Narrow-band gap (NBG) Sn–Pb perovskites with band gaps of ?1.2 eV, which correspond to a broad photon absorption range up ?1033 nm, are highly promising candidates for bottom solar cells in all-perovskite tandem photovoltaics. To exploit their potential, avoiding optical losses the top layer stacks configuration is essential. This study addresses this challenge two ways (1) removing hole-transp...

Achieving thermoelectric devices with high performance based on low-cost and nontoxic materials is extremely challenging. Moreover, as we move toward an Internet-of-Things society, a miniaturized local power source such generator (TEG) desired to increasing numbers of wireless sensors. Therefore, in this work, all-oxide p–n junction TEG composed low-cost, abundant, materials, n-type ZnO p-type ...

Abstract With excellent safety and outstanding energy density, all-solid-state batteries is of a prospect for surpassing liquid Li + batteries. 6 PS 5 Cl, exhibits desirable ductility good conduction property, which the most commonly used solid-state electrolyte. Herein, 3.75 Si alloys have been prepared by high milling technology as an anode to couple with NCM811 cathode demonstrated capacity....

We report a strong nonlinear optical response of 2D MoSe$_2$ nanoflakes (NFs) through spatial self-phase modulation (SSPM) and cross-phase (XPM) induced by nonlocal coherent light-matter interactions. The interaction light NFs creates the SSPM laser beams, forming concentric diffraction rings. refractive index ($n_2$) third-order broadband susceptibility ($\chi^{(3)}$) are determined from self ...

Cesium-based all-inorganic CsPbI2Br perovskite solar cells (PSCs) offer excellent thermal stability and an optimum bandgap for photovoltaic applications, making them promising alternatives to the thermally unstable organic–inorganic metal halide perovskites. State-of-the-art single-junction PSCs are yet achieve high power conversion efficiency (PCE) of hybrid counterparts. Herein, numerical sim...

Sulfide-based all-solid-state lithium-ion batteries (LIBs) are promising replacements for conventional liquid electrolyte LIBs. However, their degradation mechanisms and analysis methods poorly understood. Herein, the mechanism of an argyrodite-type sulfide-based prototype LIB cell is reported. Furthermore, method using charge/discharge cycle tests at 100°C followed by disassembly cells before ...

This paper presents methods for the design of non-uniform filter banks. The filter bank structure is obtained from a uniformly modulated filter bank by using an allpass transform which has a lossless frequency function and a nonlinear phase function. The proposed design method includes quadratic optimization with linear constraints. Considered applications are subband adaptive filtering and sub...