Article
Chemistry, Multidisciplinary
Shusen Lin, Rakesh Kulkarni, Rutuja Mandavkar, Md Ahasan Habib, Shalmali Burse, Sundar Kunwar, Jihoon Lee
Summary: In this work, a hybrid UV photodetector was constructed by combining multi-metallic plasmonic alloy NPs on a GaN photoactive layer, leading to a significant enhancement in photocurrent and excellent performance parameters. Among the various devices, the tri-metallic AgAuCu NP photodetector demonstrated the highest performance with superior photoresponsivity, detectivity, and EQE.
Article
Chemistry, Multidisciplinary
Yanan Zhang, Shujie Jiao, Junhua Zhang, Shuo Liu, Dongbo Wang, Shiyong Gao, Jinzhong Wang
Summary: A GaOOH/Ga2O3 heterojunction was achieved through a one-step annealing treatment, and its solar blind photoresponse performance was characterized using photoelectrochemical detectors. The results showed that the GaOOH/Ga2O3 heterojunction detector exhibited superior performance in pure solar-blind ultraviolet detection.
Article
Chemistry, Multidisciplinary
Chang Liu, Xiaodong Li, Tiangui Hu, Wenkai Zhu, Faguang Yan, Tiesheng Wu, Kaiyou Wang, Lixia Zhao
Summary: Integrating GaN nanopillars with graphene/GaN/Ti/Au photodetector enhances detection performance. The nanopillars reduce dark current by decreasing contact area between GaN and graphene electrode. When illuminated with UV light, the nanopillars create enhanced electric field and increase UV light absorption and photocurrent.
Article
Nanoscience & Nanotechnology
Meng Yuan, Mingkun Zhang, Zhao Fu, Shan Han, Yuning Zhang, Shaoxiong Wu, Rongdun Hong, Xiaping Chen, Jiafa Cai, Dingqu Lin, Zhengyun Wu, Baoping Zhang, Jicheng Wang, Feng Zhang
Summary: A significant enhancement in ultraviolet (UV) detection is achieved by etching microhole arrays and utilizing localized surface plasmon resonance (LSPR) of aluminum nanoparticles (NPs) on 4H-SiC metal-semiconductor-metal (MSM) photodetectors (PDs). The PDs with different microhole diameters demonstrate an ultralow dark current at a bias of 5V. The PD with 3μm microholes shows the best performance with a responsivity 35% higher than the device without microholes. The combination of 3μm microholes and aluminum NPs results in a nearly 6 times enhancement in peak responsivity compared to the device without aluminum NPs.
ACS APPLIED NANO MATERIALS
(2023)
Article
Materials Science, Ceramics
Elluz Pacheco, Badi Zhou, Ali Aldalbahi, Andrew F. Zhou, Peter X. Feng
Summary: Utilizing the superflat surface of ultrananocrystalline diamond, highly precise UNCD nanowire arrays were fabricated to develop high-performance UV photodetectors. The large surface-to-volume ratio of the nanowires significantly increased the number of surface trap states, effectively confined the active area of charge carriers, and shortened transit time, resulting in enhanced photoconductivity and response speed. The zero-biased UV photodetectors based on nitrogen-incorporated ultrananocrystalline diamond nanowire arrays demonstrated a responsivity of 2.0 A/W for 350 nm incident light at room temperature, with well-defined UVA and UVB photocurrent signals and a rise and decay time of less than 1 second.
CERAMICS INTERNATIONAL
(2022)
Article
Optics
Zhiying Zhou, Fengzhou Zhao, Cheng Wang, Xiaoxuan Li, Shunli He, Dan Tian, Dengying Zhang, Lichun Zhang
Summary: In this study, the morphology, crystalline structure, and optical properties of CuI films were investigated. A p-CuI/n-GaN heterojunction UV photodetector with strong UV spectral selectivity and outstanding self-powered detection performance was successfully fabricated.
Article
Materials Science, Multidisciplinary
Pengfei Qiao, Kang Liu, Bing Dai, Benjian Liu, Wenchao Zhang, Jiecai Han, Jiaqi Zhu
Summary: It was demonstrated that localized surface plasmon resonance (LSPR) supported by In nanoislands on diamond surface could enhance ultraviolet (UV) absorption. Comparative experiments were conducted on diamond UV photodetectors with and without In nanoislands. The results showed that the photodetector with In nanoislands had a responsivity of 2.94x 10-3 A/W, which was approximately 192 times higher than that without In. The UV/viable rejection ratio was enhanced to about 87 times and the photodetector with In also exhibited better time response characteristic. Finite difference time domain (FDTD) simulation further confirmed the optical absorption enhancement effect of In localized surface plasmons (LSPs).
DIAMOND AND RELATED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Zhen-Feng Zhang, Chao-Nan Lin, Xun Yang, Jin-Hao Zang, Kai-Yong Li, Ya-Cong Lu, Yi-Zhe Li, Lin Dong, Chong-Xin Shan
Summary: In this study, high-quality polycrystalline diamond is prepared using microwave plasma chemical vapor deposition. A solar-blind photodetector array with good uniformity and stability is demonstrated. The planar photodetector array based on polycrystalline diamond can be used in imaging systems to obtain clear images.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Optics
Yu Wang, Chuankai Liu, Hao Qian, Hangzan Liu, Lixiang Han, Xiaozhou Wang, Wei Gao, Jingbo Li
Summary: This study proposes a p-n junction-coupled MIS normally-off HEMT UVPD with excellent light triggering performance and fast response speed, demonstrating good stability and suitability for applications in UV communication and space exploration.
Article
Materials Science, Multidisciplinary
Song Qi, Jiahang Liu, Jianying Yue, Xueqiang Ji, Jiaying Shen, Yongtao Yang, Jinjin Wang, Shan Li, Zhenping Wu, Weihua Tang
Summary: In this work, a graphene/beta-Ga2O3/Ag asymmetric Schottky junction photodetector was constructed to address the issue of elevated dark currents in existing graphene/Ga2O3 devices. By taking advantage of the asymmetric structure design to suppress dark current and the transparent graphene electrode to increase carrier collection efficiency, the device achieved outstanding responsivity, detectivity, external quantum efficiency, and response time. Importantly, it exhibited low dark current and high light-to-dark ratio. Overall, the graphene/beta-Ga2O3/Ag asymmetric Schottky junction photodetector has considerable potential as a deep ultraviolet detector.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Engineering, Electrical & Electronic
Ruchi Singh, Ritesh Bhardwaj, Gaurav Siddharth, Pawan Kumar, Shaibal Mukherjee
Summary: The study demonstrates that in ZnO-based homojunction p-i-n UV photodetectors, increasing the thickness of the top p-type layer leads to a decrease in peak responsivity, while increasing the thickness of the i-ZnO layer results in an increase in responsivity. Additionally, replacing the p-type layer material can significantly improve responsivity and dark current performance.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Jiang Li, Rui Wang, Zhaowen Bai, Gang Wang, Xinmiao Zhang, Junsheng Yuan, Jinyuan Zhou, Erqing Xie, Xiaojun Pan
Summary: In this study, photoelectrochemical (PEC) type ultraviolet photodetectors (UVPDs) based on KNbO3/ZnO heterojunctions were fabricated and found to possess excellent performance and appropriate band structures for UV radiation monitoring. Compared to PEC UVPDs based on pure ZnO and KNbO3, the developed PEC UVPDs based on KNbO3/ZnO showed higher performances with a responsivity of 0.1 A/W, rise and decay times of 8 ms and 11 ms, and a linear wavelength response from 320 to 400 nm. These results highlight the high sensitivity, responsivity, and rapid response of the PEC UVPDs based on KNbO3/ZnO heterojunctions, suggesting their great potential for UV detection.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Physics, Multidisciplinary
Umit Dogan, Fahrettin Sarcan, Kamuran Kara Koc, Furkan Kuruoglu, Ayse Erol
Summary: This paper investigates the effects of annealing temperature on the performance of a ZnO thin film-based UV photodetector. The results show that increasing the annealing temperature leads to larger grain sizes in the ZnO film, resulting in a red shift in the cut-off wavelength and enhanced sensitivity and speed of the photodetector.
Article
Chemistry, Multidisciplinary
Jennyfer Zapata-Farfan, Morteza Hasanzadeh Kafshgari, Sergiy Patskovsky, Michel Meunier
Summary: Culture-based diagnosis of bacterial diseases is time-consuming and can lead to antibiotic resistance or bacterial mutation. A molecular-level diagnostic technique that is widely available and requires no complex analysis or expensive equipment is of great interest. In this study, a promising analytical approach using nanoplasmonic biomarkers is presented, which can accurately detect pathogenic bacteria. These biomarkers, possessing greater photostability and biocompatibility, serve as selective markers and amplifying agents in optical biomedical detection. The proposed system shows potential for rapid diagnostic tests as point-of-care devices in emergency departments, clinics, and public hospitals.
Article
Materials Science, Multidisciplinary
Ziying Tang, Huying Zheng, Bicheng Wang, Lisheng Wang, Yaqi Wang, Runchen Wang, Zhiren Qiu, Xianghu Wang, Shichen Su, Lin Li, Hai Zhu
Summary: In this report, a high performance beta-phase Ga203 single-crystalline film deep ultraviolet (DUV) solar-blind photodetector was successfully fabricated using the hybrid Ga/GaO buffer layer method. The detector exhibited low dark-state current and high UV photon responsibility. It also demonstrated ultrafast transient characteristics for DUV signals and was capable of capturing high contrast two-dimensional scanning images.
MATERIALS TODAY PHYSICS
(2023)
Article
Chemistry, Physical
Qi-Wen Chen, Ze-Qing Guo, Jian-Ping Zhou
Summary: Multifunctional continuous solid solutions NFMTO-x were successfully synthesized via a one-step hydrothermal method by controlling the ratio of Mg and Fe. The NFMTO-x materials exhibited enhanced visible light response, effective adsorption and photocatalytic degradation of organic pollutants, CO2 methanation capability, and easy recyclability due to their magnetic properties. This research provides a significant multifunctional material for water purification.
APPLIED SURFACE SCIENCE
(2024)
Review
Chemistry, Physical
George E. Stan, Maziar Montazerian, Adam Shearer, Bryan W. Stuart, Francesco Baino, John C. Mauro, Jose M. F. Ferreira
Summary: Bioactive glasses have the ability to form strong bonds with tissues and release therapeutic ions. However, their biomechanical compatibility limits their use in load-bearing applications. The use of magnetron sputtering technology to fabricate BG coatings shows promise in improving their efficacy and potential for application.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zhaoxuan Wang, Zhicheng Yan, Zhigang Qi, Yu Feng, Qi Chen, Ziqi Song, Meng Huang, Peng Jia, Ki Buem Kim, Weimin Wang
Summary: The corrosion behavior of Fe-60 and Fe-83 ribbons in 0.6 M NaCl was studied. Fe-60 exhibited a local corrosion mode and formed a stable passivation film with higher corrosion resistance, while Fe-83 showed a combination of local and global corrosion modes and had lower corrosion resistance. Controlling the precipitation of nanocrystalline phases and increasing the POx content in the passivation film significantly improved the corrosion resistance of Fe-based glassy alloys.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hao-Kai Peng, Sheng-Yen Zheng, Wei-Ning Kao, Ting-Chieh Lai, Kai-Sheun Lee, Yung- Hsien Wu
Summary: This study investigates the effects of high energy/fluence proton radiation on the performance of HfZrOx-based FeFETs memory with different Zr content. The results show that the characteristics of FeFETs are influenced by proton radiation, and the extent of the influence depends on the Zr content. FeFETs with 50% Zr content exhibit minimal changes in memory window and demonstrate good endurance and retention performance.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zongyi Yue, Guangyi Wang, Zengguang Huang, Sihua Zhong
Summary: In this study, AZO and ITO films were successfully tuned as excellent passivation layers for c-Si surfaces, achieving effective minority carrier lifetime and outstanding optical properties through the optimization of annealing temperature and interfacial silicon oxide.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Martin Hruska, Jan Kejzlar, Jaroslav Otta, Premysl Fitl, Michal Novotny, Jakub Cizek, Oksana Melikhova, Matej Micusik, Peter Machata, Martin Vrnata
Summary: This paper presents a detailed study on the hydrogen sensing capabilities of highly nanoporous black gold films. The films exhibit fast response and recovery times at low temperatures. Different levels of nanoporosity were prepared and tested to investigate the sensing properties, and it was found that nanoporous black gold is suitable for hydrogen sensing. The sensitivity of the film depends on its nanoporosity.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yupu Wang, Gaofeng Teng, Chun To Yiu, Junyi Zhu
Summary: In the study of BM-SCO and HSCO thin films, it was found that H vacancies tend to prefer sites near the external surface or oxygen vacancy channels (OVCs), while H interstitials prefer sites of oxygen on a layer that contains six-fold coordinated Co. These findings not only enrich the understanding of complex surface phenomena of defect formation but also provide an explanation for the reversibility during phase transformation.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jiafeng Lu, Linping Teng, Qinxiao Zhai, Chunhua Wang, Matthieu Lancry, Ye Dai, Xianglong Zeng
Summary: In this study, we achieved full control of fiber nanograting orientation by manipulating laser polarization, and tailored space variant fiber nanogratings, which expanded the diversity in fiber nanograting engineering.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yibo Liu, Yujie Tao, Yue Liu, Qi Sun, Qinrong Lin, Kexin Kang, Qinghua Zhang, Qingjie Sun
Summary: This study investigates the wettability of the Ti-Cu-Fe multi-metal system, specifically the wetting behaviors of CuSi3 droplets on TC4 and 304SS plates. The results show that the CO2 + Ar gas atmosphere significantly affects interfacial mass transfer, thus influencing the wettability of the systems.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jimei Liu, Fei Wang, Rong Guo, Yuqi Liu, Mengyu Zhang, Jaka Sunarso, Dong Liu
Summary: This study developed Co/MXene composites with anti-corrosion properties by varying the cobalt content. These composites exhibited remarkable electromagnetic absorption performance and high resistance to corrosion under various corrosive conditions. The study also revealed the mechanism of electron transfer from cobalt to MXene and the electromagnetic dissipation behavior originated from polarization loss alone.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Moujie Huang, Yongsong Ma, Jingbo Yang, Lingyun Xu, Hangqi Yang, Miao Wang, Xin Ma, Xin Xia, Junhao Yang, Deli Wang, Chuang Peng
Summary: Strong metal-support interactions (SMSIs) are important for enhancing catalytic activities and stability in thermal catalysis. This study demonstrates a method to create SMSIs in electrocatalysis using carbon nanotubes and Ru nanoparticles, resulting in excellent catalytic activity and stability.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Ravi Trivedi, Brinti Mondal, Nandini Garg, Brahmananda Chakraborty
Summary: This study explores the potential of biphenylene as a nanocarrier for the delivery of the anticancer drug cisplatin. It is found that biphenylene offers physical stability, rapid release rate, solubility, and bio-compatibilities compared to other nanocarriers. The adsorption of cisplatin on the surface of biphenylene involves charge transfer from cisplatin to biphenylene. The drug is shown to be released at body temperature in an acidic environment. Biphenylene also exhibits excellent cytotoxicity activity and cellular uptake of the drug. Overall, biphenylene shows promise as a potential nanocarrier for cisplatin delivery.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hyun Jeong, Hyeong Chan Suh, Ga Hyun Cho, Rafael Salas-Montiel, Hayoung Ko, Ki Kang Kim, Mun Seok Jeong
Summary: In this study, a potential platform to enhance Raman scattering and increase the number of observable Raman modes in monolayer transition metal dichalcogenides (TMDs) was proposed. The platform consisted of large-scale arrays of gold micropillars (MPs), which were able to enhance the Raman intensity of TMDs and make difficult-to-detect Raman modes observable. The platform showed great industrial advantages and wide applicability due to its low cost, simple process, large controllable area, and short process time.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yasir Abbas, Shafqat Ali, Sajjad Ali, Waqar Azeem, Zareen Zuhra, Haoliang Wang, Mohamed Bououdina, Zhenzhong Sun
Summary: In this study, FeOx@SPNO-C core-shell nanospheres as a catalyst for degradation of sulfamethoxazole (SMX) were successfully synthesized. The synergistic interaction between FeOx and SPNO-C, high carbon charge density, and the presence of C = O groups and N/Fe-Nx sites were found to be key factors for the enhanced degradation of SMX.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Qiaoting Yang, Yuxiao Gong, Yan Qian, Zhou-Qing Xiao, Serge Cosnier, Xue-Ji Zhang, Robert S. Marks, Dan Shan
Summary: This study proposes a hierarchical confinement strategy to design Prussian blue nanoparticles (PB NPs) with satisfactory electrocatalytic ability and stability. The catalytic synthesis of PB NPs is achieved through a hydrothermal process, and the as-prepared PB@NH2MIL exhibits efficient electronic transmission and enhanced electrocatalytic properties.
APPLIED SURFACE SCIENCE
(2024)