Low-dimensional halide perovskites easily suffer from the structural distortion related to significant quantum confinement effects. Organic tin bromide perovskite C4N2H14SnBr4 is a unique one-dimensional (1D) structure in which edge sharing octahedral chains [SnBr42–]∞ are embraced by organic cations C4N2H142+ form bulk assembly of core–shell wires. Some unusual phenomena under high pressure accordingly expected. Here, an intriguing pressure-induced emission (PIE) was successfully achieved...

Radioactive materials of nuclear waste would be hazardous to human health such as the reproductive and metabolic system. How design a radioactive material adsorbent quickly efficiently is still great challenge. In this study, strategy for efficient high-potential iodine uptake by theoretical screening proposed. The following experiments which use covalent organic frameworks (COFs) demonstration have agreement with prediction. Three screened COFs show ultrahigh adsorption, reaches up 6.4 g/g...

Improvements in yellow light production, a healthy source for the eyes that is also beneficial to biological growth, are needed satisfy practical requirements of solid-state lighting. Here, we report high-brightness emission zero-dimensional lead-free double-perovskite Rb2TeCl6 microcrystals (MCs) driven by high-pressure processing. We note photoluminescence quantum yields (PLQYs) experience significant enhancement an order magnitude upon mild pressure 1.7 GPa. The overlap between ground...

Piezochromic materials refer to a class of matters that alter their photoluminescence (PL) colors in response the external stimuli, which exhibit promising smart applications anti-counterfeiting, optoelectronic memory and pressure-sensing. However, so far, most reported piezochromic have been confined organic or hybrid containing moieties with limited range less than 100 nm visible region. Here, we achieved an intriguing piezochromism all-inorganic zero-dimensional (0D) Cs

A high precision high-order curvature-compensated bandgap reference (BGR) compatible with standard BiCMOS process is presented in this paper that capable of working down to input voltages 1.6 V 1.285 output voltage. High-order curvature correction for accomplished by a novel piecewise technique, which realizes exponential compensation temperature range, and logarithmic term proportional <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">T</sub> In...

Abstract Designing low‐dimensional halide perovskites (LDHPs) for broadband emissions with enhanced emission and preferred chromaticity coordinator or color temperature remains a pressing challenge. Herein, comprehensive study is conducted about the relationship between crystal structure properties of 1D perovskite C 4 N 2 H 14 PbBr , one promising white‐emission LDHPs. It found that zigzag distortion degree tuned by pressure not only suppresses general photoluminescence quenching, but also...

Copper(I)-based halides have recently attracted increasing attention as a substitute for lead halides, owing to their nontoxicity, abundance, unique structure, and optoelectric properties. However, exploring an effective strategy further improve optical activities revealing structure-optical property relationships still remain great concern. Here, by using high pressure technique, remarkable enhancement of self-trapped exciton (STE) emission associated with the energy exchange between...

A resistorless high-precision compensated CMOS bandgap voltage reference (BGR), which is compatible with a standard process, presented in this paper. higherorder curvature correction method called base-emitter linearization adapted to directly compensate the thermal nonlinearity of voltage. With proper mathematical operations high-order temperature currents, most nonlinear terms VBE can be greatly eliminated. The proposed BGR, implemented 0.35-μm technology, capable working down 2 V supply...

Metal-halide perovskites (MHPs) have attracted tremendous attention because of their excellent performance in photovoltaic devices, such as solar cells. However, the crucial relationship between emission intensity and performance, pressure-quenching optical greatly restrict potential application MHPs. Here, we reported unique pressure-induced enhancement (PIEE) CsPbxMn1–xCl3 NCs. Different from other PIEE phenomena, NCs was caused by energy release 4T1 to 6A1 Mn, attributed isostructural...

We first achieved self-trapped exciton emission with outstanding white-light chromaticity coordinates of (0.330, 0.325) in conventional 3D halide perovskite nanocrystals through pressure engineering.

Volatile nuclear wastes, such as iodine, have received worldwide attention because it poses risks to public safety and pollutes the environment. The efficient capture of radioactive iodine is vital importance for safe utilization power. Herein, we report a series stable covalent organic framework (COF) materials with high efficiency species. Results indicated that all COFs showed adsorption, which reached up 5.82 g g-1 in vapor 99.9 mg solution, suggesting can be an effective potential...

A watt-level multi-gigahertz (GHz) repetition-rate femtosecond optical parametric oscillator (OPO) synchronously pumped by a GHz-repetition-rate Kerr-lens mode-locked Yb:CYA laser is demonstrated in this letter. The output signal had wavelength tuning range from 1.41 to 1.64 μm, maximum average power of 1.58 W, minimum pulse duration 139 fs, and repetition rate 1 GHz, while the mid-infrared idler 2.8 4.0 103 GHz. Through increasing cavity length OPO unit fraction pump source, with rates 2,...

A novel temperature-stable nonbandgap voltage reference, which is compatible with standard CMOS technology, presented in this brief. No diodes or parasitic bipolar transistors are used. Based on mutual temperature compensation of the threshold voltages nMOS and pMOS transistors, a temperature-insensitive reference significant reduction dependence mobility achieved without using subthreshold characteristics. The problem fixed value also avoided by different parameter design. Experimental...

In HV (high-voltage) and HF (high-frequency) applications, SiC (silicon carbide) MOSFET is widely used for its small parasitic characteristics fast switching speed. Using discrete devices on PCB, the active gate driver usually adopted to restrict EMI (electromagnetic interference) noise. This method could achieve a limited performance improvement, many disadvantages still exist. this paper, integrated adaptive multi-level presented improve of in applications. The proposed realized chip using...

A novel low-power temperature-stable voltage reference without resistors is presented in this brief, which compatible with standard CMOS technology. In order to reduce the temperature nonlinearity proposed reference, threshold and a proportional-to-absolute-temperature form basic linear-temperature components, are achieved by resistorless extractor asymmetric differential difference amplifier. Moreover, self-biased current source feedback used provide stable bias currents for whole can...

Excited-state charge-carrier dynamics governs the performance of organometal trihalide perovskites (OTPs) and is strongly influenced by crystal structure. Characterizing excited-state in OTPs under high pressure imperative for providing crucial insights into structure-property relations. Here, we conduct situ high-pressure femtosecond transient absorption spectroscopy experiments to study carrier CH3NH3PbBr3 (MAPbBr3) hydrostatic pressure. The results indicate that compression an effective...

The high-pressure behaviors of three-dimensional (3D) metal halide perovskites (MHPs) have been summarized in this “scientific dictionary”.

Although seeking an effective strategy for further improving their optical properties is a great challenge, two-dimensional (2D) halide perovskites have attracted significant amount of attention because performance. In this regard, the pressure-induced emission accompanied by remarkable pressure-enhanced achieved without phase transition in 2D vacancy-ordered perovskite Cs3Bi2Cl9 nanocrystals (NCs). Note that initial NCs possess extremely strong electron-phonon coupling, leading to easy...

Lead halide perovskites are widely applied in photovoltaic devices and solar cells. However, the economic potential is restricted by toxicity of lead. Two-dimensional (2D) layered organic-inorganic hybrid perovskite (OIHP) copper-based with good stability hypotoxicity greatly fulfill environmentally favorable standards. Herein, we systematically report a synthesis band-gap modulation 2D OIHP...

A cost-effective flexible humidity sensor using eco-friendly and biodegradable nanocellulose (NC) as sensing material has been proposed in this paper. The was prepared by depositing NC films on the interdigitated electrodes (IDE). properties of synthesized were analyzed transmission electron microscope (TEM), Fourier transform infrared spectroscopy (FTIR) X-ray photoelectron (XPS), respectively. At excitation frequency 1 V 100 Hz, achieved up to five orders magnitude changes impedance...

A novel temperature-stable nonbandgap voltage reference without resistors is presented in this brief, which compatible with standard digital CMOS technology. Two linear-temperature terms, i.e., thermal V <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">T</sub> and threshold xmlns:xlink="http://www.w3.org/1999/xlink">TH</sub> , are utilized to realize a low-temperature-dependent significant reduction of nonlinear temperature terms. self-biased...

Doping of Mn2+ into semiconductor nanocrystals has been demonstrated to endow them with novel electronic, optical and magnetic functionalities. In this paper, Mn-doped CsPbX3 (X = Br, Cl) quantum dots (QDs) were synthesized at room temperature via a facile strategy by introducing dimethyl sulfoxide (DMSO)-MnBr2/PbX2 composite as precursor. The excitonic emission spectra the as-obtained QDs can be tuned from 517 nm 418 adjusting ratio PbBr2/PbCl2 precisely, luminescence mechanism doped is...