Article
Energy & Fuels
S. Catalan-Gomez, E. Martinez Castellano, M. Schwarz, M. Montes Bajo, L. Dorado Vargas, A. Gonzalo, A. Redondo-Cubero, A. Gallego Carro, A. Hierro, J. M. Ulloa
Summary: This study investigates the use of core-shell gallium nanoparticles as functional light scatterers on solar cells. By optimizing the nanoparticle size, the short-circuit current of the solar cells is significantly improved. The underlying physical mechanism is studied through optical measurements and simulations, and a method to reduce the plasmonic effect of the nanoparticles is demonstrated.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Review
Chemistry, Multidisciplinary
Fabrizio Guzzetta, Cameron W. Jellett, Jalal Azadmanjiri, Pradip Kumar Roy, Saeed Ashtiani, Karel Friess, Zdenek Sofer
Summary: The attention in recent decades has been focused on the optoelectronic properties of indium and gallium chalcogenides, leading to advancements in fundamental and applied science. Group III-VI compounds have laminated structures that can be exfoliated to monolayers. Besides indium and gallium chalcogenides, there are other uncommon compounds in the family of group III-VI compounds, which have various crystal lattices, including layered structures. Aluminum chalcogenides show potential as anodes in batteries and semiconductors. Studies on thallium-based compounds are still exploring their semiconducting and thermoelectric properties. This review aims to summarize the significant features of these unusual materials and propose new studies to revive their potential in future technology.
Article
Chemistry, Multidisciplinary
Pan Xia, Bin Sun, Margherita Biondi, Jian Xu, Ozan Atan, Muhammad Imran, Yasser Hassan, Yanjiang Liu, Joao M. Pina, Amin Morteza Najarian, Luke Grater, Koen Bertens, Laxmi Kishore Sagar, Husna Anwar, Min-Jae Choi, Yangning Zhang, Minhal Hasham, F. Pelayo Garcia de Arquer, Sjoerd Hoogland, Mark W. B. Wilson, Edward H. Sargent
Summary: This research reports a novel co-passivation strategy for fabricating indium arsenide CQD photodetectors, which maintains charge carrier mobility and improves passivation by using methyl ammonium acetate and indium chloride as ligands, resulting in a doubling of the photoluminescence lifetime. The resulting devices achieved a 37% external quantum efficiency (EQE) at 950 nm, the highest reported value for InAs CQD photodetectors.
ADVANCED MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Ping Ma, Xianliang Li, Yuchi Zhang, Le Han, Yan Xu
Summary: By synthesizing hierarchical spinel-type semiconductors MGa2O4 (M = Ni, Co) through a hydrothermal method and subsequent calcination, their gas sensing performances were systematically investigated, revealing that the TEA gas sensing properties are significantly influenced by M(II) ions in the spinel structure.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Engineering, Electrical & Electronic
Chao Xie, Jiyu Xu, Yi Wang, Wenhua Yang, Yuyi Zhao, Siliang Wang, Hao Liu, Qi Wang, Xueguang Yuan, Wei Zeng, Zhixiang Huang
Summary: This work reports a highly sensitive SWIR photodetector composed of a two-dimensional MXene and three-dimensional In0.53Ga0.47 As heterostructure. The heterostructure shows notable photovoltaic activity and can operate in self-powered mode at zero bias with high light-to-dark ratios and other outstanding performance parameters.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2022)
Article
Materials Science, Multidisciplinary
Ching-Fu Lin, Amine Khitous, Hsiao-Wen Zan, Olivier Soppera
Summary: A new method for preparing gold nanoparticles/indium-zinc-oxide nanocomposite thin films is proposed, showing good photoresponsivity and detection ability to a longer wavelength range. The laser-annealed Au NPs/IZO photodetectors demonstrate useful operating reliability and stability over an extended period.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Jong Yul Park, Byoung-Gue Min, Jong-Min Lee, Woojin Chang, Dong Min Kang, E-San Jang, Junhyung Kim, Jeong-Gil Kim
Summary: The authors propose criteria for recess etching in order to fabricate T-gates for InGaAs high electron mobility transistors (HEMTs). By patterning additional rectangular pads on the source and drain metals during e-beam lithography, they are able to measure the drain-to-source resistance (R-ds) and current (I-ds). The ratio (& UGamma;) of R-ds and I-ds before and after etching can be used as a criterion to determine the optimal time to stop the etching process. By applying the proposed criteria, the authors have successfully fabricated InGaAs metamorphic HEMTs with excellent performance.
ELECTRONICS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Dongsun Muhammad, Dongsun Choi, Darshan H. Parmar, Benjamin Rehl, Yangning Zhang, Ozan Atan, Gahyeon Kim, Pan Xia, Joao M. Pina, Mengsha Li, Yanjiang Liu, Oleksandr Voznyy, Sjoerd Hoogland, Edward H. Sargent
Summary: In this study, the synthesis challenges of InSb colloidal quantum dots (CQDs) were investigated and it was found that uncontrolled reduction of the antimony precursor hinders the controlled growth of CQDs. A synthetic strategy combining nonpyrophoric precursors with zinc halide additives was developed to overcome this challenge. Experimental and computational studies showed that zinc halide additives decelerate the reduction of the antimony precursor, facilitating the growth of more uniformly sized CQDs. The choice of halide also provided additional control over this effect.
ADVANCED MATERIALS
(2023)
Review
Energy & Fuels
Jiaying Chen, Youtian Mo, Chaoying Guo, Jiansen Guo, Bingshe Xu, Xi Deng, Quan Xue, Guoqiang Li
Summary: The combination of III-V compound semiconductor materials and organic semiconductor materials is a potential pathway to solve the problems of conventional doped p-n junction solar cells. This review presents the recent progress of organic-inorganic hybrid solar cells based on polymers and III-V semiconductors, including materials, devices, growth processes, patterning and etching processes, advanced device structure designs, and optimization pathways for efficiency enhancement. The future development of such hybrid cells is also discussed.
Review
Materials Science, Multidisciplinary
Himani Arora, Artur Erbe
Summary: The field of two-dimensional materials, particularly III-VI monochalcogenides like indium selenide and gallium selenide, has attracted significant interest due to their high intrinsic mobility and direct bandgap properties. However, their sensitivity to environmental influences and limited scalable synthesis methods have hindered their practical applications. Research has focused on improving device structures and developing effective encapsulation techniques to prevent degradation.
Article
Materials Science, Multidisciplinary
Nasir Alfaraj, Kuang-Hui Li, Meshal Alawein, Chun Hong Kang, Laurentiu Braic, Nicolae Catalin Zoita, Adrian Emil Kiss, Tien Khee Ng, Boon S. Ooi
Summary: This article investigates the ultrahigh sensitivity and DUV photodetection capability of a hybrid oxide-nitride stack grown heterogeneously on a conductive ceramic crystal. It was found that the growth process of beta-Ga2O3 crystal on TiN introduced additional defects, resulting in DUV photodetectors with true solar-blind characteristics.
ADVANCED MATERIALS TECHNOLOGIES
(2021)
Article
Nanoscience & Nanotechnology
Denice N. Feria, Feng-Hsuan Hsu, Yi-Chieh Chan, Bo-Rui Chen, Chang-Jer Wu, Tai-Yuan Lin
Summary: This study incorporates a water-soluble Cr-phycoerythrin biomaterial into the photodetector to observe its effects on the optical and electronic properties. The fabricated photodetector demonstrates an extended absorption detection region, enhanced optoelectronic performance, and switchable function properties. By alternatively dripping and removing the Cr-PE, the detection region of the photodetector can be switched.
Article
Engineering, Electrical & Electronic
Bowen Song, Bei Shi, Simone Tommaso Suran-Brunelli, Si Zhu, Jonathan Klamkin
Summary: In this study, top-illuminated proof-of-concept InGaAs photodiode arrays were successfully realized on (001) Si substrates using direct heteroepitaxy. The performance and imaging capabilities of these devices were evaluated.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Jae-Yun Lee, Gergely Tarsoly, Suchang Yoo, Fei Shan, Heung Gyoon Ryu, Seungkeun Choi, Yong Jin Jeong, Sung-Jin Kim
Summary: This study focuses on fabricating transistors using high electron mobility a-IGZO semiconductor in transparent electronics, and discusses how optimizing layer structure can improve device performance, especially in reducing hysteresis and enhancing device reproducibility.
Article
Chemistry, Physical
Taebin Lim, Jiseob Lee, Dongyeon Woo, Joonyoung Kwak, Jin Jang
Summary: This article presents a multifunctional optoelectronic device that combines photodetection, photosynaptic behavior, and photomemory. The device demonstrates high responsivity to blue light and shows excellent nonlinearity in synaptic weight potentiation and depression. It also achieves high accuracy in pattern recognition.
Article
Engineering, Electrical & Electronic
David Z. Ting, Arezou Khoshakhlagh, Alexander Soibel, Sarath D. Gunapala
JOURNAL OF ELECTRONIC MATERIALS
(2020)
Review
Chemistry, Analytical
David Z. Ting, Sir B. Rafol, Arezou Khoshakhlagh, Alexander Soibel, Sam A. Keo, Anita M. Fisher, Brian J. Pepper, Cory J. Hill, Sarath D. Gunapala
Article
Physics, Applied
Alexander Soibel, David Z. Ting, Anita M. Fisher, Arezou Khoshakhlagh, Brian Pepper, Sarath D. Gunapala
APPLIED PHYSICS LETTERS
(2020)
Article
Physics, Applied
David Z. Ting, Alexander Soibel, Arezou Khoshakhlagh, Sam A. Keo, Anita M. Fisher, Sir B. Rafol, Linda Hoeglund, Cory J. Hill, Brian J. Pepper, Sarath D. Gunapala
Summary: In this study, it was found that the barrier infrared detector structure combining p-type and n-type absorber layers can improve quantum efficiency while reducing fabrication demands. Additionally, the structure performs better under lower biasing conditions.
APPLIED PHYSICS LETTERS
(2021)
Article
Engineering, Electrical & Electronic
David Z. Ting, Sir B. Rafol, Arezou Khoshakhlagh, Sam A. Keo, Alexander Soibel, Anita M. Fisher, Brian J. Pepper, Cory J. Hill, Sarath D. Gunapala, Thomas S. Pagano
Summary: In this study, InAs/InAsSb type-II strained layer superlattice high-operating temperature barrier infrared detector (HOT-BIRD) focal plane arrays (FPAs) were fabricated for midwavelength infrared hyperspectral imaging applications. The FPA demonstrated high mean quantum efficiency and low dark current density in the 3-5μm band, with low noise equivalent differential temperature (NEDT) and high NEDT operability.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2022)
Article
Engineering, Electrical & Electronic
David Z. Ting, Arezou Khoshakhlagh, Alexander Soibel, Sam A. Keo, Anita M. Fisher, Brian J. Pepper, Linda Hoglund, Sir B. Rafol, Cory J. Hill, Sarath D. Gunapala
Summary: By adding p-type absorber layers, the QE of the InAs/InAsSb T2SLS unipolar barrier infrared detectors was enhanced due to longer electron diffusion length. However, the presence of metallurgical and surface p-n junctions affected the dark current characteristics, and the detectors performed better under lower biasing conditions.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Article
Physics, Applied
Tobias Wenger, Richard Muller, Cory J. J. Hill, Anita Fisher, David Z. Z. Ting, Daniel Wilson, Sarath D. D. Gunapala, Alexander Soibel
Summary: This article demonstrates the monolithic integration of InAsSb-based infrared photodetectors with metasurface lenses, which act as optical concentrators. The metalenses, based on circular subwavelength nanoposts, can enhance detector responsivity and maintain performance at high temperatures. Detectors integrated with metalenses exhibit high detectivities up to room temperature.
APPLIED PHYSICS LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Thomas S. Pagano, Dean L. Johnson, James P. McGuire, Mark A. Schwochert, David Z. Ting
Summary: Looking ahead to the next generation of hyperspectral infrared atmospheric sounders, grating spectrometers show promise for improved performance and reduced complexity. This article reviews the technology used in the Atmospheric Infrared Sounder (AIRS) and highlights the advantages of grating spectrometers.
IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING
(2022)
Proceedings Paper
Engineering, Aerospace
Sarath Gunapala, David Ting, Sir Rafol, Alexander Soibel, Arezou Khoshakhlagh, Sam Keo, Brian Pepper, Anita Fisher, Cory Hill, Edward Luong, Thomas Pagano, Paul Lucey, Robert Wright, Miguel Nunes, Luke Flynn, Sachidananda Babu, Parminder Ghuman
SENSORS, SYSTEMS, AND NEXT-GENERATION SATELLITES XXIV
(2020)
Proceedings Paper
Engineering, Electrical & Electronic
Sarath Gunapala, David Ting, Alexander Soibel, Arezou Khoshakhlagh, Sir Rafol, Cory Hill, Sam Keo, Anita Fisher, Brian Pepper
2020 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2020)
Proceedings Paper
Engineering, Electrical & Electronic
Sarath Gunapala, David Ting, Sir Rafol, Alexander Soibel, Arezou Khoshakhlagh, Sam Keo, Brian Pepper, Anita Fisher, Cory Hill, Thomas Pagano, Paul Lucey, Robert Wright, Miguel Nunes, Luke Flynn, Sachidananda Babu, Parminder Ghuman
QUANTUM SENSING AND NANO ELECTRONICS AND PHOTONICS XVII
(2020)
Proceedings Paper
Optics
Sarath Gunapala, Sir Rafol, David Ting, Alexander Soibel, Arezou Khoshakhlagh, Sam Keo, Brian Pepper, Anita Fisher, Edward Luong, Cory Hill, Kwong-Kit Choi, Arvind D'Souza, Christopher Masterjohn
2019 IEEE RESEARCH AND APPLICATIONS OF PHOTONICS IN DEFENSE CONFERENCE (RAPID)
(2019)
Proceedings Paper
Remote Sensing
Robert Wright, Miguel Nunes, Paul Lucey, Luke Flynn, Sarath Gunapala, David Ting, Sir Rafol, Alexander Soibel, Chiara Ferrari-Wong, Andrea Gabrieli, Thomas George
CUBESATS AND SMALLSATS FOR REMOTE SENSING III
(2019)
Proceedings Paper
Remote Sensing
Sarath Gunapala, Sir Rafol, David Ting, Alexander Soibel, Arezou Khoshakhlagh, Sam Keo, Brian Pepper, Anita Fisher, Edward Luong, Cory Hill, Kwong-Kit Choi, Arvind D'Souza, Christopher Masterjohn, Sachidananda Babu, Parminder Ghuman
IMAGE SENSING TECHNOLOGIES: MATERIALS, DEVICES, SYSTEMS, AND APPLICATIONS VI
(2019)
Proceedings Paper
Engineering, Electrical & Electronic
David Z. Ting, Alexander Soibel, Arezou Khoshakhlagh, Sam A. Keo, B. Rafol, Anita M. Fisher, Cory J. Hill, Edward M. Luong, Brian J. Pepper, Sarath D. Gunapala
INFRARED TECHNOLOGY AND APPLICATIONS XLV
(2019)
