JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Xinhong Zhao,Kai Li,Yongchu Fang,Yu Tao,Xiaoxian Song,Haiting Zhang,Huaqing Yu,Zaoxue Yan
Flexible photodetectors based on vertically stacked PEDOT:PSS/PbS/CsPbCl 3 were prepared by a simple low temperature spin-coating method. Due to the synergistic effect, the flexible PEDOT:PSS/PbS/CsPbCl 3 photodetectors exhibited a high responsivity of 6.67 A/W and detectivity of 5.78 × 10 10 Jones under a relatively low external bias. The photocurrent of a series of continuous-bending shown that the flexible PEDOT:PSS/PbS/CsPbCl 3 photodetectors had excellet photocurrent stability and reproducibility. The results indicate that the vertically stacked PEDOT:PSS/PbS/CsPbCl 3 architecture has great potential in wearable and portable low-voltage optoelectronic devices.
研究领域:
材料科学
·
光电子学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2024
·
IF 8
Hui-Ye Jiang,Guo-Li Chen,Yu-Ying Xin,Shi-Kai Shen,Zhao-Peng Deng,Ying-Ming Xu,Li-Hua Huo,Shan Gao
The fabrication of low-temperature and high-response WO 3 -based gas sensor is very important for effective detection of hazardous nitric oxide , but the less association has been reported to date. Herein, cheap absorbent cottons were simply soaked into ethanol solution of tungsten hexachloride , and then the immersed template was calcined for preparing WO 3 materials with tubular morphology. Among, WO 3 -600 microtubules obtained by calcining at 600 °C are formed by the inter-linkage of nanoscale particles with better crystallinity , and possess small-size mesopores , low initial resistance and large specific surface area , as well as rich oxygen vacancy defects. Their synergism ensures its high sensing ability to ppb-level NO at low energy consumption. At lower 92 °C, WO 3 -600 sensor realizes a response value ( S = R g/ R a, R g and R a being the resistances in tested gas and air) of 167.1 toward 1 ppm NO gas, being higher than vast majority of reported WO 3 -based NO sensors. At the meantime, the sensor also possesses characteristics of fast recovery (13 s, the time for the change from R g to 10 % R g + 90 % R a), low actual detection concentration (50 ppb) and theoretical limit of detection (45 ppb), large sensitivity (the slope of calibration curve between sensor response and gas concentration) of 170.1 ppm −1 during 50–1000 ppb concentrations, as well as good selectivity , reproducibility, moisture tolerance and 60 days’ stability. In addition, we also analyzed the enhanced NO sensing mechanism.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS
·
2021
·Vol. 22
·期 1
·293
·
IF 3.576
Fan Li,Peng Li,Hongyan Zhang
A high-performance zinc oxide/tin dioxide (ZnO/SnO2) humidity sensor was developed using a simple solvothermal method. The sensing mechanism of the ZnO/SnO2humidity sensor was evaluated by analyzing its complex impedance spectra. The experimental results prove that the ZnO/SnO2composite material has a larger specific surface area than pure SnO2, which allows the composite material surface to adsorb more water to enhance the response of the ZnO/SnO2humidity sensor. ZnO can also contribute to the generation of oxygen-rich vacancies on the ZnO/SnO2composite material surface, allowing it to adsorb a large amount of water and rapidly decompose water molecules into conductive ions to increase the response and recovery speed of the ZnO/SnO2humidity sensor. These characteristics allowed the Z/S-2 humidity sensor to achieve a higher response (1,225,361%), better linearity, smaller hysteresis (6.6%), faster response and recovery speeds (35 and 8 s, respectively), and long-term stability at 11–95% relative humidity. The successful preparation of the ZnO/SnO2composite material also provides a new direction for the design of SnO2-based resistance sensors with high humidity-sensing performance.Keywords:zinc oxide/tin dioxide;specific surface area;oxygen vacancy;high response;humidity sensor
研究领域:
材料科学
·
传感器技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2021
·
IF 10.588
Ji Li,Ming Yang,Xiaoli Cheng,Xianfa Zhang,Chuanyu Guo,Yingming Xu,Shan Gao,Zoltán Major,Hui Zhao,Lihua Huo
In order to challenge high working temperature, low response and low selectivity of present NO 2 sensor, porous SnO 2 nanotoasts with a large surface area (79.94 m 2 /g) were synthesized. Thick film sensors fabricated by the SnO 2 nanotoasts exhibited a high response to NO 2 gas operating at room temperature. Excellent performance for NO 2 sensing gas at 50 °C, included the high response of 105.2 (10 ppm), low detection limitation of 0.1 ppm, fast response within 10 s, and wide range of 0.1–10 ppm (R 2 = 0.9931). These sensors also demonstrated perfect selectivity, moisture resistance and 90 days of long-term stability. SnO 2 nanotoasts sensor has excellent detection ability in actual detection. The superior response of porous SnO 2 nanotoasts towards NO 2 was attributed to the special porous structure with large specific surface area and oxygen vacancies in sensing material, which helped adsorption of the target gas molecules onto the sensing surfaces and transfer of the charge.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
ACS Sensors
·
2024
·
IF 8.2
Tianyang Mo,Xianwu Xu,Tiejun Fang,Hongwei Tao,Hongbo Wang,Ming Liang Jin,Bingjun Yu,Linmao Qian,Zhi-Jun Zhao
Developing hydrogen sensors with parts per billion-level detection limits, high response, and high stability is crucial for ensuring safety across various industries (e.g., hydrogen fuel cells, chemical manufacturing, and aerospace). Despite extensive research on parts per billion-level detection, it still struggles to meet stringent requirements. Here, high performance and ppb-level H2 sensing have been developed with palladium-doped iron oxide nanotubes (Pd@Fe2O3 NTs), which have been prepared by FeCl3·6H2O, PdCl2, and PVP electrospinning and air calcination techniques. Various characterization techniques (FESEM, TEM, XRD, and so forth) were used to prove that the nanotube structure was successfully prepared, and the doping of Pd nanoparticles was realized. The experiments show that palladium doping can significantly improve the gas response of iron oxide nanotubes. Specifically, 0.59 wt % Pd@Fe2O3 NTs have high response (Ra/Rg = 41,000), high selectivity, and excellent repeatability for 200 ppm hydrogen at 300 °C. Notably, there was still a significant response at a low detection limit (LOD) of 50 ppb (Ra/Rg = 16.8). This excellent hydrogen sensing performance may be attributed to the high surface area of the nanotubes, the p–n heterojunction of PdO/Fe2O3, which allows more oxygen to be adsorbed on the surface, and the catalytic action of Pd nanoparticles, which promotes the reaction of hydrogen with surface-adsorbed oxygen.
研究领域:
材料科学
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传感器技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF NANOPARTICLE RESEARCH
·
2013
·Vol. 15
·期 10
·1-6
·
IF 2.175
Zhang Ying,Chen Yu,Zhang Yupeng,Cong Huahua,Fu Bo,Wen Shanpeng,Ruan Shengping
A novel porous nanosized humidity-sensing material of amine-functionalized titanium metal organic framework (MOF), NH 2 -MIL-125(Ti), was investigated. NH 2 -MIL-125(Ti) nanoparticles with high phase purity and good physicochemical property were synthesized by a simple hydrothermal method. The nanosized MOF was characterized by X-ray diffraction and scanning electron microscope. The average size of the MOF nanoparticles is around 300 nm. Then NH 2 -MIL-125(Ti) humidity sensor was fabricated by coating the nanosized materials on interdigitated electrodes. The humidity sensor based on NH 2 -MIL-125(Ti) shows good linearity of RH (11–95 % RH), as well as fast response and recovery time. The RH detecting range is from 11 to 95 % RH at 100 Hz. The response and recovery time are about 45 and 50 s, respectively. Moreover, the sensing mechanism was discussed by complex impedance analysis in detail. These results indicate the potential application of NH 2 -MIL-125(Ti) in humidity sensors.
研究领域:
生物医学工程
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材料科学
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传感器技术
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纳米技术
✓ 已验证
DOI
高影响因子
RSC Advances
·
2020
·Vol. 10
·期 50
·29843-29854
·
IF 3.119
Wenwen Zeng,Yingzhi Liu,Guoliang Chen,Haoran Zhan,Jun Mei,Nan Luo,Zhoukun He,Changyu Tang
Considering the harmfulness of nitrogen dioxide (NO2), it is important to develop NO2 sensors with high responses and low limits of detection. In this study, we synthesize a novel SnO–Sn3O4 heterostructure through a one-step solvothermal method, which is used for the first time as an NO2 sensor. The material exhibits three-dimensional flower-like microparticles assembled by two-dimensional nanosheets, in situ-formed SnO–Sn3O4 heterostructures, and large specific surface area. Gas sensing measurements show that the responses of the SnO–Sn3O4 heterostructure to 500 ppb NO2 are as high as 657.4 and 63.4 while its limits of detection are as low as 2.5 and 10 parts per billion at 75 °C and ambient temperature, respectively. In addition, the SnO–Sn3O4 heterostructure has an excellent selectivity to NO2, even if exposed to mixture gases containing interferential part with high concentration. The superior sensing properties can be attributed to the in situ formation of SnO–Sn3O4 p–n heterojunctions and large specific surface area. Therefore, the SnO–Sn3O4 heterostructure having excellent NO2 sensing performances is very promising for applications as an NO2 sensor or alarm operated at a low operating temperature.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
2D Materials
·
2024
·Vol. 11
·期 2
·025024
·
IF 4.5
Bo Zhang,Yunjie Liu,Bing Hu,Fuhai Guo,Mingcong Zhang,Siqi Li,Weizhuo Yu,Lanzhong Hao
Due to its large absorption coefficient and high carrier mobility, SnS exhibits strong promise in the area of optoelectronic devices. Nevertheless, the fabrication of large-area, high-quality films for SnS photodetectors (PDs) with superior photoresponse remains a formidable task, seriously limiting its further practical application. In the present study, we report a superior-performance broadband PD founded on the epitaxial SnS film. Large-area uniform SnS films were grown epitaxially on (100)-oriented KBr using magnetron sputtering technique, further exfoliated, and transferred in a wafer size to fabricated two-ends PD devices. Benefitting from high crystallization and unique photoconductive-bolometric coupling effect, the two modes of operation exhibit a wide range of spectral responses from the visible to near-infrared wavelength (405–1920 nm). Particularly noteworthy is the SnS device fabricated, which demonstrates an impressive responsivity of 95.5 A W−1 and a detectivity of 7.8 × 1011 Jones, outperforming other devices by 1–2 orders of magnitude. In addition, SnS PD shows excellent environmental durability. This work provides a robust approach to develop high-performance broadband SnS PDs, while simultaneously offering deep insight into the light–matter interactions.
研究领域:
材料科学
·
光学工程
·
半导体物理
✓ 已验证
产品关联
DOI
高影响因子
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
·
2020
·Vol. 646
·期 19
·1655-1659
·
IF 1.24
Luyu Wang,Jinguli Wen,Yuhang Wu,Junkuo Gao
Designing a humidity sensor with high performance to quick and accurate detect relative humidity (RH) is important in various applications. Consideration must be given to both the high response and the quick reversibility. Here, based on Quartz Crystal Microbalance (QCM) sensing platform, we utilized commercial graphene oxide as a sensing material, and added commercial carbon nanocoil to block the stacking of graphene oxide layers. The fabricated novel sensor possessed super high response (4618 Hz/97 % RH) and quick reversibility (2 s). This work not only expands the application of commercial carbon materials, but also achieves the development of high-performance humidity sensor with commercial potential.
研究领域:
材料科学
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2023
·Vol. 13
·期 13
·1996
·
IF 5.3
Mutan Luo,Run Chen,Zhaowei Zhu,Chuantong Cheng,Xin Ning,Beiju Huang
A high-efficiency photodetector consisting of colloidal PbS quantum dots (QDs) and single-layer graphene was prepared in this research. In the early stage, PbS QDs were synthesized and characterized, and the results showed that the product conformed with the characteristics of high-quality PbS QDs. Afterwards, the photodetector was derived through steps, including the photolithography and etching of indium tin oxide (ITO) electrodes and the graphene active region, as well as the spin coating and ligand substitution of the PbS QDs. After application testing, the photodetector, which was prepared in this research, exhibited outstanding properties. Under visible and near-infrared light, the highest responsivities were up to 202 A/W and 183 mA/W, respectively, and the highest detectivities were up to 2.24 × 1011Jones and 2.47 × 108Jones, respectively, with light densities of 0.56 mW/cm2and 1.22 W/cm2, respectively. In addition to these results, the response of the device and the rise and fall times for the on/off illumination cycles showed its superior performance, and the fastest response times were approximately 0.03 s and 1.0 s for the rise and fall times, respectively. All the results illustrated that the photodetector based on PbS and graphene, which was prepared in this research, possesses the potential to be applied in reality.Keywords:PbS quantum dots;graphene;indium tin oxide;photodetector;high responsivity and detectivity
研究领域:
材料科学
·
光电子学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Yangyang Li,Ji Li,Ting Li,Xiaoli Cheng,Yingming Xu,Shan Gao,Lihua Huo
Chlorine (Cl 2 ), a toxic and hazardous gas with a pungent odor, has already posed threat to air quality and human health. Therefore, developing chlorine sensors with high response and low power consumption is crucial. In this work, raspberry-like SnO 2 decorated uniformly with SnS nanoparticles was synthesized via a facile solvothermal method followed by an in-situ sulfurization process, which can be used for highly selective and sensitive detection of Cl 2 at 50 °C. The SnS/SnO 2 sensor exhibits ultrahigh response (R g /R a = 1136) toward 10 ppm Cl 2 at optimal working temperature of 50 °C, achieving low detection limit down to 0.05 pp m (S = 1.52), which is 2.5 times higher than that of pure SnO 2 sensor. Its superior sensing performance can be attributed to the formation of the p-n heterostructure, which accelerates electron transfer within the material. More importantly, the as-prepared SnS/SnO 2 sensor still exhibits effective and stable detection performance toward residual chlorine in daily life, significantly extending its practical applicability and providing valuable reference for developing high-performance near room-temperature gas sensors.
研究领域:
材料科学
·
气体传感技术
·
纳米技术
·
环境监测
✓ 已验证
产品关联
DOI
高影响因子
NANOTECHNOLOGY
·
2021
·Vol. 32
·期 22
·225204
·
IF 3.874
Yali Liu,Xiaoxiang Wu,Wenxuan Guo,Mengge Li,Xinyue Niu,Jiadong Yao,Ying Yu,Boran Xing,Xiaoyuan Yan,Shucheng Zhang,Jian Sha,Yewu Wang
Heterojunction integrated by two-dimensional/three-dimensional materials has shown great potential applications in optoelectronic devices because of its fast response speed, high specific detectivity and broad spectral response. In this work, the vertical n-Si/p-GaTe heterojunction has been designed and fabricated, which shows a high responsivity up to 5.73 A W−1 and a fast response time of 20 μs at zero bias benifitting from the high efficiency of light absorption, internal photocurrent gain and strong built-in electrical field. A specific detectivity of 1012 Jones and a broad spectral response ranging from 300 to 1100 nm can also be achieved. This work provides an alternative strategy for high-performance self-powered optoelectronic devices.
研究领域:
光电技术
·
材料科学
·
半导体器件
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）