ORGANIC ELECTRONICS
·
2021
·
IF 3.721
Li Xiang,Xuekai Huang,Ya Wang,Zhilong Xin,Gaoda Chai,Yangbing Xu,Kai Wang,Jun Chen,Chuan Liu,Xinwei Wang,Shengdong Zhang,Hang Zhou
X-ray detection is an important technology for medical diagnosis as well as industrial and security inspections. While today's commercial X-ray detectors are bulky, photodetectors based on organic semiconductors have attracted increasing attention owing to their low temperature processing capabilities, flexibility and low cost. Nonetheless, the low X-ray attenuation coefficient of organic semiconductors still hinders their practical application. Herein, a new organic-inorganic hybrid strategy is proposed to improve the X-ray sensitivity of organic photodetectors (OPDs). A solution-processed X-ray sensitive hybrid OPD is fabricated by embedding CsPbBr 3 quantum dots (QDs) into a P3HT:PC 61 BM bulk heterojunction photodiode . The QDs, acting as embedded scintillators in the organic active layer, maintain a high radioluminescence . The proposed hybrid structure enables indirect X-ray detection in a comprehensive manner. These hybrid photodetectors exhibit suppressed dark current densities in the range of tens of picoamperes per square centimeters for different weight ratios of blended QDs. The best OPD achieves a sensitivity of 229.6 e nGy −1 mm −2 (3.67 μC Gy −1 cm −2 ) and a dark current of 23.3 pA cm −2 at a low operating voltage (−3 V) for 20–80 kV “soft” X-rays, thus representing great potential for the development of next generation low cost, portable, and highly sensitive X-ray detectors.
研究领域:
材料科学
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医学影像
·
光电技术
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产品关联
DOI
高影响因子
Nanoscale Research Letters
·
2022
·Vol. 17
·期 1
·1-9
·
IF 5.418
Zhou Zhuoli,Liao Guangmeng,Song Xinyu,Dai Qinyong,Sun Lei,Peng Yingquan,Wang Peng
As an important classification of photodetectors, broad spectral photodiodes are ubiquitous in the fields of industry and scientific research. Here, we reported a type of broad spectral organic–inorganic hybrid photodiodes (OIHPDs) based on planar-bulk heterojunction, which composed of 3,4,9,10-perylenetertracarboxylic dianhydride (PTCDA), copper phthalocyanine (CuPc) and fullerene (C 60 ). In our research, the dark current of the OIHPD with 10 nm C 60 film (10 nm-C 60 OIHPD) was as low as 25.6 μA, which is about 63 times smaller than the dark current of the OIHPD without C 60 film (C 60 -free OIHPD). It is considered that the significantly enhanced performance of 10 nm-C 60 OIHPD is attributed to the introduction of the C 60 film, which act as hole-blocking layer to reduce the dark current. And through the schematic energy level model combined with experimental measurements, the reason for the dark current change was well explained. Furthermore, the specific detectivity of 10 nm-C 60 OIHPD was almost one order of magnitude larger than it of C 60 -free OIHPD, and a notable enhancement of over 10 11 cm Hz 1/2 /W was obtained due to the fiercely reduced dark current. These results provide insights on how to improve the performance of organic photodiodes.
研究领域:
材料科学
·
光电探测器研究
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DOI
PubMed
高影响因子
CRYSTENGCOMM
·
2014
·Vol. 16
·期 47
·10863-10869
·
IF 3.858
Banghong Zhou,Shuanglei Yang,Wei Wu,Lingling Sun,Mei Lei,Jun Pan,Xiang Xiong
One-dimensional semiconductor heterostructures with unique properties are suited to application in the photocatalysis field. In this study, rationally designed SnO2@TiO2 porous nanowire–nanosheet heterostructures were realized by a facile hydrothermal method via loading TiO2 nanosheets onto SnO2 porous nanowires. One-dimensional porous heterostructures formed via the self-assembly process. Due to the improved photon absorption ability and more active sites, the special heterostructures showed enhanced photocatalytic properties under mixed light, nearly 2.5 times faster than that of SnO2 porous nanowires. Our results suggest that the SnO2@TiO2 porous nanowire–nanosheet heterostructures are promising as photocatalysts.
研究领域:
材料科学
·
光催化领域
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Hongwei Li,Xueliang Li,Dazhao Wang,Jianfeng Yan,Shichao Lv,Ang Qiao,Haitao Zhang,Qiang Yan,Jianrong Qiu,Shifeng Zhou
Metal-organic frameworks (MOFs) glass is a newly invented hybrid materials with the unique optical response and great potential for photonic applications. Unfortunately, limited by the high viscosity and instability issue of the ZIF-62 precursor, the controllable synthesis of homogeneous MOFs glass remains a significant challenge. In this manuscript, it is found that reducing the stoichiometric ratio between Zn ions and the ligand precursor can effectively suppress the growth of the ZIF-62 and enable to obtain tiny precursor particles. By using them, the homogenous MOFs glass free of bubbles can be fabricated by gentle heat-treatment. This hybrid MOFs glass exhibits interesting optical response, including intense luminescence, atmosphere sensitive optical response and high energy particle scintillating emission. The applications for active atmosphere sensing and neutron detection with extremely high signal-to-noise ratio of 27.1 dB are demonstrated. The results suggest that homogenous amorphization of MOFs may create a new type of photonic material with unprecedent optical response and significant sensing application.
研究领域:
材料科学
·
光学工程
·
传感器技术
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2020
·
IF 3.99
Yan-Qing Nan,Jian-Xiu Liu,Sha-Sha Zhang,Deng-Jing Chen,Qiu-Xiang Ye,Cheng Yuan,Li-Sheng Hao
A method to construct photo-responsive wormlike micellar systems with high photo-responsive efficiency and strong photo-responsive ability and reduced impact on the environment by mixed cationic/anionic surfactants and mixed photo-sensitive additives has been proposed. For this purpose, a cleavable cationic ester-containing gemini surfactant, N , N ’-bis(2-(dodecanoyloxy)ethyl)- N , N , N ’, N ’-tetramethyl-1,3-propane diammonium dibromide (C 12 DEG 3 ), and five anionic biocompatible carboxylate surfactants, have been selected. The mixed photo-sensitive additives are composed of sodium trans -ortho-methoxycinnamate ( trans -NaOMCA) and sodium trans -cinnamate ( trans -NaCA). The mixed cationic/anionic surfactants are superior to the single cationic surfactant C 12 DEG 3 in constructing UV light-responsive wormlike micellar systems due to their stronger self-assembly ability. The molecular structure of anionic surfactant, such as the length of hydrophobic tail, the introduction of the N-methylated amide group between the hydrophobic tail and carboxylate headgroup, and the number of hydroxyl group in bile salts, is important factor influencing the self-assembly ability of the mixed systems. For single C 12 DEG 3 or the mixed cationic/anionic surfactants, the mixed photo-sensitive additives have the advantages of both trans -NaCA and trans -NaOMCA. The fast reaction rate of the trans -to- cis photoisomerization of NaOMCA leads to the high photo-responsive efficiency of the wormlike micellar systems. The addition of t rans -NaCA promotes the growth of wormlike micelles and leads to larger difference between viscosities before and after UV irradiation, demonstrating higher photo-responsive ability. The experimental results reveal that the UV light induced trans -to- cis isomerization of NaOMCA is the main reason inducing the microstructural transition from wormlike micelles to coexistence of spherical and short rodlike micelles and thus causing reduction in shear viscosities by 3–4 orders of magnitude.
研究领域:
化学
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材料科学
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环境科学
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产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
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2020
·
IF 6.551
Mengying Xu,Pier-Luc Tremblay,Ran Ding,Jianxun Xiao,Junting Wang,Yu Kang,Tian Zhang
Particulate photocatalysts developed for the solar energy-driven reduction of the greenhouse gas CO 2 have a small product range and low specificity. Hybrid photosynthesis expands the number of products with photocatalysts harvesting sunlight and transferring charges to microbes harboring versatile metabolisms for bioproduction. Besides CO 2 , abiotic photocatalysts have been employed to increase microbial production yields of reduced compounds from organic carbon substrates. Most single-reactor hybrid photosynthesis systems comprise CdS assembled in situ by microbial activity. This approach limits optimization of the morphology, crystal structure, and crystallinity of CdS for higher performance, which is usually done via synthesis methods incompatible with life. Here, shape and activity optimized CdS nanorods were hydrothermally produced and subsequently applied to Cupriavidus necator for the heterotrophic and autotrophic production of the bioplastic polyhydroxybutyrate (PHB). C. necator with CdS NR under light produced 1.5 times more PHB when compared to the same bacterium with suboptimal commercially-available CdS. Illuminated C. necator with CdS NR synthesized 1.41 g PHB from fructose over 120 h and 28 mg PHB from CO 2 over 48 h. Interestingly, the beneficial effect of CdS NR was specific to C. necator as the metabolism of other microbes often employed for bioproduction including yeast and bacteria was negatively impacted. These results demonstrate that hybrid photosynthesis is more productive when the photocatalyst characteristics are optimized via a separated synthesis process prior to being coupled with microbes. Furthermore, bioproduction improvement by CdS-based photocatalyst requires specific microbial species highlighting the importance of screening efforts for the development of performant hybrid photosynthesis.
研究领域:
生物技术
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环境科学
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材料科学
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微生物学
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Chengxin Luan,Huan Wang,Qi Han,Xiaoyan Ma,Dagan Zhang,Yueshuang Xu,Baoan Chen,Minli Li,Yuanjin Zhao
Recovery of circulating tumor cells (CTCs) from cancer patients by an efficient CTCs capture and release method can greatly increase their application in diagnostics and treatment of cancers. In this paper, we presented a folic acid (FA)-functionalized hybrid photonic barcode for capture and release of CTCs. The hybrid photonic barcodes were formed by two nano-ordered parts, poly(ethylene glycol) diacrylate (PEGDA) inverse opal structure for sustaining integrity and methacrylated gelatin (GelMA) gel filler for conjugating FA molecules to mediate cell capture. The nano-ordered structures of the hybrid photonic barcodes not only increased contact area, but also decreased steric hindrance among FA molecules. Thus, the topographic interaction between the barcodes and CTCs was greatly enhanced. In addition, GelMA gel was soft and extracellular matrix (ECM) alike, which was beneficial to decrease impairment to CTCs during the CTCs-barcode interaction as well as preserving their viability. Demonstrated by four CTCs types, Hela (epithelial tissue, folate receptor positive, FR+), A02 (bone marrow, FR+), Raji (lymphoid tissue, FR+), and A549 (epithelial tissue, folate receptor negative, FR-), FR+ CTCs could be captured efficiently with reliability and specificity. The captured cells could be controllably released with high viability just by quick trypsinization. The whole processes were simple and efficient. These features indicated that the FA-functionalized hybrid photonic barcodes were promising for full recovery of CTCs from cancer patients, which was important for diagnosis and treatment of cancer.
研究领域:
生物医学工程
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肿瘤学
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材料科学
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细胞生物学
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产品关联
DOI
PubMed
高影响因子
EUROPEAN POLYMER JOURNAL
·
2024
·
IF 5.8
Xiaoquan Li,Fuping Bian,Rui Huang,Jiyan Wei,Xuefeng Gui,Jiwen Hu,Shudong Lin
UV-curing technology is a new, green technology with the advantages of being efficient, energy-saving, and environmentally friendly; however, there is a general oxygen-inhibition problem during the UV-curing process, especially when silicone acrylates are applied to the UV-curing treatment. Herein, epoxy-based silicone prepolymers (ESP) containing Si-H bonds were prepared through the hydrosilylation reaction of poly(dimethylsiloxane-co-methylhydrosiloxane) (PDMS-PHMS) and allyl glycidyl ether (AGE) to graft epoxy groups onto silicone segments while retaining part of the Si-H bond. The epoxy groups in the prepolymers are capable of cationic photopolymerization, and the retained Si-H bonds in the prepolymers can generate highly reactive silyl radicals for initiating free-radical photopolymerization. The anti-oxygen inhibition ability of silicone acrylates was enhanced with the addition of ESPs. Through experimental investigation, it was found that ESP-3 grafted with 0.30% epoxy groups had the best effect on reducing oxygen inhibition, and the silicone acrylates were able to undergo UV curing in air without sticky surfaces when the added amounts of ESP-3 were at 20 wt%. The addition of ESP-3 has no major impact on the transparency and thermal performance of the UV-cured coatings and further enhances their hydrophobic properties. The free radical/cationic hybrid UV-cured silicone materials reduce the problem of oxygen inhibition, and the UV-cured silicone materials have great potential as hydrophobic and self-cleaning materials.
研究领域:
材料科学
·
化学工程
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产品关联
DOI
高影响因子
CATALYSIS COMMUNICATIONS
·
2011
·
IF 2.827
Jing Yang,Kunqi Wang,Liang Liang,Ligang Feng,Yuwei Zhang,Bo Sun,Wei Xing
A hybrid photoelectrochemical biofuel cell is composed of a TiO 2 film conductive glass electrode sensitized by a copper chlorophyll trisodium salt in combination with the platinized cathode and the electrolyte which contains redox mediator and enzyme as catalyst. The photovoltaic measurements indicate the optimal dye-adsorption time is 4 h and the incident photon-to-collected electron conversion efficiency is 16% at 400 nm. From the current–voltage curve the open-circuit voltage, short-circuit current density, maximum power density and overall energy conversion efficiency are 468 mV, 482 μA/cm 2 , 97 μW/cm 2 and 9.7%, respectively.
研究领域:
生物工程
·
材料科学
·
可再生能源
✓ 已验证
DOI
高影响因子
Frontiers in Oncology
·
2022
·
IF 5.738
Liu Yanqiu,Hu Xiangong,Chu Mengxiang,Guo Hongbo,Yu Jingjing,He Xiaowei
X-ray luminescence computed tomography (XLCT) is an emerging hybrid imaging modality in optical molecular imaging, which has attracted more attention and has been widely studied. In XLCT, the accuracy and operational efficiency of an optical transmission model play a decisive role in the rapid and accurate reconstruction of light sources. For simulation of optical transmission characteristics in XLCT, considering the limitations of the diffusion equation (DE) and the time and memory costs of simplified spherical harmonic approximation equation (SPN), a hybrid light transport model needs to be built. DE and SPN models are first-order and higher-order approximations of RTE, respectively. Due to the discontinuity of the regions using the DE and SPN models and the inconsistencies of the system matrix dimensions constructed by the two models in the solving process, the system matrix construction of a hybrid light transmission model is a problem to be solved. We provided a new finite element mesh regrouping strategy-based hybrid light transport model for XLCT. Firstly, based on the finite element mesh regrouping strategy, two separate meshes can be obtained. Thus, for DE and SPN models, the system matrixes and source weight matrixes can be calculated separately in two respective mesh systems. Meanwhile, some parallel computation strategy can be combined with finite element mesh regrouping strategy to further save the system matrix calculation time. Then, the two system matrixes with different dimensions were coupled though repeated nodes were processed according to the hybrid boundary conditions, the two meshes were combined into a regrouping mesh, and the hybrid optical transmission model was established. In addition, the proposed method can reduce the computational memory consumption than the previously proposed hybrid light transport model achieving good balance between computational accuracy and efficiency. The forward numerical simulation results showed that the proposed method had better transmission accuracy and achieved a balance between efficiency and accuracy. The reverse simulation results showed that the proposed method had superior location accuracy, morphological recovery capability, and image contrast capability in source reconstruction. In-vivo experiments verified the practicability and effectiveness of the proposed method.
研究领域:
医学成像
·
光学分子影像
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Infrared Millimeter and Terahertz Waves
·
2020
·Vol. 42
·期 1
·76-92
·
IF 1.765
Xie Chen,Huang Zhangwei,E Yiwen,Zhang Xi-Cheng,Kang Xusheng,Ma Yehao,Huang Pingjie,Zhang Guangxin
At present, the terahertz time-domain spectroscopic information of each component in multi-composition compounds detection is comprehensively combined. The lower resolution level of mixed spectra has posed many difficulties in signal analysis due to the overlapping characteristic information in the mixed ones. In this paper, to compare the performances of Nonnegative Matrix Factorization (NMF), Self-modeling Mixture Analysis (SMMA) and Multivariate Curve Resolution-Alternating Least Squares (MCR-ALS) on complex systems, a binary mixture and a ternary mixture are employed during THz-TDS testing. The position of the absorption peak (PK) and the correlation coefficient are used to evaluate the decomposition effects. The experimental results show that the component spectra resolved by MCR-ALS demonstrate good consistency with the sample components. Further, MCR-ALS presents excellent results in comparison with NMF and SMMA in terms of decomposing precision and computing speed. MCR-ALS thus appears a promising algorithm to resolve the THz multi-way data, and may be useful for many applications, such as medicine quality assurance and unknown component identification in the general area of terahertz science and technology.
研究领域:
光谱学
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化学计量学
·
太赫兹科学技术
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产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Jiuzhou Liu,Siwei Cao,Haoran Xu,Jiatian Song,Yichi Zhang,Jiamin Chen,Yedong Qin,Mingjie Cao,Wenjing Zhao,Qinhao Du,Zhengfeng Zhu,Huisheng Peng
Fiber solar cells present a promising power solution for wearable electronics, while fiber quantum dot-sensitized solar cells (FQDSCs) with adjustable light absorption range show great potential to efficiently harvest solar energy. However, due to the inherent difficulty in preparing high-quality active layers and enabling compact and stable interfaces on high-curvature fibers, efficient FQDSC remains unavailable. Here, a hybrid photoanode is designed by incorporating TiO 2 nanoparticle film into aligned TiO 2 nanotube arrays on a Ti wire and a hybrid counter electrode by wrapping a carbon nanotube sheet covered with Cu 2 S nanosheets on another Ti wire. The resulting FQDSC realizes sufficient light harvesting, rapid charge transport, and high structural stability, achieving a record power conversion efficiency of 11.05% that is maintained by over 90% after 1000 cycles of deformation. These FQDSCs are further integrated with fiber batteries into textiles and power a smart life-saving vest for real-time health monitoring and emergency response.
研究领域:
光伏技术
·
纳米材料
·
能量收集
·
可穿戴电子
·
太阳能转换
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）