98%
921
2 minutes
20
A sacrificial film of polystyrene nanoparticles was utilized to introduce nano-cavities into mesoporous metal oxide layers. This enabled the growth of larger perovskite crystals inside the oxide scaffold with significantly suppressed non-radiative recombination and improved device performance. This work exemplifies potential applications of such nanoarchitectonic approaches in perovskite opto-electronic devices.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1039/d2nr05856a | DOI Listing |
Phys Rev Lett
August 2025
Technische Universität Wien, Institute of Solid State Physics, 1040 Vienna, Austria.
Tailoring charge transport in solids on demand is the overarching goal of condensed-matter research as it is crucial for electronic applications. Yet, often the proper tuning knob is missing and extrinsic factors such as impurities and disorder impede coherent conduction. Here, we control the very buildup of an electronic band from impurity states within the pseudogap of ternary Fe_{2-x}V_{1+x}Al Heusler compounds via reducing the Fe content.
View Article and Find Full Text PDFNat Commun
July 2025
Institute of Applied Physics and Materials Engineering, University of Macau, Macau, China.
Two-dimensional semiconductors hold great potential as coherent light sources for photonic integrated circuits. However, the conventional integration of two-dimensional materials onto silicon photonics introduces significant structural and optoelectronic drawbacks, hindering the practical realization of coherent photonic circuits. Here, we introduce the concept of a van der Waals photonic integrated circuit, which is a complete on-chip optical system fabricated entirely from a van der Waals heterostructure.
View Article and Find Full Text PDFAdv Mater
June 2025
Institute for Frontier Materials, Deakin University, Geelong, Victoria, 3216, Australia.
Since the first report on MXene-coated fibers in 2017, the field has grown rapidly, with over 1500 publications on fiber-related advancements. Improved understanding of MXene's colloidal dispersions has led to new fabrication techniques, resulting in fibers with exceptional electrical conductivity and electrochemical properties. These fibers show promise in energy storage, wearable electronics, motion and strain sensors, and electromagnetic interference shielding.
View Article and Find Full Text PDFNat Commun
June 2025
Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, Singapore.
Flat bands and electron correlation in moiré lattices give rise to many exotic phases, including Mott insulators, superconductivity, and topological states. Within the first moiré band, integer and fractional quantum anomalous Hall effects have been observed in twisted bilayer MoTe (tMoTe) at one hole doping and fractional doping per moiré unit cell, respectively. When the second moiré band is fully hole doped, quantum spin Hall insulator has also been reported in tMoTe at a certain twist angle.
View Article and Find Full Text PDFNat Commun
May 2025
Institute of Advanced Energy, Kyoto University, Uji, Kyoto, 611-0011, Japan.
Stacking two non-polar materials with different inversion- and rotational-symmetries shows unique nonlinear photovoltaic properties, with potential applications such as in next generation solar-cells. These nonlinear photocurrent properties could be further extended with broken time reversal symmetry present in magnetic materials, however, the combination of time reversal and rotation symmetry breaking has not been fully explored. Herein, we investigate the nonlinear photovoltaic responses in van der Waals heterostructure compromising of monolayer semiconductor and layered magnetic material, MoS/CrPS; a system with broken P- and T-symmetry.
View Article and Find Full Text PDF