both the efficiency and long-term stability of perovskite solar cells through interface engineering.
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Applied Materials Today
·
2025
·
IF 6.9
Xinlong Shang,Yang Li,Liang Chen,Quan Zhang,Leidang Zhou,Naizhe Zhao,Fangbao Wang,Jinlu Ruan,Shiyi He,Yapeng Zhang,Xue Du,Silong Zhang,Zhongfu An,Xiaoping Ouyang
Fast-response scintillators play a crucial role in rapid radiation detection, wherein two-dimensional (2D) perovskites have exhibited substantial potential. Enhancing the carrier confinement within 2D perovskites has been demonstrated to be effective in accelerating their luminescence decay. Despite extensive research employing carrier confinement in the interlayer direction, confinement from the inorganic layers remains relatively unexplored. In this study, intralayer carrier confinement in 2D perovskites is achieved through neodymium (Nd) doping. Centimeter-scale phenethylammonium lead bromide (PEA 2 PbBr 4 , PPB) single crystals doped with Nd 3+ are fabricated via a solution-based method. Compared to the undoped counterparts, their photoluminescence (PL) decay is markedly accelerated. Notably, the reduction in decay time is more pronounced for α rays than for γ rays , enabling the doped PPB to exhibit distinct luminescent decay characteristics for α and γ rays . This property is verified through the waveforms of single α particles and γ photons, highlighting the potential for enhanced pulse shape discrimination (PSD) between different radiation types. First-principles calculations reveal that Nd 3+ doped PPB exhibits a higher effective mass and enhanced carrier localization, signifying stronger carrier confinement. This study elucidates the impact of Nd 3+ doping on reducing the luminescent lifetime of 2D perovskite single crystals, and offers an approach to differentially regulating their scintillating decay response for high-energy particle discrimination.
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CATALYSIS LETTERS
·
2025
·Vol. 155
·期 6
·1-17
·
IF 2.4
Sun Ran,Hou Kunge,Jin Xingpeng,Yang Lihui,Song Lijie,Ouyang Chuang,Hou Jianyuan,Yuan Yuan,Liu Xingang,Zhang Renxi
The development of new technologies for removal of NO and chlorobenzene in complex flue gas situations at low temperature is a complex and demanding task. Here, the synergistic removal of NO and chlorobenzene was achieved through catalysis assisted dielectric barrier discharge (DBD) mechanism under different conditions. The experimental results suggested that the increase of specific energy density (SED) and the loading of CeO 2 strengthened the treatment of NO and chlorobenzene. A higher degradation efficiency of NO and a lower production rate of NO 2 were achieved after the introduction of chlorobenzene. The removal of chlorobenzene could also be benefited from this process, and the introduction of NO promoted CO 2 selectivity of chlorobenzene. The XPS and H 2 -TPR analyses confirmed that the reaction between chlorobenzene and NO occurred by the assistance of Ce 3+ /Ce 4+ redox cycle as well as the consumption and regeneration of chemically adsorbed oxygen. During the reaction, the oxygen vacancies (OVs) caused by plasma etching promote the redox cycle and alleviate the catalyst poisoning caused by chloride ions (Cl − ). Furthermore, a comprehensive analysis of the resulting byproducts revealed phenol as the most significant intermediate in chlorobenzene degradation, while acetaldehyde emerged as the major product resulting from ring-opening processes of chlorobenzene. Utilizing chlorobenzene from flue gas subtly, this method presents a more sustainable alternative for NO reduction, showing promise for addressing industrial emission challenges. Graphical
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PHYSICA B-CONDENSED MATTER
·
2025
·
IF 2.8
Xinshun Qin,Muhammad Umair Ali,Hongbo Mo,Zhengtian Yuan,Yanling He,Alan Man Ching Ng,Aleksandra B. Djurišić
Perovskite light-emitting diodes (LEDs) with different self-assembled monolayers (SAMs), namely 2-(9H-carbazol-9-yl)ethyl]phosphonic acid (2PACz), [4-(3,6-dimethyl-9H-carbazol- 9-yl)butyl] phosphonic acid (Me-4PACz), and [2-(3,6-Dichloro-9H-carbazol-9-yl)ethyl]phosphonic acid (Cl-2PACz), have been investigated. We find that the underlying SAM affects the perovskite morphology despite the use of poly[(9,9-dioctylfluorenyl-2,7-diyl)-alt-(4,4′-(N-(4-butylphen-yl)))] (TFB) hole transport layer between the SAM and the perovskite. Despite similar device performance in terms of maximum luminance and external quantum efficiency, the devices exhibit significant differences in lifetime which correlate with perovskite thin film morphology. We show that significant roughness is detrimental to the device stability. The devices with 2PACz SAM, which exhibit the most favorable film morphology, exhibit T 50 lifetime of 1.43 h.
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