Entangled exchange-spring magnetic structure driven by surface magnetic symmetry-breaking in Cr2O3 nanoparticles

Bulk Cr2O3 is an antiferromagnetic oxide that exhibits the magneto-electric effect at room temperature, with neither spontaneous magnetization nor net electric polarization. These physical properties stem from a subtle competition...

Amorphous Co(OH)2 nanocages achieving efficient photo-induced charge transfer for significant SERS activity

Boosting substrate-molecule interactions, especially the strong vibronic coupling and efficient photo-induced charge transfer (PICT) transitions, are critical issues to improve surface-enhanced Raman scattering (SERS) sensitivity of non-metal substrates. Here, by...

Design of efficient color-tunable long persistent luminescence phosphor BaGa2O4:Pr3+ and its performance enhancement via a trap-induced strategy

Color-tunable long persistent luminescence (LPL) phosphors are more strongly desired for intelligent anti-counterfeiting and information storage compared with single color types.

Air-processed stable near-infrared Si-based perovskite light-emitting devices with efficiency exceeding 7.5%

Two composite layers are used to enhance the efficiency of Si-based near-infrared perovskite light-emitting devices, which are produced in ambient air, and the external quantum efficiency increased to 7.5%.

Access to luminescent mesophases of gold(I) chiral complexes by thermal or mechanic stimuli. The role of the tertiary carbon

Chiral gold(I) isocyanide complexes [Au(p-C6F4OR1)(p-CNC6H4(O2CC6H4(OR2)] with R1, R2 or both being (R)-2-octyl, display an interesting and unprecedented response to mechanical or thermal stress. For all the complexes, heating leads to...

Large energy-storage density and positive electrocaloric effect in xBiFeO3–(1 − x)BaTiO3 relaxor ferroelectric ceramics

Large energy storage density and big electrocaloric strength in the BiFeO3–BaTiO3 system.

Suppression of Halide Migration and Immobile Ionic Surface Passivation for Blue Perovskite Light-Emitting Diodes

Cs-based perovskite nanocrystals (PeNCs) have been considered to be superb emitters for perovskite light-emitting diodes (PeLEDs) due to their remarkable optoelectronic properties. Still, poor optical properties are mainly attributed to...

Engineering metal oxide semiconductor nanostructures for enhanced charge transfer: fundamentals and emerging SERS applications

Fundamentals of doping engineering strategies of metal oxide semiconductors and various charge transfer processes for emerging SERS applications are discussed.

Structural Modification from Centrosymmetric Rb4Hg2Ge2S8 to Noncentrosymmetric (Na3Rb)Hg2Ge2S8: Mixed Alkali-metals Strategy for Infrared Nonlinear Optical Material Design

Noncentrosymmetric (NCS) structure is the precondition for second-order nonlinear optical (NLO) materials. In this work, we present a new strategy for constructing NCS structures, that mixed alkali-metals made a new...

Enhanced blue TADF in D-A-D type naphthyridine derivative with asymmetric carbazole-donor motif

Efficient triplet-to-singlet conversion in conventional donor-acceptor TADF compounds relies on charge-transfer (CT) and locally-excited (LE) triplet state mixing as this provides required spin-orbit coupling. In this work, asymmetric carbazole-donor motif...