Applied Physics Letters
Articles in this Issue
Intrinsic vibration regulation of piezoelectric bone conduction devices: Dynamic damping control via shear-thickening fluids
To address the challenges of uneven frequency response and pronounced resonance peaks in piezoelectric bone conduction devices—particularly at mid-to-high frequencies, which contribute to a perceptual...
Synergistic ion beam engineering of high-performance spin–photon interfaces in hexagonal boron nitride
Deterministically coupling spin defects to optical microcavities is critical for scalable quantum sensing yet remains a fabrication bottleneck. Here, we demonstrate the deterministic integration of ne...
Observation of anomalous Hall effect in a new noncoplanar antiferromagnetic structure
Antiferromagnets (AFMs) have garnered significant interest as promising candidates for next-generation spintronic devices. However, the readout of AFMs is a core issue due to their negligible net magn...
Superradiance in GaN-(Al,Ga)N resonant Bragg structures with single and double quantum wells in the unit supercell
We demonstrate the effect of superradiant exciton–polariton mode formation at room temperature in the reflection spectra from resonant Bragg structures (RBSs) composed of GaN quantum wells (QWs) separ...
Single-event robustness under pulsed voltage stress and gate degradation under negative gate bias in hybrid-drain gate injection transistors (HD-GITs)
This Letter investigates the single-event effect (SEE) hardness of hybrid-drain gate injection transistors (HD-GITs) under heavy-ion irradiation with pulsed stepping voltage stress. HD-GITs under test...
Adaptive photodetector with dual-freedom spectral reconfigurability for on-chip multispectral systems
Conventional spectrally reconfigurable systems for dynamic optical information processing suffer from inherent limitations, including bulky optical components and constrained control flexibility. Here...
Electrically pumped AlGaN edge-emitting UV-B laser diodes grown by molecular beam epitaxy
Mid and deep ultraviolet (UV) laser diodes remain among the least explored devices in semiconductor optoelectronics, despite their importance for spectroscopy, biochemical sensing, disinfection, and e...
A comprehensive investigation of the underlying mechanism for total-ionizing-dose effects in a-InGaZnO TFTs with varied channel thicknesses
This study systematically investigates the role of channel thickness (tIGZO) in the total-ionizing-dose (TID) response of a-IGZO thin-film transistors (TFTs). During irradiation, positive charges trap...
Monte Carlo transport simulation of phonons in diamond
In this paper, we investigate the degradation of the thermal conductivity of diamond due to the presence of the isotope 13C. We employ a full-band Monte Carlo simulation in which phonons are modeled a...
Mitigation energy loss with fullerene derivatives doping regulation for efficient tin perovskite solar cells
Halide tin-based perovskites have gradually emerged as one of the most competitive candidates for lead-free perovskite photovoltaics owing to their superior optoelectronic properties and low toxicity....
Anisotropic dielectric function of graphite probed by far- and near-field spectroscopies
Graphite is a cornerstone material for novel technologies, from energy storage to two-dimensional materials. Despite its foundational role, the predictive power required for engineering emergent optic...
Impact of scandium substitution on the second-order nonlinearity of epitaxial aluminum nitride thin films
Given its strong electro-optic and optical nonlinearities as well as CMOS compatibility, scandium-alloyed aluminum nitride (ScAlN) stands out as a material with transformative potential for next-gener...
Short-period InGaAs/AlInAs THz quantum cascade lasers in thin double metal cavities operating up to 188 K
We present a two-well terahertz (THz) quantum cascade laser designed for high-temperature operation based on the InGaAs/AlInAs material system. The lighter effective mass and higher energy barriers in...
Steady-state negative capacitance in SrTiO3/BaTiO3 trilayers and superlattices
Negative capacitance (NC) of ferroelectric materials offers a promising route to realize low-power microelectronics. By introducing an imperfect charge screening medium, the spontaneous polarization o...
Interlayer complementary design of X3N/NbSe2 (X <b>=</b> C, Si) heterostructures for high-performance lithium-ion battery anodes: A first-principles study
Monolayer transition metal dichalcogenides and nitrides often suffer from inherent limitations as LIB anode materials, such as the poor Li adsorption of C3N, the sluggish Li mobility of Si3N, and the...
Direct imaging of temperature evolution of polar nanoregions and chemically ordered regions in PMN relaxor: Evidence for polar phase percolation
Polar nanoregions (PNRs) are central to understanding the exceptional dielectric and piezoelectric properties of relaxor ferroelectrics and are key to advancing dielectrics for high-energy storage. Ho...
Mg diffusion modulation strategy for high-voltage etched-and-regrown GaN p–n junctions
Etching and p-GaN regrowth offer a practical route to fabricate lateral p–n junctions in GaN, which are the essential building blocks of advanced vertical devices. However, the spatial overlap between...
Correlation of recombination dynamics with structural defects in 4H–SiC epitaxial wafers revealed by TRPL
This work demonstrates that deep-UV (266 nm) laser-excited time-resolved photoluminescence (TRPL), combined with controlled surface passivation, provides a sensitive probe for carrier recombination in...
Panoramic hybrid transmission topology and spatially adaptive sensitivity compensation EIT: Wide-field deep imaging via dual-array
Needle-based electrical impedance tomography (EIT) is a crucial modality for the real-time monitoring of irreversible electroporation (IRE) in deep-seated tumors. However, under the conventional adjac...
Interface passivated quasi-2D perovskite-based highly stable photodetectors for weak-light detection
Weak-light detectors exhibiting long-term stability are of significant importance for both national defense and civilian applications. To address this, we fabricated a lateral high-performance photode...
Low-temperature annealing stabilizes Sn2+ in tin–lead perovskites via crystallization kinetics for robust near-infrared photodetectors
The photo-oxidation stability of tin–lead hybrid perovskites (TLHPs), arising from the facile Sn2+ oxidation and subsequent phase reconstruction, remains a major obstacle for near-infrared photodetect...
Surface-state mediated optical actuation of GaAs microcantilevers
We demonstrate optical actuation of n-GaAs microcantilevers using homogeneous, nanowatt-level LED illumination. Intensity-modulated light induces a surface photo-voltage that changes the depletion lay...
Optical sectioning lattice structured illumination microscopy (OS-LSIM)
Optical sectioning structured illumination microscopy (OS-SIM) is a high-speed, minimally invasive, three-dimensional imaging microscopic technique, playing an important role in life science. However,...
Plasma oxidation-enhanced composite passivation for surface leakage reduction in InGaAsSb extended SWIR photodetectors
We report a composite passivation scheme—O2 plasma pretreatment followed by dielectric deposition—to suppress surface leakage in extended short-wave infrared (e-SWIR) InGaAsSb photodetectors. The comp...
The CuI/NiO gradient hole transport layer for enhanced carrier efficiency in large-area perovskite solar cell
The Cs0.05FA0.95PbI3-based solar cell (10 × 10 cm2) with a CuI/NiO bilayer gradient hole transport layer (HTL) is prepared via an approach of sputtering–in situ iodization–annealing method. The large-...