Horticulturae
·
2023
·Vol. 9
·期 7
·789
·
IF 3.1
Tao Xu,Min Zhang,Tianchi Chen,Lili Gong,Lingling Hu,Jie Yang,Haoxuan Si,Yueyan Wu
Suboptimal light stress in grapevines is increasing worldwide with the spread of grapevine cultivation, which can affect grapevine physiology and productivity, such as in Southern China. Abscisic acid (ABA) is an important hormone in plant adaptive responses to abiotic stress, including low light stress. However, ABA signaling pathway genes (APGs) are not well characterized in the grapevine, and little is known of their potentially mitigating role in grapevine growth under weak light stress. Our study aimed to explore the potential role of the ABA signaling pathway in the response of grapevines to suboptimal light conditions. In this study, APGs were identified in the grapevine genome, and the distribution of conserved motifs was shown to reflect their phylogenetic relationships. Gene duplication analysis indicated that segmental duplication was an important driver for gene expansion in the grapevine ABA signaling pathway. Suboptimal conditions of light were shown to seriously affect the growth of grapevine leaves and berries, with the differential regulation of APGs in the grapevine. Our study summarizes the basic characteristics of APGs in grapevine, which can now be examined further for their roles in grapevine’s response to suboptimal light conditions.Keywords:grape;weak light stress;abscisic acid;gene family
研究领域:
植物科学
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分子生物学
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胁迫生理学
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DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Linping Tian,Yingxuan Feng,Xinjie Chen,Hanwei Wang,Jian Lin,Weichen Shi,Lin Wei,Wenjie Xia,Qingfeng Sun,Yushan Yang,Yingying Li
Immobilization of nanometer-scale photocatalysts on a 3D polymeric substrate could play several complementary roles in photocatalysis, such as providing mechanical stability, facilitating easy recycling after usage, enhancing adsorption capability, and improving light harvesting properties through multiple reflections. To achieve stable and efficient photocatalysis under weak light conditions, 3D cellulose micro-rolls were introduced into the photocatalytic composites. Here, the formation of micro-rolls is attributed to the presence of titania nanoparticles, which generate uneven shrinkage stress in cellulose during the freeze-drying process, thereby inducing the cellulose to curl up. The dramatic structural transformation of the 3D micro-rolls increased the Brunauer-Emmett-Teller (BET) surface area of the sample. The 3D micro-roll structure is more favorable for photocatalysis due to its efficient mass transfer and exposed reactive sites, laying the foundation for enhanced adsorption capacity and photocatalytic reactions. The adsorption experiments suggested that the inner space of the micro-rolls provides a sufficient reaction zone, enabling fast mass transfer of molecules and easy access to the active sites. The samples could stand a high strain of 80 % and retain 96 % of the original maximum stress after 200 cyclic compressions, indicating excellent long-term stability. In addition, the photocatalytic tests show that with the help of micro-rolls, TiO 2 can convert and utilize weak light that would otherwise be unused, and the catalysate exhibits almost no toxicity towards Escherichia coli .
研究领域:
材料科学
·
环境科学
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DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Pengbin Gui,Yanming Sun,Liangpan Yang,Zhaosheng Xia,Shuxin Wang,Zhouyin Wang,Zhiliang Chen,Wei Zeng,Xingang Ren,Siliang Wang,Guojia Fang
Metal halide-perovskite-based photodetectors have recently emerged as a class of promising optoelectronic devices in various fields. Meanwhile, nano/microstructuring perovskite-based photodetectors are a facile integration with complementary metal-oxide semiconductors for miniaturized imaging systems. However, there are still challenges to be overcome in reducing the losses caused by light reflection on the surface of microstructural perovskites. In this work, surface microstructure engineering is employed in MAPbBr3 microsheets for reducing light reflection and improving light absorption, resulting in high-performance perovskite photodetectors. MAPbBr3 microsheets, which possess different surface morphologies of flat, upright hemisphere arrays and inverted hemisphere arrays (IHAs), are fabricated by a simple microstructure template-assisted space confinement process. The light absorption capacity of IHA MAPbBr3 is significantly higher than that of the other two structures. Hence, IHA photodetectors with excellent figures of merit, including low dark current, decent responsivity, and fast speed, are achieved. Furthermore, the noise of the IHA photodetectors is only ∼10–13 A/√Hz, which results in the superior sensitivity for weak light detection with a specific detectivity up to 1011 Jones. Our results demonstrate that surface engineering is a simple, low-cost, yet effective approach to improve the performance of nano-/micro-optoelectronic devices.
研究领域:
材料科学
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光学工程
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纳米技术
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产品关联
DOI
PubMed
高影响因子
Nano-Micro Letters
·
2025
·Vol. 17
·期 1
·1-15
·
IF 36.3
Dong Kailian,Jiang Tao,Chen Guoyi,Cui Hongsen,Wang Shuxin,Zhou Shun,Wang Chen,Yang Yi,Yao Fang,Tao Chen,Ke Weijun,Fang Guojia
The light management strategy is introduced into two-dimensional Dion-Jacobson (2D DJ) perovskite and subsequently elucidated both experimentally and theoretically.
The synthesis of surface-patterned BDAPbBr 4 microplates with high crystalline quality demonstrates the first reported instance of growing such 2D DJ-type perovskite microplates.
The optimized device exhibits excellent photodetection performance under UV region. Moreover, this work represents the successful demonstration of BDAPbBr 4 perovskite for UV weak-light communication, imaging, and polarized light detection.
研究领域:
材料科学
·
光学工程
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Yue Tian,Ying Li,Chuqiao Hu,Yaqian Yang,Di Chen,Guozhen Shen
Weak-light detection technology is widely used in various fields, including industry, high-energy physics, precision analysis, and reflection imaging. Metal–semiconductor–metal (MSM) photodetectors demonstrate high detectivity and high response speed and are one of the suitable structures for the preparation of weak-light detectors. However, traditional MSM photodetectors tend to exhibit high dark currents, which are not conducive to performance improvement. Here, a MXene–Cs3Bi2I9–MXene weak-light detector is proposed. Based on the MXene–Cs3Bi2I9 Schottky junctions, the dark current is reduced by 2 orders of magnitude and the responsivity is significantly improved compared with the traditional Cr/Au–Cs3Bi2I9–Cr/Au MSM photodetector. The device demonstrates excellent photodetection capacity with a photoresponsivity of 6.45 A W–1, a specific detectivity of 9.45 × 1011 Jones, and a fast response speed of 0.27/2.32 ms. Especially, the device yielded a superior weak-light detectable limit of 10.66 nW cm–2 and demonstrated excellent optical communication capability. Moreover, such a flexible device shows little degradation in photodetection performance after extreme bending for 4500 cycles, proving remarkable bending endurance and flexibility. The obtained results highlight the great potential of such Cs3Bi2I9/MXene devices as a stable and environmentally friendly candidate for weak-light detection.
研究领域:
材料科学
·
光电检测
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DOI
PubMed
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2018
·Vol. 25
·期 20
·20206-20216
·
IF 2.8
Wang Peifang,Guo Xiang,Rao Lei,Wang Chao,Guo Yong,Zhang Lixin
A TiO 2 /g-C 3 N 4 composite photocatalytic film was prepared by in situ synthesis method and its photocatalytic capability under weak-visible-light condition was studied. The co-precursor with different ratio of melamine and TiO 2 sol-gel precursor were treated using ultrasonic mixing, physical deposition, and co-sintering method to form the smooth, white-yellow, and compact TiO 2 /g-C 3 N 4 composite films. The prepared TiO 2 /g-C 3 N 4 materials were characterized by SEM, TEM, EDS, XRD, BET, VBXPS, and UV-vis diffuse reflectance spectra. The results of composite showed that TiO 2 and g-C 3 N 4 have close interfacial connections which are favorable to charge transfer between these two semiconductors with suitable band structure, g-C 3 N 4 retard the anatase-to-rutile phase transition of TiO 2 significantly, the specific surface area were increased with g-C 3 N 4 ratio raised. Under weak-light irradiation, composite films photocatalytic experiments exhibited RhB removal efficiency approaching 90% after three recycles. Powders suspension degradation experiments revealed the removal efficiency of TiO 2 /g-C 3 N 4 (90.8%) was higher than pure TiO 2 (52.1%) and slightly lower than pure g-C 3 N 4 (96.6%). By control experiment, the enhanced photocatalysis is ascribed to the combination of TiO 2 and g-C 3 N 4 , which not only produced thin films with greater stability but also formed heterojunctions that can be favorable to charge transfer between these two semiconductors with suitable band structure. This study presents the potential application of photocatalytic film in the wastewater treatment under weak-light situation.
研究领域:
材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
Laser & Photonics Reviews
·
2024
·
IF 9.8
Yin He,Zeyao Han,Junyu Li,Yu Gu,Yousheng Zou,Yao Wang,Jialin Yang,Wei Lei,Xiaobao Xu
Light detection and ranging (Lidar), which utilizes scattered near-infrared (NIR) light to identify objects, has shown great potential in remote sensing, autonomous driving, robotic vision, etc. However, the intensity of the scattered NIR light is significantly reduced, placing stringent demands on the selectivity and fast response of the sensing. Even though optical filters can be used to select weak signals, the photon losses arising from additional interfaces are inevitable, thus reducing the signal-to-noise ratio (SNR). In this work, a series of organic narrowband photodetectors are constructed with tunable and selective responses from 700 to 950 nm with a minimum full-width-at-half-maximum (FWHM) of ≈30 nm. To enhance response sensitivity and speed, delicate and compact photodiode architecture is applied through comprehensive device engineering. As a result, the detectors possess a sensitive response to weak NIR light with a detection limit of 3 nW, and response rise time ( τ r ) and decay time ( τ d ) of ≈24 ns and ≈1.3 µs, respectively. Moreover, a proof-of-concept Lidar based on these organic photodetectors is demonstrated with a distance resolution of ≈10 cm, which further confirms the great potential in practical application.
研究领域:
光学工程
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材料科学
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电子工程
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Xiao Lin,Hui Deng,Yi Jia,Zhixu Wu,Yong Xia,Xingjian Wang,Siwei Chen,Yingshun Cheng,Qiao Zheng,Yunfeng Lai,Shuying Cheng
Photodetectors (PDs) for weak light signal detection have wide applications for optical communication and imaging. Antimony sulfide (Sb2S3) as a nontoxic and stable light-sensitive material becomes a promising candidate for weak light PDs, which are developing in the direction of high response, high speed, and low cost. Herein, a self-powered Sb2S3 PD with the structure of FTO/TiO2/Sb2S3/Au is developed to achieve weak light detection for 300–750 nm visible light. We control the Sb2S3 thickness with about 460 nm to match depletion region width (438 nm) and obtain an excellent photoresponsivity and 3 dB bandwidth. Furtherly, we prepare pyramid structure polydimethylsiloxane (PDMS) on the illuminating surface to enhance the performance of weak light detection by light-trapping effects. The photocurrent of Sb2S3 PD with 20 μm-sized PDMS texture achieves 13.6% improvement compared with the control one. Under weak 530 nm light illumination of 1 μW cm–2, the self-powered Sb2S3 PD with PDMS achieves high responsivity (3.41 A W–1), large detectivity (2.84 × 1013 Jones), and ultrafast speed (15 μs). The present Sb2S3 PD and light-trapping strategy are expected to provide an alternative to future commercial weak light detection applications.
研究领域:
材料科学
·
光电技术
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产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2025
·
IF 5.5
Yue Han,Rui Gao,Wenbo Zeng,Yuying Xi,Chen Tang,Ting Ji,Yanxia Cui,Guohui Li
Photodetectors (PDs) capable of detecting weak light are critical for applications like astronomical observation, quantum computing, cryogenic biomedical imaging, material analysis and precision measurements. Perovskite materials, due to their high carrier mobility, long diffusion lengths, and solution processability, offer substantial advantages in PD performance. In this study, we fabricated high-quality single-crystalline nanowires (NWs) of methylammonium lead iodide (MAPbI3) and developed a high-performance metal–semiconductor-metal PD operating at 85 K. The device demonstrated an extremely low dark current of 3.7 × 10–13 A (1 V) at 85 K, 4 orders of magnitude lower than at room temperature (RT). Its detectivity exceeded RT performance by a factor of 706, reaching 7.7 × 1013 Jones, and achieved a phototo-dark current ratio exceeding 108 under 532 nm light illumination at 204 mW/cm2. As the optical power density decreased to 12 nW/cm2, detectivity further increased to 2.7 × 1015 Jones. These improvements are linked to the phase transition from tetragonal to orthorhombic crystal structure, which results in a widened bandgap. At 85 K, thermally excited carriers and ion migration are significantly suppressed, and defect self-annihilation is promoted, leading to a much-reduced dark current. Additionally, the reduced defects lower nonradiative recombination and the ordered molecular arrangement could enhance the generation and transport of photogenerated charge carriers under illumination with a power density above 40 μW/cm2 (532 nm) at 85 K. This work sets a benchmark for MAPbI3 PD performance, demonstrating the potential of perovskite-based devices for weak light detection.
研究领域:
材料科学
·
光电子学
·
凝聚态物理
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低温物理
·
半导体器件
·
纳米材料
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光电探测技术
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产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 25
·8533-8540
·
IF 6.4
Xiao Zhao,Shimao Wang,Fuwei Zhuge,Nengwei Zhu,Yanan Song,Mengyu Fu,Zanhong Deng,Xiaodong Fang,Gang Meng
All-inorganic perovskite CsPbBr3 single crystals (SCs) possessing both excellent photoelectric properties and environmental stability have become promising photoelectric materials. However, it remains challenging to prepare high-quality CsPbBr3 SCs with regular shape using a solution growth method due to the difference in growth rates along different crystal orientations and the difficulty in controlling the number of nucleation seeds. In this work, a solution refinement strategy has been introduced into the choline bromide assisted inverse temperature crystallization method for achieving high-quality cuboid-shaped CsPbBr3 SCs. The acquired CsPbBr3 SCs exhibit a relatively low trap density of 4.02 × 109 cm−3 and a relatively high carrier mobility of 89.72 cm2 V−1 s−1. Furthermore, the as-grown CsPbBr3 SC based photodetector exhibits high photodetection performance, especially ultrasensitive weak light detection performance. Under 530 nm light irradiation with a low light power density of 0.11 μW cm−2, the responsivity and external quantum efficiency of the CsPbBr3 SC based photodetector at a bias of 10 V could reach 36.4 A W−1 and 8520%, respectively, and a fast response speed with a rise time of 2.84 μs and a fall time of 6.38 μs has been achieved. It is worth noting that the photodetector exhibits an extremely low detection limit of 2.25 nW cm−2, indicating its great potential for weak light detection.
研究领域:
材料科学
·
光电子学
·
半导体物理
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产品关联
DOI
高影响因子
DYES AND PIGMENTS
·
2024
·
IF 4.1
Guodong Wang,Jiahui Li,Wei Zhang,Libin Jiang,Yuhan Mai,Jingyi Chen,Lina Deng,Liyun Chen,Yuxin Lin,Xiumei Li,Huasong Zou,Peng Xu,Longguang Jiang,Cai Yuan,Mingdong Huang
Bacterial infections of plants are widespread and highly virulent, causing serious economic losses in agricultural production worldwide. These infections become particularly prevalent during rainy weather, characterized by high humidity and low light intensity (about 2–10% of a sunny day). Here we identified a class of photosensitizers that were effective in inhibiting plant bacterial infections under rainy weather with dim light. One of these compounds, compound 1 , demonstrated exceptional efficacy by eliminating more than 4 logs (99.99%) of either Xanthomonas perforans or Xanthomonas citri subsp. citri (Xcc) strain at a concentration of 6.25 μM under rainy weather conditions with a light exposure of 28.51 J/cm 2 . For Clavibacter michiganensis ( Cm ), compound 1 demonstrated a comparable bactericidal effect at a lower concentration of 3.13 μM. Furthermore, compound 1 was effective in controlling plant leaf infections during rainy weather. Moreover, compound 1 exhibited a potent inhibitory effect on the biofilms pertinent to tomato spot disease and citrus canker under natural illumination on rainy days. Additionally, compound 1 displayed remarkable resilience to rain-wash on plant leaves, retaining 41.20% of its initial concentration following exposure to three simulated rain events. These findings provide a new strategy for plant pathogen disease management highlight its feasibility even during rainy weather.
研究领域:
植物病理学
·
农学
·
微生物学
·
药理学
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DOI
高影响因子
Advanced Optical Materials
·
2024
·Vol. 12
·期 32
·2401539
·
IF 8
Qianjin Wang,Zhilin Xiang,Peizhi Yang,Yingkai Liu,Qiuhong Tan
Metal halide perovskites recently have emerged as a promising candidate for photodetection due to their exceptional photoelectric performance. However, the high dark current in these materials has hindered their practical application to imaging. In this study, a novel halogen-mixed CsPbIBr 2 microwire photodetector that has a remarkable reduction of dark current by over 100-fold (compared to CsPbBr 3 ), along with a substantial increase in photocurrent, which yields a significantly improved on/off ratio of 6.56 × 10 4 , is developed. More importantly, the halogen-mixed perovskite photodetector exhibits enhanced photodetection performance, including a high responsivity of 133 A W −1 and a remarkable specific detectivity of 4.02 × 10 12 Jones even under ultraweak light conditions as low as 4.5 nW cm −2 . More specifically, high-resolution images are successfully obtained under ultraweak light conditions. The combined analysis of experimental results and first-principles calculation attribute the excellent performance of the CsPbIBr₂ microwire photodetector to a significant reduction in dark current by suppressing ion migration and increasing carrier effective mass, and a remarkable increase in photocurrent resulting from reduced bandgap and enhanced light absorption, as compared to CsPbBr 3 . This research represents a significant advancement in the development of high-performance 1D perovskite-based photodetectors, with promising implications for ultra-weak light imaging applications.
研究领域:
光电子学
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材料科学
·
纳米器件
·
半导体物理
·
生物医学成像
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DOI
高影响因子
危险品化学品经营许可证（带存储）