Article
Physics, Applied
Philip C. Klipstein
Summary: In a photodiode made from a narrow bandgap III-V material such as InSb, the dominant dark current mechanism is thermal generation-recombination in the depletion region. XBn or XBp barrier detectors suppress the generation-recombination current by using a wide bandgap barrier material. Diffusion limited barrier detectors have a unity gain device architecture that is fundamentally different from traditional photodiodes. High performance barrier detector arrays for mid- and long-wave infrared detection have been developed using bulk alloy and type II superlattice (T2SL) absorbers.
APPLIED PHYSICS LETTERS
(2022)
Article
Physics, Applied
Yi Zhang, Xuguang Jia, Shuang Liu, Kefan Wu, Jiayu Zhang, Gavin Conibeer
Summary: Studies show that slowing down carrier intervalley scattering can extend the carrier lifetime, while slowing down the thermalization rate within the gamma valley is mainly influenced by the phonon bottleneck effect. However, the correlation between slowing down carrier relaxation rate through IVS and PBE remains unclear.
JOURNAL OF APPLIED PHYSICS
(2021)
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, Physical
Jun Zhao, Hui Zeng, Ge Yao
Summary: Using first principles calculations, a new polymorph of 2D III-V group materials was designed with excellent structural, electronic, and optical properties. These materials exhibit high dynamic stability, anisotropic conductivity, and absorbance, making them potential candidates for applications in solar cells.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Physical
Yan Zhu, Thorsten Trupke, Ziv Hameiri
Summary: This study introduces a dynamic calibration method for injection-dependent carrier lifetime measurements, which compares lifetime measurements under quasi-steady-state and non-quasi-steady-state conditions to achieve precise calibration of experimental data and provide the net bulk doping concentration.
Article
Chemistry, Physical
Chaojie Li, Jiyou Zhong
Summary: A novel Cr3+-doped garnet phosphor Y3In2Ga3O12:Cr3+ is discovered, which can emit broadband NIR light upon 450 nm excitation. This material exhibits high efficiency and thermal stability, and the NIR pc-LED device fabricated using it shows better performance than devices made from other reported NIR materials.
CHEMISTRY OF MATERIALS
(2022)
Article
Physics, Applied
Rigo A. Carrasco, Christian P. Morath, Julie V. Logan, Kevin B. Woller, Perry C. Grant, Haylie Orozco, Marko S. Milosavljevic, Shane R. Johnson, Ganesh Balakrishnan, Preston T. Webster
Summary: In this study, quinary GaInAsSbBi alloy was successfully grown by molecular beam epitaxy, and its optoelectronic properties were characterized. The experimental results show that the alloy has a small bandgap energy and a long minority carrier lifetime, indicating its potential for applications in infrared optoelectronic devices.
APPLIED PHYSICS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Ching-An Chuang, Feng-Han Yu, Bo-Xian Yeh, Anna Milatul Ummah, Adzilah Shahna Rosyadi, Ching-Hwa Ho
Summary: Near-band-edge emissions from red to blue colors have been detected in full-series GaSe1-xSx multilayers. The crucial phase responsible for direct recombination and emission of free excitons within the visible range is identified as the & epsilon;-stacked phase. The multilayer GaSe1-xSx represents a well-suited 2D chalcogenide series for emitting full-color visible light.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Physics, Applied
Marten Koopmansa, L. Jan Anton Kosterb
Summary: Doping has a significant impact on the Seebeck coefficient in organic semiconductors, with high carrier-carrier interactions reducing the Seebeck coefficient. Reducing these interactions can lead to an increased Seebeck coefficient and power factor, potentially increasing the ZT value above 1 for organic thermoelectrics.
APPLIED PHYSICS LETTERS
(2021)
Review
Materials Science, Multidisciplinary
Peng Hu, Xuexia He, Hui Jiang
Summary: Organic semiconductors are attracting attention for their advantages such as low-temperature processing ability, low fabrication cost, and flexibility. Studying high charge carrier mobility organic semiconductors with a mobility higher than 10 cm(2) V-1 s(-1) is crucial for future commercial microelectronic applications. Progress in discovering novel organic molecules and improving device fabrication technology has led to some organic molecules breaking existing knowledge limitations and demonstrating very high mobilities.
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
Chemistry, Multidisciplinary
Qi Sun, Jiajun Ren, Tong Jiang, Qian Peng, Qi Ou, Zhigang Shuai
Summary: Through a localized coupling model, it has been demonstrated that the formation of a bright S-1 state in H-aggregate is due to the coupling between the low-lying intermolecular charge-transfer state and the upper bright Frenkel exciton, with the condition that the electron and hole transfer integrals are notably larger than the excitonic coupling. This theoretical finding not only explains recent experimental results but also provides insight into the compatibility between strong luminescence and high charge mobilities, which is important for OLETs and electrically pumped lasing.
Article
Engineering, Electrical & Electronic
Tadao Ishibashi, Hiroshi Ito
Summary: This article provides a brief review of the development of uni-traveling carrier photodiodes over the past 25 years, focusing on the key design in their structure. Monte Carlo simulation and experimental results reveal the diffusive nature of electrons even in high quasi-fields. Output linearity is carefully examined, and it is found that the first stage of saturation is influenced by the linearly changing space charge density with operation current. In scaling down UTC-PD for faster operations, the space-charge effect is not significant, but junction self-heating imposes limitations.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2022)
Article
Chemistry, Physical
Yoon-Seo Kim, Hye-Jin Oh, Junghwan Kim, Jun Hyung Lim, Jin-Seong Park
Summary: In this study, a single-crystal-like indium-gallium-zinc-oxide (IGZO) layer was synthesized using plasma-enhanced atomic layer deposition and stable IGZO transistors with an ultra-high mobility were fabricated. The plasma power of the reactant was controlled as an effective processing parameter by evaluating and understanding the effect of the chemical reaction of the precursors on the behavior of the residual hydrogen, carbon, and oxygen in the as-deposited films. This study found a critical relationship between the optimal plasma reaction energy, superior electrical performance, and device stability.
Article
Chemistry, Multidisciplinary
Sikang Zheng, Shijuan Xiao, Kunling Peng, Yu Pan, Xiaolong Yang, Xu Lu, Guang Han, Bin Zhang, Zizhen Zhou, Guoyu Wang, Xiaoyuan Zhou
Summary: A route is proposed based on crystal symmetry arguments to facilitate the charge transport of quasi-2D semiconductors. It is found that the horizontal mirror symmetry can eliminate the electron-phonon coupling strength mediated by phonons with purely out-of-plane vibrational vectors in quasi-2D systems. In ZrBeSi-type quasi-2D systems, the representative sample Ba1.01AgSb shows a record high room-temperature hole mobility of 344 cm(2)V-1s-1 and an excellent p-type zT value of approximately 1.3 at 1012 K due to the intrinsic low thermal conductivity.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Hsin-Ping Wang, Carolin M. Sutter-Fella, Peter Lobaccaro, Mark Hettick, Maxwell Zheng, Der-Hsien Lien, D. Westley Miller, Charles W. Warren, Ellis T. Roe, Mark C. Lonergan, Harvey L. Guthrey, Nancy M. Haegel, Joel W. Ager, Carlo Carraro, Roya Maboudian, Jr-Hau He, Ali Javey
CHEMISTRY OF MATERIALS
(2016)
Article
Energy & Fuels
John Simon, Kevin L. Schulte, David L. Young, Nancy M. Haegel, Aaron J. Ptak
IEEE JOURNAL OF PHOTOVOLTAICS
(2016)
Editorial Material
Optics
Sarah Kurtz, Nancy Haegel, Ronald Sinton, Robert Margolis
Editorial Material
Multidisciplinary Sciences
Nancy M. Haegel, Robert Margolis, Tonio Buonassisi, David Feldman, Armin Froitzheim, Raffi Garabedian, Martin Green, Stefan Glunz, Hans-Martin Henning, Burkhard Holder, Izumi Kaizuka, Benjamin Kroposki, Koji Matsubara, Shigeru Niki, Keiichiro Sakurai, Roland A. Schindler, William Tumas, Eicke R. Weber, Gregory Wilson, Michael Woodhouse, Sarah Kurtz
Article
Energy & Fuels
Chuanxiao Xiao, Chun-Sheng Jiang, John Moseley, John Simon, Kevin Schulte, Aaron J. Ptak, Steve Johnston, Brian Gorman, Mowafak Al-Jassim, Nancy M. Haegel, Helio Moutinho
Article
Energy & Fuels
Nancy M. Haegel, Chi-Wen Ke, Hesham Taha, Harvey Guthrey, Christopher M. Fetzer, Richard R. King
IEEE JOURNAL OF PHOTOVOLTAICS
(2017)
Review
Physics, Applied
T. Coenen, N. M. Haegel
APPLIED PHYSICS REVIEWS
(2017)
Article
Nanoscience & Nanotechnology
Deborah L. McGott, Michael D. Kempe, Stephen Glynn, Nick Bosco, Teresa M. Barnes, Nancy M. Haegel, Colin A. Wolden, Matthew O. Reese
ACS APPLIED MATERIALS & INTERFACES
(2018)
Article
Energy & Fuels
Matthew O. Reese, Stephen Glynn, Michael D. Kempe, Deborah L. McGott, Matthew S. Dabney, Teresa M. Barnes, Samuel Booth, David Feldman, Nancy M. Haegel
Editorial Material
Multidisciplinary Sciences
Nancy M. Haegel, Harry Atwater, Teresa Barnes, Christian Breyer, Anthony Burrell, Yet-Ming Chiang, Stefaan De Wolf, Bernhard Dimmler, David Feldman, Stefan Glunz, Jan Christoph Goldschmidt, David Hochschild, Ruben Inzunza, Izumi Kaizuka, Ben Kroposki, Sarah Kurtz, Sylvere Leu, Robert Margolis, Koji Matsubara, Axel Metz, Wyatt K. Metzger, Mahesh Morjaria, Shigeru Niki, Stefan Nowak, Ian Marius Peters, Simon Philipps, Thomas Reindl, Andre Richter, Doug Rose, Keiichiro Sakurai, Rutger Schlatmann, Masahiro Shikano, Wim Sinke, Ron Sinton, B. J. Stanbery, Marko Topic, William Tumas, Yuzuru Ueda, Jao van de lagemaat, Pierre Verlinden, Matthias Vetter, Emily Warren, Mary Werner, Masafumi Yamaguchi, Andreas W. Bett
Article
Materials Science, Multidisciplinary
Chuanxiao Xiao, Chun-Sheng Jiang, Jun Liu, Andrew Norman, John Moseley, Kevin Schulte, Aaron J. Ptak, Brian Gorman, Mowafak Al-Jassim, Nancy M. Haegel, Helio Moutinho
MICROSCOPY AND MICROANALYSIS
(2019)
Editorial Material
Materials Science, Multidisciplinary
Sarah R. Kurtz, Ashling (Mehdi) Leilaeioun, Richard R. King, Ian Marius Peters, Michael J. Heben, Wyatt K. Metzger, Nancy M. Haegel
Article
Chemistry, Multidisciplinary
Chuanxiao Xiao, Chun-Sheng Jiang, Kevin Blaine, Mahisha Amarasinghe, Eric Colegrove, Wyatt K. Metzger, Mowafak M. Al-Jassim, Nancy M. Haegel, Helio Moutinho
CELL REPORTS PHYSICAL SCIENCE
(2020)
Article
Electrochemistry
Trent R. Northen, Nancy Haegel, Daniel Sinars, Johney Green, Dawn Wellman, Daniel T. Schwartz
ELECTROCHEMICAL SOCIETY INTERFACE
(2019)
Article
Chemistry, Multidisciplinary
Prashun Gorai, Robert W. McKinney, Nancy M. Haegel, Andriy Zakutayev, Vladan Stevanovic
ENERGY & ENVIRONMENTAL SCIENCE
(2019)