JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2026
·
IF 16.8
Bojian Yang,Xianpengcheng Si,Xi Cheng,Zhiqiang Li,Rasha A. Awni,Deng-Bing Li,Liang Li
Light soaking (LS) is widely employed to optimize CdTe-based solar cells, yet its microscopic origin remains controversial due to the entangled roles of illumination and thermal activation. Here, we establish a decoupled experimental strategy that independently disentangles light exposure and heating, revealing their fundamentally distinct and competing effects on defect dynamics in CdSeTe solar cells. Illumination alone induces a backward drift of Cu Cd − acceptors under the light-enhanced built-in field, reducing apparent hole density and suppressing open-circuit voltage. In contrast, thermal activation promotes Cu redistribution toward the front junction and eliminates V Cd 2 − deep recombination centers, partially restoring device performance. Remarkably, when illumination and heating are simultaneously applied, a synergistic process emerges, combining enhanced carrier density, suppressed deep-level traps, and the restoration of selenium-induced passivation. This cooperative defect reconfiguration simultaneously elevates open-circuit voltage and fill factor, yielding a champion efficiency of 19.5%. Our results establish a physical framework for light soaking in CdSeTe photovoltaics and highlight defect–passivation coupling as a key lever for post-fabrication performance optimization.
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DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·121501
·
IF 7.2
Xiaoqian Ma,Han Zhang,Yi Zhao,Shuai Ma,Xiaoli Bai,Yuanchun Zhang,Daomei Chen,Jiaqiang Wang
Self-cycled photo-Fenton system, which integrates photocatalysis with Fenton technology, is investigated thoroughly in wastewater treatment due to the virtues of no addition of H 2 O 2 and accelerated circulation of Fe 2 + /Fe 3+ . Here we report an enhanced sulfur vacancy modified α-MnS/Ni 3 S 2 on nickel foam(NF), the simple hydrothermal successfully fabricated the magnetic floriform α-MnS/Ni 3 S 2-x /NF rich in sulfur defects. α-MnS enhanced the sulfur vacancy and further improved the hydrogen peroxide production performance of floriform Ni 3 S 2 . Without the external addition of both H 2 O 2 and Fenton-like metal ions, α-MnS/Ni 3 S 2-x /NF floriform exhibited an extremely high H 2 O 2 production rate of 51.6 mM·h −1 ·g −1 under visible light irradiation, which is the highest than those reported photocatalysis self-Fenton system in the literature. Interestingly, the self-cycled photo-Fenton strategy can be applied to the reduction of Cr(VI) and oxidative degradation of oxytetracycline hydrochloride(OTC), and the corresponding degradation and reduction rates all reach up to 98 %. The wide-spectrum light harvesting, photothermal effect and solar-driven photocatalysis in the α-MnS/Ni 3 S 2-x /NF are beneficial for the synergistically enhanced thermal-assisted photodegradation toward wastewater with a water evaporation rate of 2.01 kg·m −2 ·h −1 . Furthermore, a series of experiments and calculations were carried out to verify the photocatalytic mechanism. Density function theory (DFT) calculation shows that the formation of sulfur defects increases the number of active sites, decreases the energy barrier, and improves the activity and selectivity. In addition, α-MnS/Ni 3 S 2-x /NF floriform also exhibited good performance in real wastewater containing fluoronitrobenzene from a factory. Our findings may help the development of novel functional nanostructures for applications in environmental remediation and solar steam generation.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Mingmin Jia,Wenhao Cao,Qiuxia Chen,Zhiyi Xia,Shuo Shi,Mingzhi Zheng,Hengyang Mao,Meisheng Li,Yijiang Zhao,Dingliang Dai,Jianhao Qiu
In this study, a g-C 3 N 4 /MoS 2 composite membrane was successfully fabricated via electrostatic interactions and vacuum-assisted self-assembly. The established heterojunction markedly enhanced charge separation, yielding superior visible-light photocatalytic activity with 95.5% methylene blue degradation in 150 min. The membrane also demonstrated efficient dye separation (70.8% rejection for carmine red; 66.7% for malachite green) and notable antifouling properties, achieving a 74.9% flux recovery after visible-light cleaning. This work presents a synergistic strategy for simultaneous photocatalytic degradation and membrane separation in advanced water treatment.
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高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2026
·
IF 6.1
Jiayin Ji,Huidong Cai,Xiang Li,Chen Zuo,Shuyu Yuan,Qingge Feng,Jingcheng Zhao
Antimicrobial coatings with self-cleaning and long-lasting antibacterial properties are critical for medical applications to reduce healthcare-associated infections. However, existing coatings pose challenges of poor durability, limited light response, or rapid antibacterial agent loss. Herein, we report a scalable strategy to fabricate a Cu 2 O/TiO 2 composite coating (CT-37, Cu:Ti = 3:7 mass ratio) via in-situ chemical reduction and two-step semi-curing spraying, integrating hierarchical micro-nanostructured Cu₂O/TiO₂ particles with lithium polysilicate adhesive. CT-37 exhibits good superhydrophobicity (contact angle ( θ CA ) = 151.3 ± 1.4°, roll-off angle ( θ RA ) =3.4 ± 0.4°), retaining a θ CA > 150° after 10 abrasion cycles and 7 days of acid/alkali immersion. Under visible light, it achieves >99% sterilization efficiency against Escherichia coli and Staphylococcus aureus , and maintains a > 90% bactericidal rate after 50 cycles. This study reveals a novel synergistic mechanism: (i) superhydrophobicity reduces bacterial adhesion by minimizing solid-liquid contact area; (ii) rapid Cu ion release from the coating matrix directly inhibits bacterial proliferation; (iii) photocatalytic generation of reactive oxygen species (ROS, including •O 2 − , h + , and •OH) under visible light further eradicates adhered microbes. This cost-effective coating, coupled with the deepening understanding of its antimicrobial mechanism, paves the way for large-scale medical and public health applications.
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高影响因子
Land
·
2024
·Vol. 13
·期 5
·680
·
IF 3.2
Hai Xiao,Jiahao Yu,Yifan Zhang,Chuliang Xin,Jiangjun Wan,Xiaohong Tang
In China, tourism development is a crucial approach to poverty alleviation. With the consolidation of poverty alleviation achievements and the promotion of rural revitalization, it is of great significance to explore the relationship between tourism development and poverty alleviation from the perspective of multidimensional poverty. Therefore, this study took 28 key assistance counties for rural revitalization in the Sichuan–Chongqing region (hereinafter referred to as “key counties”) as the research objects, introduced NPP-VIIRS nighttime light (NTL) data, and a coupling coordination degree (CCD) model to explore the coordination relationship and mechanism between them. The results showed that from 2015 to 2020, the tourism development index (TDI) and estimated comprehensive development index (ECDI) of the key counties increased by 112.57% and 115.12%, respectively. In addition, the spatial differences in tourism development and multidimensional poverty both showed a narrowing trend. According to the results of the CCD model, the key counties basically faced coordination obstacles in the early stage, which were mainly transformed into reluctant coordination and moderate coordination in the later stage. This indicated that tourism poverty alleviation showed a coordinated development trend overall. However, the study also found that there may not be synchronicity between tourism development and poverty alleviation and analyzed the mechanism of their interaction. Overall, the study confirmed the positive impact of tourism development on alleviating multidimensional poverty. In addition, the study found that measuring multidimensional poverty based on NTL data has a high accuracy and can provide support for poverty research. These research results have an important reference value for China to carry out sustainable tourism poverty alleviation and comprehensively promote rural revitalization.
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2017
·
IF 9.446
Qun-Zeng Huang,Yan Xiong,Qian Zhang,Hong-Chang Yao,Zhong-Jun Li
Development of noble metal-free and highly efficient co-catalyst that endows semiconductor materials with high performance is of great significance towards enhancing photocatalytic H 2 evolution. Herein, a series of novel Mn 0.25 Cd 0.75 S/MoS 2 composites have been successfully prepared by a facile one-step hydrothermal method . The photocatalytic activity of the as-prepared photocatalysts for H 2 production from water splitting under visible-light irradiation (λ ≥ 400 nm) was investigated. The results showed that Mn 0.25 Cd 0.75 S/MoS 2 heterostructured composites have a higher photocatalytic activity than Mn 0.25 Cd 0.75 S, implying that the intimate interfacial contact between Mn 0.25 Cd 0.75 S and MoS 2 facilitates electron transfer from Mn 0.25 Cd 0.75 S to MoS 2 , thus promoting the separation of photogenerated charge carriers and providing more active sites for H 2 evolution reaction. The introduction of noble metal-free MoS 2 co-catalyst led to a remarkable improvement in the photocatalytic H 2 evolution activity of Mn 0.25 Cd 0.75 S, and the content of MoS 2 in composite had an important influence on the photocatalytic activity. It was confirmed that 0.7 wt% of MoS 2 loading content achieves a maximum photocatalytic H 2 evolution rate of 12.47 mmol g −1 h −1 , which was much higher than that of Mn 0.25 Cd 0.75 S and also slightly higher than that of Mn 0.25 Cd 0.75 S/Pt (1.0 wt%). This work revealed that low cost MoS 2 could replace noble metal Pt as a highly efficient co-catalyst in enhancing the photocatalytic activity of semiconductor materials.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Jianhua Lin,Liuyan Zhou,Long Ren,Yuyu Shen,Yanling Chen,Jie Fu,Lei Lei,Renguang Ye,Degang Deng,Shiqing Xu
Near-infrared (NIR) phosphors converted to light-emitting diodes (pc-LED) sources have extensive application prospects in medical imaging, foodstuff analysis and plant growth fields. However, there are some shortcomings in NIR phosphors, such as narrow emission band and poor thermal stability. Here a new wide band NIR luminescent phosphor Cr 3+ -doped Sr 3 Sc 4 O 9 (SSO) is introduced. The emission spectrum ranges from 600 nm to 1000 nm, with a peak value of 761 nm and the value of full width at half maximum (FWHM) is 120 nm. The internal quantum efficiency (IQE) of sample is about 87% according to the fitting result. The most appropriate doping concentration is x = 0.02 and the best excitation wavelength is 468 nm, which matches the commercial blue chip. At the same time, the phosphor shows good thermal stability in variable temperature spectrum test, and can maintain 70.4% emission intensity at 373 K relative to room temperature . To better understand its practical applications, packaged pc-LED is designed to show good NIR light penetration in spectral penetration tests . This study provides an excellent choice of NIR phosphors.
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2018
·
IF 11.698
Shunhang Wei,Guan Zhang,Xiaoxiang Xu
Despite a strong visible light absorbance as far as 660 nm, BaTaO 2 N generally exhibits a poor photocatalytic activity for water splitting under ordinary conditions. High levels of defects as well as photocatalytic self-decomposition are likely the major causes for this incommensuration. In this work, we have modified BaTaO 2 N by introducing Ca to the structure, i.e. BaCa x/3 Ta 1-x/3 O 2+y N 1-y (0 ≤ x, y ≤ 1). A number of important properties such as band gap, defects levels and nitrogen content can be tuned by varying the amounts of Ca in the structure. In particular, defects such as Ta 4+ species can be effectively suppressed by Ca incorporation. More importantly, photocatalytic activity for water oxidation has been significantly enhanced and stability against photocatalytic self-decomposition has also been largely improved in Ca modified BaTaO 2 N. An apparent quantum efficiency as high as ∼ 2.1% at 420 ± 20 nm has been achieved and stands as the highest AQE for BaTaO 2 N reported to date. Photoelectrochemical (PEC) analysis reveals a much higher photocurrent in Ca modified BaTaO 2 N and identifies the role of cocatalyst CoO z in reducing charge transfer resistance for water oxidation reactions. Open-circuit voltage decay (OCVD) measurements further confirm the improved charge separation conditions in Ca modified BaTaO 2 N and functions of cocatalyst CoO z in collecting and storing photo-generated holes. The optimal loading point for cocatalyst CoO z corresponds to the one that gives the highest capacity for hole storage.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Shufang Chang,Yiwen Hu,Jun Qian,Yinlin Shao,Shuang Ni,Lulu Kong,Wenyan Dan,Chun Luo,Shu Jin,Xiaoxiang Xu
Nitrogen doped Mg 2 TiO 4 spinel, i.e. Mg 2 TiO 4−x N y , has been synthesized and investigated as a photocatalyst for antibacterial activity. Mg 2 TiO 4−x N y demonstrates superior photocatalytic activity for E. coli disinfection under visible light illumination (λ ≥ 400 nm). Complete disinfection of E. coli at a bacterial cell density of 1.0 × 10 7 CFU mL −1 can be achieved within merely 60 min. Mg 2 TiO 4−x N y is capable of generating superoxide radicals ( O 2 − ) under visible light illumination which are the reactive oxygen species (ROSs) for bacteria disinfection. DFT calculations have verified the importance of nitrogen dopants in improving the visible light sensitivity of Mg 2 TiO 4−x N y . The facile synthesis, low cost, good biocompatibility and high disinfection activity of Mg 2 TiO 4−x N y warrant promising applications in the field of water purification and antibacterial products.
研究领域:
材料科学
·
环境科学
·
微生物学
·
光催化
·
纳米医学
·
生物材料
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高影响因子
OPTICS AND LASER TECHNOLOGY
·
2023
·
IF 5
Shizhou Tan,Pengcheng Jian,Maocheng Shan,Yongming Zhao,Zhihua Zheng,Yiming Yang,Yuhui Zeng,Dan Xu,Zhenyu Chen,Changqing Chen,Feng Wu,Jiangnan Dai
In this work, we demonstrated tunable structured AlGaN-based nanoporous (NP) distributed Bragg reflectors (DBRs) with high-reflectivity through one-step vertical-lateral electrochemical etching (ECE). The aperture of nanopores in the doping layer and the size and density of V-pits on the surface of NP-DBRs can be tuned by controlling the etching bias. Furthermore, by further tuning the thickness of alternating layers, we achieved high reflectivity of NP-DBRs at multiple center wavelengths within the wavelength range from 280 to 800 nm. To explore its potential applications, MoS 2 with a photoluminescence (PL) emission in the red light region was grown for the first time on the NP-DBRs. Due to the light localized effect of surface V-pits and the high reflectivity of the bottom DBRs , the PL intensity of MoS 2 was significantly enhanced by a factor of 37.3 compared to the region without NP-DBRs. The PL enhancement of MoS 2 on porous AlGaN and different periodic NP-DBRs further validated the PL enhancement mechanism. The corresponding theoretical simulations also revealed that the PL enhancement should be attributed to the combined effect of enhanced light absorption and NP-DBRs induced emission interference. The fabricated AlGaN-based NP-DBRs provide a new approach for improving the quantum efficiency of two-dimensional layered materials, which holds significant importance for advancing the development of miniaturized and integrated 2D/3D heterogeneous structure systems in the field of optoelectronics.
研究领域:
光电子学
·
半导体材料
·
纳米光子学
·
二维材料
·
固体物理
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表面科学
·
集成光子器件
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高影响因子
Laser & Photonics Reviews
·
2024
·Vol. 18
·期 11
·2400447
·
IF 9.8
Fangyi Zhao,Yuhe Shao,Quanlin Liu,Jiasong Zhong
Near-infrared (NIR) phosphor-converted light-emitting diode (pc-LED) light sources in the second NIR window (NIR-II, 1000–1700 nm) have sparked great interest for their emerging applications in non-destructive detection and medical diagnostics fields. However, the development of efficient NIR-II phosphors that can be excited by commercial blue LED chips remains a significant challenge, and thus impeding the applications of NIR pc-LED. Herein, a blue-light-excitable broadband NIR-II luminescence of Ni 2+ is achieved upon incorporating Cr 3+ and Ni 2+ into the Ca 3 Ga 2 Ge 3 O 12 (CGGO) host simultaneously. Through the energy transfer from Cr 3+ to Ni 2+ , CGGO:Cr 3+ ,Ni 2+ phosphor presents the improved NIR-II emission peaking at 1470 nm under 460 nm blue light excitation. The internal/external quantum efficiency values are significantly improved from 13.8%/3.3% to 24.6%/13.3% along with the enhanced luminescence thermal stability. Finally, a NIR pc-LED is fabricated by combining CGGO:Cr 3+ ,Ni 2+ phosphor with 450 nm blue chip, and its potential applications in non-destructive examination and biomedical imaging fields have been demonstrated. The strategy of Cr 3+ and Ni 2+ co-doping solves the problem that Ni 2+ luminescence cannot be effectively excited by blue light and provides the design insights to exploit more ultra-broadband NIR pc-LEDs based on blue LED chips.
研究领域:
材料科学
·
生物医学工程
·
光学成像
·
非侵入性检测
·
分子影像学
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Jiawei Zhu,Lisu Yu,Zhenghai Wang,Xingjian Wang,Yingdong Ou,Mengqiang Cai,Zhixu Wu,Rongxin Tang,Yong Xia,Yuhao Wang,Hui Deng
Photodetectors (PDs) are critical parts of visible light communication (VLC) systems for achieving efficient photoelectronic conversion and high-fidelity transmission of signals. Antimony sulfide (Sb2S3) as a nontoxic, high optical absorption coefficient, and low-cost semiconductor becomes a promising candidate for applications in VLC systems. Particularly, Sb2S3 PDs were verified to have significantly weak light detection ability in the visible region. However, the response speed of Sb2S3 PDs with existing device structures is still relatively slow. Herein, through optimizing the device structure for the p–i–n type PDs, a p-type Sb2Se3 hole transport layer (HTL) is designed to enhance the built-in electric field and to accelerate the migration of photogenerated carriers for the high responsivity and fast response speed. The optimal thickness of the structure is obtained through the simulation of SCAPS-1D software, and the optimized devices show high-performance parameters, including a responsivity of 0.34 A W–1, a specific detectivity (D*) of 2.20 × 1012 Jones, the −3 dB bandwidth of 440 kHz, high stability, and the value of the Sb2S3 PDs can reach 60% in the range of 360–600 nm, which indicates that the device is very suitable for working in the visible light band. In addition, the resulting Sb2S3 PD is successfully integrated into VLC systems by designing a matched light detection circuit. The results suggest that the Sb2S3 PDs are expected to provide an alternative to future VLC system applications.
研究领域:
光电子学
·
光子学
·
半导体器件
·
可见光通信
·
薄膜光电探测器
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高影响因子
危险品化学品经营许可证（带存储）