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Polarization-Sensitive Solar-Blind Ultraviolet Photodetectors Based on Semipolar (112̅2) AlGaN Film.
ACS Appl Mater Interfaces
January 2025
Research and Development Center for Wide Bandgap Semiconductors, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China.
Wide bandgap semiconductor AlGaN alloys have been identified as key materials to fabricate solar-blind ultraviolet photodetectors (SBUV PDs). Herein, a self-driven SBUV polarization-sensitive PD (PSPD) based on semipolar (112̅2)-oriented AlGaN films is reported. Using the flow-rate modulation epitaxy method, the full widths at half maximum (FWHMs) for the obtained (112̅2) AlGaN along [112̅3̅] and [11̅00] rocking curves are 0.
View Article and Find Full Text PDFAu-In Alloy for Excellent Ohmic Contact in GeSe Devices with Enhanced Photodetector Properties.
ACS Appl Mater Interfaces
January 2025
Key Laboratory of MEMS of Ministry of Education, School of Integrated Circuits, Southeast University, Nanjing 210096, China.
Metal-semiconductor contact plays a significant role in devices such as transistors, photoemitters, and photodetectors. Here, the AuIn alloy contact gives a state-of-the-art low (contact resistance) in GeSe devices. The of GeSe-AuIn is measured to be 25 kΩ μm under channel carrier concentration around = 2.
View Article and Find Full Text PDFConditions favoring phagotrophy can lead to larger cell sizes in some freshwater mixoplankton.
J Plankton Res
January 2025
Department of Biological Sciences, University of Quebec at Montréal (UQAM), C.P. 8888 Succ. Centre-Ville, Montréal, QC, H3P 3P8, Canada.
Cell size is a critical regulator of many metabolic processes in protists. We explored whether body size and abundances vary consistently in phytoplankton capable of both autotrophy and heterotrophy (mixoplankton) by manipulating environmental stoichiometric conditions in a mesocosm experiment. We applied two allochthonous subsidy treatments: high C: nutrient ratios (leaves) should favour bacterivory through phagotrophy, while low ratios (insects) should favour autotrophy.
View Article and Find Full Text PDFElectrochemical Cycling of Liquid Organic Hydrogen Carriers as a Sustainable Approach for Hydrogen Storage and Transportation.
ACS Sustain Chem Eng
January 2025
Department of Chemical Engineering, The City College of New York, CUNY, New York, New York 10031, United States.
Hydrogen (H), as a high-energy-density molecule, offers a clean solution to carry energy. However, the high diffusivity and low volumetric density of H pose a challenge for long-term storage and transportation. Liquid organic hydrogen carriers (LOHCs) have been suggested as a strategic way to store and transport hydrogen in stable molecules.
View Article and Find Full Text PDFEnhancing Thermogalvanic Efficiency through Electrostatic Interaction in Cationic Hydrogels.
ACS Appl Energy Mater
January 2025
Instituto Regional de Investigación Científica Aplicada (IRICA), Universidad de Castilla-La Mancha, Ciudad Real E-13071, Spain.
Thermoelectric hydrogels have the potential to be used in energy conversion devices for harnessing ubiquitous low-grade heat and generating useful electricity. This can be achieved through the use of thermogalvanic cells based on redox chemistry. While significant attention has been focused toward maximizing voltage for a given temperature gradient in liquid-based thermocells, it is crucial to consider both voltage and current density for accurate power output estimation in the case of gel-based thermocells.
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