Advanced Optical Materials
·
2018
·Vol. 6
·期 23
·1800985
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IF 7.43
Li Zheng,Wenjia Zhou,Zhijun Ning,Gang Wang,Xinhong Cheng,Weida Hu,Wen Zhou,Zhiduo Liu,Siwei Yang,Kaimin Xu,Man Luo,Yuehui Yu
The hybridization of 2D materials and colloidal quantum dots (CQDs) has been demonstrated to be an ideal platform for infrared photodetectors due to the high mobility of 2D materials and the excellent light harvesting capability of CQDs. However, the realization of ambipolar, broadband, and room-temperature graphene–quantum dot phototransistors with complementary metal–oxide–semiconductor (CMOS) compatibility remains challenging. Here N, S codecorated graphene is deposited with PbS CQDs to fabricate a hybrid phototransistor on a silicon dioxide/silicon gate. The resulting device demonstrates a gate-tuneable ambipolar feature with a low gate bias of less than 3.3 V at room temperature in ambient. Broadband spectra from visible to near-infrared and to short wave infrared (SWIR) light can be detected with gain value of up to 10 5 and a fast response of 3 ms. Upon illumination by SWIR light at 1550 nm, the phototransistor exhibits an ultrahigh responsivity that is on the order of 10 4 AW −1 and a specific detectivity that is on the order of 10 12 Jones with a low driving voltage of 1 V. This decorated hybrid architecture illustrates the potential of graphene and CQDs to be integrated with silicon integrated circuits and opens a new path toward ambipolar photodetector fabrication.
研究领域:
材料科学
·
电子工程
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DOI
高影响因子
iScience
·
2021
·
IF 5.458
Wanying Du,Xionghui Jia,Zhixuan Cheng,Wanjing Xu,Yanping Li,Lun Dai
Two-dimensional (2D) semi-conductive transition metal dichalcogenides (TMDCs) have shown advantages for logic application. Complementary metal-oxide-semiconductor (CMOS) inverter is an important component in integrated circuits in view of low power consumption. So far, the performance of the reported TMDCs-based CMOS inverters is not satisfactory. Besides, most of the inverters were made of mechanically exfoliated materials, which hinders their reproducible production and large-scale integration in practical application. In this study, we demonstrate a practical approach to fabricate CMOS inverter arrays using large-area p -MoTe 2 and n -MoS 2 , which are grown via chemical vapor deposition method. The current characteristics of the channel materials are balanced by atomic layer depositing Al 2 O 3 . Complete logic swing and clear dynamic switching behavior are observed in the inverters. Especially, ultra-low power consumption of ∼0.37 nW is achieved. Our work paves the way for the application of 2D TMDCs materials in large-scale low-power-consumption logic circuits.
研究领域:
电子工程
·
材料科学
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DOI
PubMed
高影响因子
Small
·
2024
·
IF 13
Boxiang Gao,Weijun Wang,You Meng,Congcong Du,Yunchen Long,Yuxuan Zhang,He Shao,Zhengxun Lai,Wei Wang,Pengshan Xie,SenPo Yip,Xiaoyan Zhong,Johnny C. Ho
As demand for higher integration density and smaller devices grows, silicon-based complementary metal-oxide-semiconductor (CMOS) devices will soon reach their ultimate limits. 2D transition metal dichalcogenides (TMDs) semiconductors, known for excellent electrical performance and stable atomic structure, are seen as promising materials for future integrated circuits. However, controlled and reliable doping of 2D TMDs, a key step for creating homogeneous CMOS logic components, remains a challenge. In this study, a continuous electrical polarity modulation of monolayer WS 2 from intrinsic n-type to ambipolar, then to p-type, and ultimately to a quasi-metallic state is achieved simply by introducing controllable amounts of vanadium (V) atoms into the WS 2 lattice as p-type dopants during chemical vapor deposition (CVD). The achievement of purely p-type field-effect transistors (FETs) is particularly noteworthy based on the 4.7 at% V-doped monolayer WS 2 , demonstrating a remarkable on/off current ratio of 10 5 . Expanding on this triumph, the first initial prototype of ultrathin homogeneous CMOS inverters based on monolayer WS 2 is being constructed. These outcomes validate the feasibility of constructing homogeneous CMOS devices through the atomic doping process of 2D materials, marking a significant milestone for the future development of integrated circuits.
研究领域:
材料科学
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电子工程
·
半导体物理
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2018
·
IF 5.667
Kun Zhou,Zhida Zhao,Liyang Pan,Zheyao Wang
Silicon nanowire (SiNW) field-effect transistors (FETs) have been developed as various bio/chemical sensors due to their high sensitivity as a result of the huge surface-to-volume ratios. This paper presents a CMOS compatible sidewall mask technology (SMT) for top-down fabrication of SiNWs and a highly sensitive pH sensor based on SiNW FETs. The essence of SMT is to use stand-alone vertical sidewalls of a conformal thin film, fabricated by anisotropically etching away the planar part of the thin film deposited on a thin mesa, as hard masks for SiNW etching. As the feature size of the sidewalls, depending on the film thickness rather than lithography, can be controlled readily to tens to hundreds of nanometers by tailoring the film thickness, SMT allows high output and low cost fabrication of SiNWs without need of advanced lithography facilities. Complete SMT processes have been developed for fabrication of SiNW FETs, and pH sensors using SiNW FETs have been realized. Measurement results show that the pH sensors have good static characteristics and transient performance, and the sensitivity reaches 54.5 mV/pH for a wide range of pH values from 1 to 12, approaching the theoretical Nernstian limit.
研究领域:
纳米技术
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生物医学工程
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半导体器件
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DOI
高影响因子
InfoMat
·
2023
·
IF 22.7
Peilin Liu,Shuaicheng Lu,Jing Liu,Bing Xia,Gaoyuan Yang,Mo Ke,Xuezhi Zhao,Junrui Yang,Yuxuan Liu,Ciyu Ge,Guijie Liang,Wei Chen,Xinzheng Lan,Jianbing Zhang,Liang Gao,Jiang Tang
Lead sulfide (PbS) colloidal quantum dot (CQD) photodiodes integrated with silicon-based readout integrated circuits (ROICs) offer a promising solution for the next-generation short-wave infrared (SWIR) imaging technology. Despite their potential, large-size CQD photodiodes pose a challenge due to high dark currents resulting from surface states on non-passivated (100) facets and trap states generated by CQD fusion. In this work, we present a novel approach to address this issue by introducing double-ended ligands that supplementally passivate (100) facets of halide-capped large-size CQDs, leading to suppressed bandtail states and reduced defect concentration. Our results demonstrate that the dark current density is highly suppressed by about an order of magnitude to 9.6 nA cm −2 at −10 mV, which is among the lowest reported for PbS CQD photodiodes. Furthermore, the performance of the photodiodes is exemplary, yielding an external quantum efficiency of 50.8% (which corresponds to a responsivity of 0.532 A W −1 ) and a specific detectivity of 2.5 × 10 12 Jones at 1300 nm. By integrating CQD photodiodes with CMOS ROICs, the CQD imager provides high-resolution (640 × 512) SWIR imaging for infrared penetration and material discrimination.
研究领域:
材料科学
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光电技术
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半导体物理
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产品关联
DOI
高影响因子
Nanoscale
·
2016
·Vol. 8
·期 8
·4588-4598
·
IF 7.76
Wenya Xu,Junyan Dou,Jianwen Zhao,Hongwei Tan,Jun Ye,Masayoshi Tange,Wei Gao,Weiwei Xu,Xiang Zhang,Wenrui Guo,Changqi Ma,Toshiya Okazaki,Kai Zhang,Zheng Cui
Two innovative research studies are reported in this paper. One is the sorting of semiconducting carbon nanotubes and ink formulation by a novel semiconductor copolymer and second is the development of CMOS inverters using not the p-type and n-type transistors but a printed p-type transistor and a printed ambipolar transistor. A new semiconducting copolymer (named P-DPPb5T) was designed and synthesized with a special nonlinear structure and more condensed conjugation surfaces, which can separate large diameter semiconducting single-walled carbon nanotubes (sc-SWCNTs) from arc discharge SWCNTs according to their chiralities with high selectivity. With the sorted sc-SWCNTs ink, thin film transistors (TFTs) have been fabricated by aerosol jet printing. The TFTs displayed good uniformity, low operating voltage (±2 V) and subthreshold swing (SS) (122–161 mV dec−1), high effective mobility (up to 17.6–37.7 cm2 V−1 s−1) and high on/off ratio (104–107). With the printed TFTs, a CMOS inverter was constructed, which is based on the p-type TFT and ambipolar TFT instead of the conventional p-type and n-type TFTs. Compared with other recently reported inverters fabricated by printing, the printed CMOS inverters demonstrated a better noise margin (74% 1/2 Vdd) and was hysteresis free. The inverter has a voltage gain of up to 16 at an applied voltage of only 1 V and low static power consumption.
研究领域:
材料科学
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电子工程
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产品关联
DOI
PubMed
高影响因子
BIOSENSORS & BIOELECTRONICS
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2017
·
IF 7.78
Qingrui Yang,Shuting Pan,Yuan Zhao,Hao Zhang,Wei Pang,Xuexin Duan
In this work, gigahertz solidly mounted resonators (SMRs) (2.5 GHz) were designed and fabricated to construct a novel particle-resonator system to achieve the biomolecular stiffness sensing in real time. The positive frequency shift of the system was used to estimate the stiffness of biomolecules connecting between the SMR and attached particles. The working principle was revealed by the mathematical analysis of the general block-spring model of the system. Further interpretations about the mechanism of such elastic interaction from the perspective of acoustic resonant modes of SMRs were given by finite element method. Biotin-streptavidin, antibody and antigen binding system were used as model molecular linkers to study the frequency shift varied with different particle diameters and particle densities. Different linker stiffness was realized by adjusting the concentrations of antigens connected with particles which form specific binding with antibodies immobilized on the SMR. The results fairly agree with the simulation results demonstrating the proposed particle-resonator system as an effective method to realize the real-time biomolecular stiffness detection.
研究领域:
生物物理学
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纳米技术
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传感器技术
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产品关联
DOI
PubMed
高影响因子
Light-Science & Applications
·
2025
·Vol. 14
·期 1
·1-10
·
IF 23.4
Mu Ge,Lin Yangye,Fu Kerui,Tang Xin
Biological visions have inspired the development of artificial vision systems with diverse visual functional traits, however, the detected wavelength is only in visible light between 0.4 and 0.78 μm, restricting their applications. Snakes generate a thermal image of animals due to pit organs for detecting and converting infrared, allowing them to accurately target predators or prey even under darkness. Inspired by natural infrared visualized snakes, we propose artificial vision systems with CMOS sensors-integrated upconverters to break visible light limitations to realize 3840 × 2160 ultra-high-resolution short-wave infrared (SWIR) and mid-wave infrared (MWIR) visualization imaging for the first time. Through colloidal quantum dot barrier heterojunction architecture design of infrared detecting units and the introduction of co-hosted emitting units, the luminance and upconversion efficiency reach up to 6388.09 cd m −2 and 6.41% for SWIR, 1311.64 cd m −2 and 4.06% for MWIR at room temperature. Our artificial vision systems broaden a wide spectrum of applications within infrared, such as night vision, agricultural science, and industry inspection, marking a significant advance in bioartificial vision.
研究领域:
生物启发
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光电子学
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红外成像
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传感器技术
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人工智能
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材料科学
·
纳米结构
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产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-7
·
IF 14.7
Liu Yanliang,Gao Chaosong,Li Dong,Zhang Xin,Zhu Jiongtao,Wu Meng,Liu Wenjun,Shi Tongyu,He Xingchen,Wang Jiahong,Huang Hao,Sheng Zonghai,Liang Dong,Yu Xue-Feng,Zheng Hairong,Sun Xiangming,Ge Yongshuai
High performance X-ray detector with ultra-high spatial and temporal resolution are crucial for biomedical imaging. This study reports a dynamic direct-conversion CMOS X-ray detector assembled with screen-printed CsPbBr 3 , whose mobility-lifetime product is 5.2 × 10 −4 cm 2 V –1 and X-ray sensitivity is 1.6 × 10 4 µC Gy air –1 cm –2 . Samples larger than 5 cm \(\times\) 10 cm can be rapidly imaged by scanning this detector at a speed of 300 frames per second along the vertical and horizontal directions. In comparison to traditional indirect-conversion CMOS X-ray detector, this perovskite CMOS detector offers high spatial resolution (5.0 lp mm −1 ) X-ray radiographic imaging capability at low radiation dose (260 nGy). Moreover, 3D tomographic images of a biological specimen are also successfully reconstructed. These results highlight the perovskite CMOS detector’s potential in high-resolution, large-area, low-dose dynamic biomedical X-ray and CT imaging, as well as in non-destructive X-ray testing and security scanning.
研究领域:
医学成像
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材料科学
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放射学
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生物医学工程
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DOI
高影响因子
FISH & SHELLFISH IMMUNOLOGY
·
2022
·
IF 4.622
Xiaoli Huang,Senyue Liu,Fengyuan Zuo,Lin Luo,Defang Chen,Yangping Ou,Yi Geng,Yufan Zhang,Gang Lin,Shiyong Yang,Wei Luo,Lizi Yin,Zhi He
Methods of supporting mucosal immune barrier integrity and prevention of some pathogenic infections in aquatic species , are key areas of active study, often focusing on feed additives . The objectives of this study were to explore the effects of feeding cMOS (concentrated mannan oligosaccharide) on the gill and skin mucosal barriers of goldfish ( Carassius auratus Linnaeus ) and evaluate health status during Ichthyophthirius multifiliis infection. After feeding the cMOS-containing diet for 60 days, Hematoxylin and eosin (H&E) staining showed greater length of gill lamella and thicker dermal dense layer, while Alcian Blue and Periodic acid–Schiff (AB-PAS) staining showed higher numbers of mucin cells in cMOS fed fish. Chemical analysis showed that fish fed cMOS had greater enzyme activity of lysozyme (LZM) and alkaline phosphatase (AKP) in gill and skin tissues, while qRT-PCR revealed higher expression of Muc-2 and IL-1β , as well as lower expression of IL-10 . After Ichthyophthirius multifiliis challenge, goldfish fed the cMOS diet had lower mortality and infection rates, as well as fewer visible white spots on the body surfaces. Histologically, the gill and skin of these fish presented less tissue damage and fewer parasites, and had a greater number of mucus cells. In addition, the expression of Muc-2 and IL-10 were notably higher while the expression of IL-1β was significantly lower in cMOS fed goldfish than control fed fish. In this study, cMOS fed goldfish had stronger immune barrier function of skin and gill mucous, and better survival following Ichthyophthirius multifiliis infection.
研究领域:
水生生物学
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免疫学
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渔业科学
·
兽医学
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产品关联
DOI
PubMed
高影响因子
Advanced Science
·
2023
·Vol. 10
·期 14
·2206699
·
IF 15.1
Hao Dong,Xubin Zheng,Chen Cheng,Libin Qian,Yaoxuan Cui,Weiwei Wu,Qingjun Liu,Xing Chen,Yanli Lu,Qing Yang,Fenni Zhang,Di Wang
Advanced machine intelligence is empowered not only by the ever-increasing computational capability for information processing but also by sensors for collecting multimodal information from complex environments. However, simply assembling different sensors can result in bulky systems and complex data processing. Herein, it is shown that a complementary metal-oxide-semiconductor (CMOS) imager can be transformed into a compact multimodal sensing platform through dual-focus imaging. By combining lens-based and lensless imaging, visual information, chemicals, temperature, and humidity can be detected with the same chip and output as a single image. As a proof of concept, the sensor is equipped on a micro-vehicle, and multimodal environmental sensing and mapping is demonstrated. A multimodal endoscope is also developed, and simultaneous imaging and chemical profiling along a porcine digestive tract is achieved. The multimodal CMOS imager is compact, versatile, and extensible and can be widely applied in microrobots, in vivo medical apparatuses, and other microdevices.
研究领域:
传感器技术
·
生物医学工程
·
微机电系统
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产品关联
DOI
PubMed
高影响因子
IEEE SENSORS JOURNAL
·
2025
·
IF 4.5
Ying Fang,Dehong Yang,Ziqi Wang,Xiaoyin Liu,Ruowang Dong,Jinbiao Ma,Jiahao Xu,Di Wang,Qingjun Liu,Fenni Zhang
Developing compact, sensitive, and fully integrated electrochemiluminescence (ECL) imaging systems is essential for advancing next-generation biosensors and point-of-care (POC) diagnostics. However, conventional ECL platforms typically require bulky, lens-based optical components to capture weak photon emissions, limiting their miniaturization and clinical utility. Here, we present a miniaturized, lensless on-chip ECL imaging platform (ECL-CMOS) that integrates electrochemical sensing directly with a CMOS imaging chip via contact-mode coupling. This architecture significantly enhances photon collection efficiency, expands the imaging field of view, and eliminates the need for external optics or alignment procedures. The system enables spatiotemporal detection of ECL signals from classical reaction pairs, including luminol/H₂O₂ and Ru(bpy)₃²⁺/TPrA, with high sensitivity and reproducibility. As a proof of concept for biomedical applicability, we demonstrate sensitive and quantitative glucose detection in both synthetic and human urine samples. The ECL-CMOS platform offers a scalable, cost-effective, and high-performance solution for real-time biochemical sensing, and holds strong potential for broad deployment in POC diagnostics, environmental analysis, and resource-limited settings.
研究领域:
生物医学工程
·
分析化学
·
即时检验
·
分子诊断
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微流控技术
·
生物传感器
✓ 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）