Applied Physics Letters
Articles in this Issue
Role of TiO2 as a cathode buffer layer for minimizing electron injection barrier at the Co/Alq3 interface
This work highlights the important role of a titanium dioxide (TiO2) cathode buffer layer in enhancing charge injection at the cobalt (Co)/tris(8-hydroxyquinolinato) aluminum (Alq3) interface—an impor...
Nonvolatile regulation of room-temperature electronic properties of Cr:In2O3 thin films by ferroelectric polarization charge and light illumination
Reversible and nonvolatile manipulation of physical properties has attained significant attention due to its potential applications in the memory industry, leveraging intrinsic physical phenomena. Her...
Two-dimensional metals thickness scaling effect on electrical contact in metal–semiconductor junctions: Carrier transport and ultrafast dynamics study
Two-dimensional (2D) van der Waals metal–semiconductor junctions (MSJs) with low-resistance contacts have great potential for designing high-performance electronic and optoelectronic devices. However,...
Anomalous valley Hall effect in two-dimensional multiferroic V2N2O semiconductor
Intrinsic ferromagnetism, with coexisting ferroelectric and ferrovalley polarizations in a single two-dimensional semiconductor, is highly desirable for developing next-generation multifunctional nano...
High-performance self-powered MoS1.2Se0.8 lateral homojunction photodetector with broadband spectrum response
Self-powered photodetector plays a key role in lower power consumption operation in the next-generation optoelectronic system. In recent years, two-dimensional (2D) materials van der Waals lateral hom...
Enhancement of surface acoustic wave amplification by drifting electrons in graphene under microwave irradiation
This paper analyzes the effect of microwave irradiation on the amplification of surface acoustic waves (SAWs) by drifting electrons in graphene. An expression is obtained for the SAW gain G as a funct...
Tracking polarons in real space by STM/AFM
While the concept of polaron was formulated almost a century ago, this topic has been gradually emerging in many fields in physics, chemistry, and materials science. Polarons, i.e., charge carriers th...
Structural landscape of two-dimensional phases in group II–VI semiconductors
Group II–VI semiconductors, renowned for their direct band gaps, high carrier mobilities, and mature synthesis, are essential in optoelectronic applications. While scaling down to the two-dimensional...
Enhancement of magnon transport length in easy-plane antiferromagnets
Long-distance magnon transport in antiferromagnets is crucial for developing future magnon-based devices with high speed, density, and stability. However, the magnon decay length remains limited in ea...
A ultra-high-temperature free-piston thermoacoustic Stirling heat pump capable of achieving above 200 °C
This study proposes and develops a prototype of a double-acting free-piston thermoacoustic Stirling ultra-high-temperature heat pump with bidirectional power flow regulation. By adjusting the phase re...
Effects of high-temperature annealing on electrical properties of Si-doped <b> <i>β</i> </b>-Ga2O3 thin films grown by low-pressure hot-wall MOCVD
Electrical properties of Si-doped Ga2O3 (010) homoepitaxial thin films grown by low-pressure hot-wall metalorganic chemical vapor deposition (MOCVD) and the effects of high-temperature post-deposition...
A dibenzothiophene-based cross-linked hole transport material for high-performance blue quantum dot light emitting diodes
Quantum dot light emitting diodes (QLEDs) have become a promising technology for next generation displays due to their outstanding photometric performance. Cross-linked hole transport materials (HTMs)...
Optical phonon-driven modulation of interlayer thermal transport in stacked diamane
In this work, we systematically investigate the cross-plane thermal conductivity in stacked diamane via molecular dynamics simulations, focusing on the effects of stacking orientation, external pressu...
Fast ionic conductivity by thermal treatment with ultralow electronic transport in solid-state electrolyte Na3YCl6
Improving the ionic and electronic conductivities of solid-state electrolytes (SSEs) is urgently needed to develop commercially viable all-solid-state batteries. Here, we provide atomistic insights in...
MoSi2N4/MoGe2N4 heterojunction: A theoretical exploration for high-efficiency excitonic solar cell and visible-light photohydrolytic catalyst
Solar cells and photocatalytic water splitting are both viable, environmentally friendly strategies for producing sustainable energy. However, the utilization of freestanding monolayer is typically li...
Two-dimensional GeSe-based photodetector with ultra-broadband and polarized light detection
Two-dimensional materials (2D) with internal structural anisotropy have shown great promise in polarized light detection. The typical 2D anisotropy materials, e.g., black phosphorus (BP), is unstable...
Remarkable thermal hysteresis of thermal conductivity in nearly freestanding VO2 nanowire across the phase transition
The thermal conductivity of a nearly freestanding VO2 nanowire was measured in the vicinity of phase transition temperature using thermal bridge method. It was discovered that the thermal conductivity...
Ferroelectricity of wurtzite Be1−<i>x</i>Mg<i>x</i>O from first-principles calculation
Nitride ferroelectrics such as Al1−xScxN are emerging as promising ferroelectrics for nonvolatile memory technologies due to their high thermal stability and large remnant polarization. However, their...
Surface-enhanced Raman scattering for biosensing and early diagnosis
Biosensing plays a crucial role in precision biomarker detection, enabling real-time monitoring and physiological health analysis, particularly in early diagnosis. Traditional biosensing techniques, s...
High capacitance behavior in Sr0.6Ba0.4Nb2O6-based tungsten bronze ferroelectrics
Dielectric capacitors with superior energy storage performance are attracting growing attention due to ultrahigh power density and rapid charge/discharge speed. In this work, perovskite Sr0.6Ba0.4TiO3...
Monolithic integrated <b> <i>β</i> </b>-Ga2O3 inverters using charge trapping technique
In this work, high-performance monolithic integrated β-Ga2O3 inverters are proposed, in which the enhancement mode (E-mode) devices are implemented using a charge trapping layer (CTL) technique. Lever...
Chemical solution-immersion deposition of BiFeO3 films reduced to nanometer thickness with stabilized polarization
Bismuth ferrite (BiFeO3, BFO), a representative ferroelectric material exhibiting multiferroic characteristics at ambient temperature and demonstrating reversible polarization under external electric...
Dipole-molecular buffer interface engineering for mitigating hole injection barrier and interface defect in high-efficiency quasi-2D blue perovskite light-emitting diodes
The quasi-two-dimensional (quasi-2D) perovskites, characterized by strong quantum confinement and high exciton binding energy, hold significant promise for blue perovskite light-emitting diodes (PeLED...
Observation of excess polar magneto-optical Kerr effect signals in asymmetric Co/Tb-multilayers
We study the magneto-optical properties of asymmetric Co/Tb-multilayers that are designed to exhibit considerable Dzyaloshinskii–Moriya interaction (DMI) and low levels of effective perpendicular magn...
Observation of anti-Stokes-fluorescence cooling in commercial Yb-doped silica fibers
Optical cooling of Yb-doped silica fibers using anti-Stokes fluorescence (ASF) has emerged as a powerful technique to produce fiber lasers and amplifiers that generate no heat. This paradigm offers an...