Article
Nanoscience & Nanotechnology
Jin Tao, Zhongzhu Liang, Guang Zeng, Dejia Meng, David R. Smith, Qing Huo Liu, Qingrui Yang, Menglun Zhang, Wei Pang, Jingqiu Liang, Tarik Bourouina
Summary: By integrating a perfect metamaterial absorber (PMA) with a film bulk acoustic wave resonator (FBAR) in a monolithic fashion, ultracompact uncooled infrared sensors of high sensitivity were produced. The resonance frequency of FBAR can be efficiently used as a sensor output, and the resulting sensor achieves a high absorption of 88% for an infrared spectrum centered at a wavelength of 8.2 μm.
Article
Chemistry, Multidisciplinary
Yang Wang, Yue Gu, Ailiang Cui, Qing Li, Ting He, Kun Zhang, Zhen Wang, Ziping Li, Zhenhan Zhang, Peisong Wu, Runzhang Xie, Fang Wang, Peng Wang, Chongxin Shan, Hua Li, Zhenhua Ye, Peng Zhou, Weida Hu
Summary: Uncooled infrared photodetectors have drawn attention for their low cost and compact detection systems, but typically have slow response times. This study explores a van der Waals heterojunction on epitaxial HgCdTe for uncooled mid-wavelength infrared photodetection, achieving fast response times and high detectivity.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Inyong Hwang, Mingyun Kim, Jaeyeon Yu, Jihye Lee, Jun-Hyuk Choi, Su A. Park, Won Seok Chang, Jongwon Lee, Joo-Yun Jung
Summary: SEIRA spectroscopy utilizes near-field effects in nanostructures for highly sensitive detection, with a 10 nm thick MA achieving a record-high reflection difference SEIRA signal in experiments. MAs can be mass-produced through nanoimprint lithography and dry etching, offering a promising technological pathway for sensing and detection applications.
Article
Engineering, Electrical & Electronic
Tanya Blank, Igor Brouk, Sharon Bar-Lev, Gavriel Amar, Elie Meimoun, Shlomi Bouscher, Maxim Meltsin, Michele Vaiana, Amedeo Maierna, Maria Eloisa Castagna, Giuseppe Bruno, Yael Nemirovsky
Summary: This paper introduces a novel non-imaging digital passive Infra-Red (PIR) sensing system using a CMOS-SOI-MEMS transistor as the thermal sensor, which surpasses traditional pyroelectric sensors and thermopiles in performance. Manufactured by nano-fabrication methods in standard FABs, the mosaic sensors exhibit enhanced performance and robust manufacturing on wafer level processing and vacuum packaging. Mirror optics replaces Fresnel plastic lenses to provide enhanced performance at low-cost.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Junsung Park, Mohammad M. Al Mahfuz, Rock Huebner, Dong-Kyun Ko
Summary: Low-cost, uncooled photodetectors operating in the MWIR and LWIR spectral regions have wide applications and can dominate the future infrared market. Lead selenide (PbSe) has attracted research interest due to its low manufacturing cost and favorable properties. This study reports on MWIR photoconductive film derived from colloidal PbSe nanocrystals, demonstrating high sensitization and potential for future digital additive manufacturing of infrared sensors and imagers.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jochen Vanderspikken, Wouter Maes, Koen Vandewal
Summary: This article discusses the development of wavelength-selective organic photodetectors and their early applications and potential in optical imaging field. It compares key parameters of visible and near-infrared wavelength photodetectors and explores different organic detector approaches. Moreover, it emphasizes the importance of material development and device design.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Le Wei, Jingjing Qian, Liang Dong, Meng Lu
Summary: A wavelength-selective pyroelectric sensor based on a graphene field-effect transistor (gFET) with a plasmon-enhanced pyroelectric gate (PG) is presented in this study. By incorporating gold nanorods (AuNRs) or silver nanoparticles (AgNPs) into the poly(vinylidene fluoride-co-trifluoroethylene) (PVDF-TrFE) membrane, the photothermal conversion efficiency of PVDF-TrFE in a specific narrowband wavelength range is enhanced. The PG-gFET can selectively respond to different light wavelengths, benefiting fields such as pyroelectric sensors, spectroscopy, and imaging.
ADVANCED PHOTONICS RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Ehab Awad
Summary: Graphene is a promising material for infrared applications, but standalone monolayer graphene has low infrared absorption. In this study, a novel graphene metamaterial embedded inside a Bundt optical-antenna is introduced, which significantly enhances the infrared absorption of graphene and covers a wide range of optical communication bands.
Article
Engineering, Electrical & Electronic
Marco Vallone, Alberto Tibaldi, Stefan Hanna, Anne Wegmann, Detlef Eich, Heinrich Figgemeier, Francesco Bertazzi, Giovanni Ghione, Michele Goano
Summary: Multiphysics modeling is used to analyze the role of surface plasmon-polaritons observed in gold nanorods arranged on the illuminated face of a planar HgCdTe-based mid-wavelength infrared focal plane array. The simulations show that the proposed plasmonic detector with a 1 μm-thick absorber layer significantly reduces diffusive inter-pixel crosstalk compared to conventional non-plasmonic detectors with a 5 μm-thick absorber layer, without compromising responsivity. Additionally, the plasmonic detector achieves increased detectivity in the entire MWIR band by taking advantage of the reduced absorber volume.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2022)
Article
Optics
Baoqing Wang, Cuiping Ma, Peng Yu, Alexander O. Govorov, Hongxing Xu, Wenhao Wang, Lucas V. Besteiro, Zhimin Jing, Peihang LI, Zhiming Wang
Summary: In this work, an ultra-broadband nanowire metamaterial absorber composed of vertically aligned dielectric nanowires with coaxial metallic rings is proposed. The absorber exhibits strong absorption from 0.2 to 7 μm wavelength range, making it suitable for various applications.
PHOTONICS RESEARCH
(2022)
Article
Chemistry, Physical
Quanquan Guo, Xiaoyu Wu, Xuexin Duan, Shan He, Wei Pang, Yanyan Wang
Summary: The study introduces a high-performance uncooled near-infrared detector with a giga hertz solidly mounted resonator and gold nanorods arrays. Both simulation and experimentation demonstrate significantly enhanced optical responsive sensitivity to near-infrared, opening new directions in the development of novel miniaturized, tunable NIR detectors.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Physics, Applied
Takuya Kadowaki, Tadashi Kawazoe, Masaki Sugeta, Masahiko Sano, Takashi Mukai
Summary: The Si infrared photodetector fabricated can operate without the need for cooling and exhibits high sensitivity to changes in carrier density due to stimulated emission, especially for wavelengths greater than the cutoff wavelength.
APPLIED PHYSICS EXPRESS
(2022)
Article
Chemistry, Physical
Jaroslaw Judek, Piotr Wrobel, Pawel Piotr Michalowski, Monika Ozga, Bartlomiej Witkowski, Aleksandra Seweryn, Michal Struzik, Cezariusz Jastrzebski, Krzysztof Zberecki
Summary: Titanium nitride is a conductive ceramic material with plasmonic properties comparable to metallic gold and silver. This study demonstrates that sputtered polycrystalline TiNx films on silicon at room temperature can exhibit continuous plasmonic properties from visible range to infrared range. The composition of the films, determined by nitrogen to titanium ratio, is crucial for optimizing the plasmonic properties, and different models are required to describe the optical properties at different wavelength ranges.
Article
Nanoscience & Nanotechnology
Yeongho Kim, Saud Alotaibi, Mohamed Henini, Byong Sun Chun, Sang Jun Lee
Summary: A mid-wavelength p-B-i-n infrared photodetector, consisting of ternary alloys of InAs0.9Sb0.1 and AlAs0.05Sb0.95, has been successfully operated at room temperature. The detector showed high crystalline quality and low defect density, as confirmed by high-resolution x-ray diffraction analysis. The dark current behavior and deep-level traps in the detector structure were investigated, revealing diffusion-limited current and two shallow traps in the InAsSb absorber. The detector exhibited good performance in terms of cutoff wavelength, current responsivity, and dark current density, providing high specific detectivity.
Article
Optics
Jiajun Meng, Luke Weston, Sivacarendran Balendhran, Dandan Wen, Jasper J. Cadusch, Ranjith Rajasekharan Unnithan, Kenneth B. Crozier
Summary: Chemical identification using mid-infrared spectra has various applications, including industrial production, food production, pharmaceutical manufacturing, and environmental monitoring. Researchers have demonstrated a compact microspectrometer platform that utilizes a machine learning algorithm to analyze the mid-infrared fingerprints, achieving high accuracy identification and concentration quantification.
LASER & PHOTONICS REVIEWS
(2022)
Article
Chemistry, Multidisciplinary
Shinpei Ogawa, Shoichiro Fukushima, Masaaki Shimatani
Summary: The study found that embedded hexagonal boron nitride in metallic nanoslits exhibits extraordinary optical transmission phenomena in the infrared spectrum, attributed to the hybridization of HPPs and SPRs. The calculated electric field distribution indicates that the phenomenon is due to the unique resonance induced by the hybridization of HPPs and SPRs.
Article
Materials Science, Multidisciplinary
Masaaki Shimatani, Takashi Ikuta, Yuri Sakamoto, Shoichiro Fukushima, Shinpei Ogawa, Kenzo Maehashi
Summary: In this study, turbostratic stacked chemical vapor deposition (CVD) graphene was employed to develop a mid-wavelength infrared (MWIR) photodetector, which showed enhanced performance compared to conventional single-layer graphene photodetectors. This research may contribute to the realization of low-cost, mass-producible graphene-based infrared sensors.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Materials Science, Multidisciplinary
Shoichiro Fukushima, Satoru Fukamachi, Masaaki Shimatani, Kenji Kawahara, Hiroki Ago, Shinpei Ogawa
Summary: This study presents graphene-based deep-ultraviolet photodetectors using chemical vapor deposition hexagonal boron nitride photogating. The incorporation of h-BN as a photosensitizer significantly improves the photoresponse and achieves a high responsivity under 260 nm light.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Optics
Shinpei Ogawa, Shoichiro Fukushima, Masaaki Shimatani
Summary: Graphene has potential applications in optoelectronic devices, but its photodetectors face challenges in carrier mobility and absorption. This study proposes a plasmonic metasurface based on hBN/graphene van derWaals heterostructure for wavelength-selective infrared photodetectors. The structure preserves graphene's high carrier mobility and enhances its absorption through localized surface plasmon resonance.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2022)
Review
Chemistry, Physical
Shinpei Ogawa, Shoichiro Fukushima, Masaaki Shimatani
Summary: Hexagonal boron nitride (hBN) is a key two-dimensional material that provides an ideal substrate for graphene. It has unique properties in the deep ultraviolet (DUV) and infrared (IR) wavelength bands, making it suitable for various photonic devices. This review discusses the physical properties and applications of hBN-based photonic devices in the DUV and IR wavelength regions, including light-emitting diodes, photodetectors, absorbers/emitters, hyperlenses, and enhanced absorption microscopy.
Article
Optics
Masaaki Shimatani, Shoichiro Fukushima, Manabu Iwakawa, Shinpei Ogawa
Summary: This study investigated the mechanism of graphene photogated diodes and demonstrated that a thin interfacial oxide layer is responsible for the reduction in Fermi level induced by photogating, resulting in an extraordinarily large output current in diodes with a barrier layer.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2023)
Proceedings Paper
Engineering, Electrical & Electronic
Shinpei Ogawa, Masaaki Shimatani, Shoichiro Fukushima
Summary: Graphene is a promising material for infrared photodetectors due to its high carrier mobility, broadband photoresponse, and low manufacturing cost. This study presents the development of high-performance graphene-based infrared photodetectors using field-effect transistors and graphene/semiconductor heterojunction structures. The results demonstrate high responsivity and low dark currents, which can contribute to the development of high-performance graphene-based infrared image sensors.
QUANTUM SENSING AND NANO ELECTRONICS AND PHOTONICS XVIII
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
Shinpei Ogawa, Shoichiro Fukushima, Satoshi Okuda, Masaaki Shimatani
Summary: Graphene, an atomically thin carbon-based material with a two-dimensional hexagonal lattice structure, displays unique electronic and optical properties. Photodetectors utilizing graphene with a photosensitive layer such as graphene nanoribbons have shown enhanced performance in the mid- and long-wavelength infrared regions, contributing to the advancement of high-performance broadband infrared photodetectors.
INFRARED TECHNOLOGY AND APPLICATIONS XLVII
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Shinpei Ogawa, Shoichiro Fukushima, Masaaki Shimatani, Masafumi Kimata
Summary: In this study, a metal-insulator-metal (MIM) structure incorporating a nanoslit for infrared (IR) rectification is proposed. Wavelength selective detection can be achieved by controlling the slit width or depth. Fabrication procedures using gold electroplating and chemical mechanical polishing (CMP) have been developed for these structures.
INFRARED TECHNOLOGY AND APPLICATIONS XLVII
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Masaaki Shimatani, Takashi Ikuta, Yuri Sakamoto, Shoichiro Fukushima, Satoshi Okuda, Shinpei Ogawa, Kenzo Maehashi
Summary: This study explored the fabrication and performance of highly responsive photodetectors using turbostratic stacked graphene produced by chemical vapor deposition (CVD) and the photogating effect. The results showed that turbostratic stacked CVD graphene can improve the responsivity of photodetectors and contribute to the realization of low-cost, mass-produceable high-responsivity infrared sensors.
INFRARED TECHNOLOGY AND APPLICATIONS XLVII
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Shoichiro Fukushima, Masaaki Shimatani, Satoshi Okuda, Shinpei Ogawa
Summary: The study demonstrates the properties of small-format graphene infrared array sensors, showing high responsivity of graphene FETs under MWIR light irradiation and enhanced MWIR photoresponse through photogating. In comparison, the SBDs exhibited improved dark current characteristics.
INFRARED TECHNOLOGY AND APPLICATIONS XLVII
(2021)
Proceedings Paper
Optics
Shinpei Ogawa, Shoichiro Fukushima, Masafumi Kimata
INFRARED TECHNOLOGY AND APPLICATIONS XLVI
(2020)
Proceedings Paper
Optics
Shinpei Ogawa, Masaaki Shimatani, Shoichiro Fukushima, Satoshi Okuda, Masafumi Kimata
INFRARED TECHNOLOGY AND APPLICATIONS XLVI
(2020)
Proceedings Paper
Optics
Satoshi Okuda, Masaaki Shimatani, Shoichiro Fukushima, Shinpei Ogawa, Takashi Ikuta, Kenzo Maehashi
INFRARED TECHNOLOGY AND APPLICATIONS XLVI
(2020)
Article
Physics, Applied
Masaaki Shimatani, Shoichiro Fukushima, Satoshi Okuda, Shinpei Ogawa
APPLIED PHYSICS LETTERS
(2020)