Applied Physics Letters
Articles in this Issue
Modulation of charge transport and rectification behavior in CsSnI3 thin films through A-site cation engineering
CsSnI3 perovskite is a thin-film semiconductor with high intrinsic conductivity for various device applications (thermoelectric, photovoltaics, etc.). Stoichiometric CsSnI3 has high-density defects an...
Versatile confocal microscopy for imaging objects oscillating at frequencies exceeding the frame rate
Confocal microscopy typically has a low frame rate but allows high-resolution imaging deep within objects. We developed a versatile method to capture confocal images of periodically moving objects at...
Angle-independent coupling between topological interface states and Tamm states in photonic crystal heterostructures with hyperbolic metamaterials
In this study, we report an angle-independent coupling mechanism between topological interface states and Tamm plasma polaritons within a photonic crystal heterostructure with hyperbolic metamaterials...
Efficient spin transmission of Ti spacer for magnetic heterostructures with perpendicular magnetic anisotropy
Perpendicular magnetization switching induced by spin–orbit torque (SOT) in spin source metals/ferromagnetic material heterostructures is of fundamental interest for developing next-generation magneti...
All-dielectric quasi-BIC metasurface with strong coupling control by adjusting the loss—potential for vibrational strong coupling
Vibrational strong coupling (VSC) has promising applications in chemical reactions, molecular spectroscopy, and biochemical sensing. VSC can be achieved using plasma nanostructures. However, effective...
Engineered MoSe2-CuO interfaces for next-generation non-enzymatic glucose sensors
The development of highly sensitive, stable, and cost-effective glucose sensors is critical for non-enzymatic glucose detection. Traditional enzymatic sensors suffer from poor stability and operationa...
Fabrication and performance of CsPbBr3 single crystal for x-ray photon-counting imaging
Semiconductor x-ray photon-counting imaging sensors are the core components of photon-counting computed tomography (PCCT) equipment, which requires a semiconductor crystal with a high atomic number, a...
A back-to-back structured bionic visual sensor for adaptive perception
With the rapid development of artificial intelligence technology, traditional machine vision systems are facing challenges due to high power consumption, high latency, and low efficiency of redundant...
Femtosecond laser architectured alcohol-driven rapid Marangoni swimmer
Bionic designs that mimic insects' utilization of the Marangoni effect for rapid movement on water surfaces have garnered significant attention in recent years due to their critical applications in mi...
Dopant concentration-induced carrier conduction dynamics in manganese-doped perovskite quantum dots
Achieving optimal performance in any optoelectronic device requires precise control of charge carrier generation and their efficient transport with minimal energy losses. In this Letter, we study the...
Tacticity-dependent thermal conductivity of single polymer chains
While the effect of polymer chain tacticity on crystallinity, glass transition dynamics, and viscoelastic coefficients has been studied, its impact on thermal transport is unknown. Here, molecular dyn...
Fast-response low-power atomic oven for integration into an ion microchip
We present a microfabricated neutral atom source for quantum technologies that can be easily integrated onto microchip devices using well-established micro-electromechanical systems fabrication techni...
Unveiling the large polarons in antiperovskite X3NA (X2+ = Mg2+, Ca2+, Sr2+; A3− = P3−, As3−, Sb3−, Bi3−)
Antiperovskites have emerged as promising candidates for optoelectronic devices due to their remarkable structural tunability and diverse physicochemical properties. Carrier transport characteristics...
VX2 (X = S, Se, Te) monolayers: Intrinsic quantum anomalous Hall insulator with high Curie temperature and large gap
Two-dimensional (2D) magnetic materials have flourished to date, with ferromagnetic (FM) materials providing a broad platform for exploring the novel quantum anomalous Hall (QAH) effect. However, the...
Determination of AlP/GaP band offset considering conduction-band non-parabolicity of GaP and change in exciton-binding energies
The well-width (Lz) dependence of photoluminescence (PL) from staggered type-II aluminum phosphide/gallium phosphide (AlP/GaP) indirect-gap quantum wells (QWs) was investigated for determining the AlP...
Parametric metasurfaces for amplified upconversion of electromagnetic waves
Spatiotemporal metasurfaces, characterized by dynamic variations in both space and time, enable functionalities unattainable with passive metasurfaces. In this study, we propose a concept of parametri...
High-performance multifunctional solar-blind photodetector based on Gd-doped perovskite rare-earth nickelate heterojunctions
Solar-blind photodetectors based on wide bandgap semiconductors have attracted great interest in recent years. Perovskite rare-earth nickelates are stable p-type semiconductors with adjustable physica...
High-performance room temperature InP/InGaAs single-photon detector made by a single diffusion process
Traditional InP/InGaAs single-photon avalanche detectors require cooling to approximately 240 K to reduce dark counts, necessitating the use of semiconductor thermoelectric cooling, which increases bo...
Engineering stable and efficient CsPbBr3 nanocrystals via K+ and Mn2+ co-doping for advanced LED and imaging application
All-inorganic CsPbBr3 nanocrystals (CNCs) show great potential in backlight WLEDs and anti-counterfeiting. In this study, structural and compositional analyses including x-ray diffraction, transmissio...
A robust and flexible wearable hydrogel thermocell driven by body heat fabricated by a one-step process at room temperature
Emerging flexible hydrogel thermocells (HTCs), which leverage thermoelectric (TE) technology, convert body heat into electricity and provide new opportunities for wearable electronics due to their hig...
Photonic negative differential thermal conductance enabled by NIS junctions
Due to their sensitivity to temperature variations, normal metal–insulator–superconductor (NIS) junctions are utilized in various thermal devices. This study illustrates that two NISIN reservoirs can...
Synergistic crystallization and defect passivation via eco-friendly anti-solvent additives for air-processed high-performance perovskite solar cells
High-quality perovskite films with lower defect density are a prerequisite for realizing high-performance perovskite solar cells. However, the inherent soft lattice properties of perovskites often lea...
Upper coherent interlayers using Cl-SnO2 for improved charge dynamics and efficient inverted perovskite photovoltaics
In recent years, inverted perovskite solar cells (IPVSCs) with a p–i–n structure have attracted widespread attention because of their easy fabrication, cost-effectiveness, suppressed hysteresis, super...
Resonant excitation of a thin waveguide with an elliptical reflector for high-power ultrasound (ELIPS)
High-power ultrasound plays a critical role in various applications, yet generating multi-frequency ultrasound in a localized area with a single transducer remains a significant challenge. We propose...
Van der Waals epitaxy of (BA)2PbI4/WSe2 heterostructures with strong interlayer exciton emission
Van der Waals (vdW) epitaxy enables tailored excitonic interactions and charge separation in two-dimensional (2D) perovskite heterostructures, addressing optoelectronic integration challenges. Utilizi...