Field-Effect Passivation

The implementation of Ga₂O₃ thin film effectively passivates the CZTS/TiO₂ heterojunction by blocking holes away from the buffer layer and acts as an electron-selective contact. This hole-blocking layer reduces interface recombination evident from significant photoluminescence quenching. More information can be found in article number 2200001 by Mukesh Kumar and co-workers.

Herein, the semicoke from coal hydrogasification residue is recycled to prepare FeSC composites for MA via a facile method. These graphs show the models and MA performance of semicoke, FeSC composite prepared under 800 °C.

Semitransparent polymer solar cell (PSC) with the structure of ITO/PEIE/P3HT:PCBM/PEDOT:PSS (PEG) is fabricated using all solution processing without vacuum. The performance of semitransparent PSCs is greatly enhanced after short exposure to white light irradiation, which is mainly ascribed to the conductivity increase in PEDOT:PSS due to the conformation change of PEDOT chains by ultraviolet light irradiation.

In the light of the spectrum characteristics of filter capacitor noise, a high-performance sound insulation component (HSIC) based on coiled-up acoustic metamaterials is developed. By efficiently absorbing its main harmonic components, HSIC can insulate the noise of filter capacitor significantly, which is 4.5 dB(A) higher than that of a homogeneous panel with same area density.

When the mass ratio of PVA: PEG: CS is 5:5:1.5, the friction coefficient reaches 0.068 under long-time running through the effect of hydrogen bond. Compared with the working condition without composite film, the lubrication performance is improved by ten times. The results show that the lubrication performance is excellent.

A15 phase powder-in-tube (PIT) transformed and body-centered cubic (bcc) phase as-quenched (Nb_1−xTi_x)₃Al and (Nb_1−xTa_x)₃Al (x = 0.03, 0.1) wires are prepared by rapid heating, quenching, and transformation (RHQT) method. The effects of Ti and Ta additions on the crystal structure, microstructure, and superconducting properties of Nb₃Al superconductors are compared and analyzed by X-ray diffractometer (XRD), micro-XRD, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and magnetic properties tests.

The Mg _x Zn_1−x O gradient film is realized by the sol–gel method and laser thermal treatment process. The Mg²⁺ component of the Mg _x Zn_1−x O gradient film varies from x = 0.35 to x = 0.54 due to the radial distribution of laser thermal treatment temperature. The MSM structure devices based on Mg _x Zn_1−x O gradient film show a wide response spectrum from 330 to 245 nm.

The conduction band energy has been raised by replacing the GaN channel with the InGaN channel in AlInGaN/GaN HEMTs, thus the carrier confinement at the channel bottom is greatly enhanced. Better carrier confinement increases the peak transconductance and the f_T and f_max are improved by 27.88% and 35.33% when compared to GaN channel devices.

The pulsed laser ablation of molybdenum disulfide (MoS₂) target is carried out in liquid nitrogen to synthesize three-layer nitrogen-doped MoS₂ nanosheets with p-type properties. Various microanalyses are examined to characterize the nanosheets. Then, spin coating/fishing method is used to fabricate MoS₂ diaphragm which is assembled in Fabry–Pérot optical fiber-acoustic sensor to achieve the greatest sensitivity ever seen.

Plasma-chemical synthesis allows to produce Ni–NiO–C nanomaterial. Ni nanoparticles are surrounded by a carbon matrix. Burning out of amorphous and low graphitizable carbon structures improves the material's electrical conductivity and electrochemical properties as supercapacitor electrodes. Higher temperature calcination leads to deterioration of the electrochemical properties due to carbon burning out and nanoparticle agglomeration.

Gas pressure-mediated selenization provides a feasible way for the in situ synthetic control of chemical composition and vacancy doping of 2D transition metal selenides/oxides.