Applied Physics Letters
Articles in this Issue
Interface engineering with an rGO electron extraction layer for high-efficiency and stable Cu2ZnSnS4-based photocathode
The practical application of Cu2ZnSnS4 (CZTS)-based photocathodes is hindered by severe charge recombination and insufficient charge transport capability. Herein, we demonstrate a high-performance Pt/...
Transmission diffuse EUV scattering by nanoscale Lamb waves in thin membranes
We report time-resolved diffuse extreme ultraviolet (EUV) scattering measurements of optically excited acoustic waves in thin Ti/SiN bilayers in transmission geometry. Following femtosecond optical ex...
Optimized Nb-doped SnO2 buffer layer for enhanced carrier extraction and Sb2S3 photovoltaic responses
Crystal vertical orientation, deep-level traps, interface charge non-radiative recombination, etc., for Sb2S3 solar cells are the main factors that constrain its optoelectronic performance. Suitable e...
Exceptionally high thermoelectric power factors at low temperatures in heavily doped p- and n-type Ge-rich Ge1−xSnx films
Low-temperature thermoelectric thin films compatible with semiconductor technology are of increasing interest for cryogenic energy harvesting and thermal management of advanced Si-based electronics. H...
Unlocking room-temperature magnetoelectricity in Ba1.5Sr1.5-based Z-type hexaferrites via magnetic anisotropy modulation
Current research on room-temperature magnetoelectric (ME) Z-type hexaferrites has predominantly centered on modifications based on Sr3Co2Fe24O41, which severely restricts the compositional freedom for...
Chirality-induced spin-regulated synaptic dynamics in 2D perovskite memristors for polarimetric neuromorphic computing
Conventional von Neumann architectures face fundamental energy-efficiency bottlenecks, while current optoelectronic neuromorphic devices remain confined to simple optoelectronic responses, unable to l...
Rebound dynamics of polymer drops impacting on soft solids at low Weber numbers
The impact of polymer drops on soft solid substrates occurs frequently in engineering applications such as inkjet printing and pesticide spraying. Here, we investigate how substrate elasticity and pol...
Coherent control of solid-state defect spins via patterned boron-doped diamond circuit
We demonstrate the coherent control of nitrogen-vacancy (NV) spins using an electronic circuit integrated within diamond: a patterned, conductive boron-doped diamond (BDD) microwave waveguide. First,...
Allocation of Peltier heating–cooling through the anomalous Hall effect
We report the observation of a spatial allocation of Peltier-effect-induced temperature modulation through the anomalous Hall effect (AHE) in a hybrid system comprising a magnetic metal and a thermoel...
Generation of ultraviolet optical vortex beams with independently controlled topological charge and central wavelength
The development of ultraviolet (UV) optical vortex beams is critical for advancing nanoscale photonic applications; however, it has long been hindered by fundamental limitations in high-performance UV...
Domain switching-induced large rigid shift of the bulk photovoltaic effect in (111)-oriented BiFeO3 epitaxial films
The bulk photovoltaic effect (BPVE) in ferroelectric materials exhibits intrinsic sensitivity to light polarization, offering opportunities for self-powered polarization photodetection. However, the i...
Optoelectronic performance enhancement of 1–5 <i>μ</i> m InGaN-based micro-LEDs using chemical etching coupled with dielectric passivation
Although InGaN-based micro-light-emitting diodes (micro-LEDs) have been extensively studied as key components for next-generation display technologies, the performance of micro-LEDs smaller than 5 μm...
Gate tunable photodetection and imaging in WS2 phototransistors enabled by a lithium niobate functional substrate
Heterogeneous integration with two-dimensional materials offers a promising route to address the photoelectric conversion challenges of lithium niobate (LiNbO3, LN). However, previous works have mostl...
5–24 GHz high <i>f-Q</i> product multi-mode surface acoustic wave resonances in LiNbO3/SiC heterostructures
This work reports multi-mode surface acoustic wave resonances in a lithium niobate on silicon carbide (LiNbO3/SiC) heterostructure, achieving high resonant frequency-quality factor (f-Q) products over...
Molecular beam epitaxy and characterization of wurtzite LaAlN
We report the molecular beam epitaxy and structural characterization of single-phase wurtzite LaxAl1−xN thin films, with a La composition as high as x=0.20. In situ reflection high-energy electron dif...
Ablation removal of transport-blocking defects in surface-electrode ion traps
We demonstrate in situ removal of a transport-blocking defect on a surface-electrode ion trap device using a Q-switched Nd:YAG 532 nm pulsed ablation laser. This approach eliminates the need to vent a...
Neural synaptic functions of Pt/NSTO/In self-rectifying memristors with Schottky barriers
Memristors with self-rectifying properties are capable of suppressing sneak currents in crossbar arrays and become a key component for constructing artificial synapses. Their performance usually depen...
Interface-abruptness-limited physics in AlGaN UV-B laser diodes
AlGaN-based ultraviolet-B (UV-B) laser diodes have recently shown improved performance through low-temperature metal-organic vapor phase epitaxy growth; however, the dominant physical mechanism remain...
Lithography-free patterning of SrTiO3-based two-dimensional electron gases using direct atomic layer processing
We present a scalable and lithography-free strategy for the realization of a two-dimensional electron gas (2DEG) in TiO2-patterned SrTiO3 (100) via Al deposition using magnetron sputtering. A 15 nm th...
Activating catalytically inert Janus diamane for efficient water splitting via 2D type-II C4HF/ <i>h</i> -BN heterostructures
We propose a two-dimensional (2D) type-II van der Waals heterostructure by vertically stacking Janus diamane C4HF with monolayer h-BN for efficient photocatalytic water splitting. While C4HF is cataly...
Detection of vortex beams with the orbital angular momentum by using plasmonic nanoparticles
Vortex beams with orbital angular momentum (OAM) have many advantages in optical communications, such as high-capacity communication, communication under extreme circumstances, high-security communica...
Photoacoustic viscoelasticity imaging of thin-cap fibroatheromas: Implications for detecting vulnerable plaques
Viscoelasticity is a key mechanical property for assessing the vulnerability of atherosclerotic plaques. In this Letter, we propose photoacoustic viscoelasticity imaging (PAVEI) to provide morphologic...
Single-gate graphene thermopiles enabled by locally Al-modified graphene legs on PET substrates
We report a simplified graphene thermopile architecture fabricated on PET substrates. Conventional single-material graphene thermopiles typically require independent electrostatic control of the two t...
Anisotropic cation migration and strain driving compositional segregation in FACsPbI3
Formamidinium-cesium lead iodide (FACsPbI3) is among the most promising absorber materials for high-efficiency perovskite solar cells, and A-site cation mixing of FA and Cs represents a crucial strate...
Equilibrium kink-like torsion deformation of a magnetoactive elastomer under a magnetic field
A novel effect involving the formation of a stable kink-like torsion deformation in a magnetoactive elastomer (MAE) beam subjected to a uniform magnetic field is theoretically predicted and experiment...