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FAPbI3 perovskites have garnered considerable interest owing to their outstanding thermal stability, along with near‐theoretical bandgap and efficiency. However, their inherent phase instability presents a substantial challenge to the long‐term stability of devices. Herein, this issue through a dual‐strategy of self‐assembly 3D/0D quasi‐core–shell structure is tackled as an internal encapsulation...
Flexible perovskite solar cells (F‐PSCs) have emerged as promising alternatives to conventional silicon solar cells for applications in portable and wearable electronics. However, the mechanical stability of inherently brittle perovskite, due to residual lattice stress and ductile fracture formation, poses significant challenges to the long‐term photovoltaic performance and device lifetime. In this...
Defect engineering is promising to tailor the physical properties of 2D semiconductors for function‐oriented electronics and optoelectronics. Compared with the extensively studied 2D binary materials, the origin of defects and their influence on physical properties of 2D ternary semiconductors are not clarified. Here, the effect of defects on the electronic structure and optical properties of few‐layer...
Chemical bonds determine electron and phonon transport in solids. Tailoring chemical bonding in thermoelectric materials causes desirable or compromise thermoelectric transport properties. In this work, taking an example of CaMg2Bi2 with covalent and ionic bonds, density functional theory calculations uncover that element Zn, respectively, replacing Ca and Mg sites cause the weakness of ionic and...
Tumor Microenvironments
In article number 2304491, Zhiyuan Tian and co‐workers develop a metal‐organic framework (MOF)‐based nanoagent capable of sequentially killing cancer‐associated fibroblast and tumor cells via phototriggered dual‐channel generation of •OH, activating tumor immune response, and regulating tumor microenvironment, which enables the potently synergistic antitumor phototherapy.
A composite nanoagent capable of phototriggered tumor microenvironment (TME) regulation is developed based on copper (II) metal‐organic frameworks (MOFs) with encapsulation of blebbistatin (Bb) and surface modification of fibroblast activation protein‐αtargeted peptide (Tp). Tp enables active targeting of the nanoagents to cancer‐associated fibroblast (CAF) while near‐infrared light triggers Cu2+‐to‐Cu...
Piezocatalysis is an emerging technique that holds great promise for the conversion of ubiquitous mechanical energy into electrochemical energy through piezoelectric effect. However, mechanical energies in natural environment (such as wind energy, water flow energy, and noise) are typically tiny, scattered, and featured with low frequency and low power. Therefore, a high response to these tiny mechanical...
Traditional current‐driven spintronics is limited by localized heating issues and large energy consumption, restricting their data storage density and operation speed. Meanwhile, voltage‐driven spintronics with much lower energy dissipation also suffers from charge‐induced interfacial corrosion. Thereby finding a novel way of tuning ferromagnetism is crucial for spintronics with energy‐saving and...
Despite the promising achievements of immune checkpoint blockade (ICB) therapy for tumor treatment, its therapeutic effect against solid tumors is limited due to the suppressed tumor immune microenvironment (TIME). Herein, a series of polyethyleneimine (Mw = 0.8k, PEI0.8k)‐covered MoS2 nanosheets with different sizes and charge densities are synthesized, and the CpG, a toll‐like receptor‐9 agonist,...
Deterministic Magnetization Switching
A sunlight‐controlled, non‐volatile, near 180‐degree deterministic magnetization switching is illustrated in Pt/Co/Pt/PN Si heterostructures with a magnetic bias assistant. The perpendicular magnetic anisotropy (PMA) can be regulated via photoelectron‐induced Fermi level altering and corresponding Rashba field change at the Pt/Co interfaces. The sunlight tuning...
The pinhole‐free and defect‐less perovskite film is crucial for achieving high efficiency and stable perovskite solar cells (PSCs), which can be prepared by widely used anti‐solvent crystallization strategies. However, the involvement of anti‐solvent requires precise control and inevitably brings toxicity in fabrication procedures, which limits its large‐scale industrial application. In this work,...
Finding an energy‐efficient way of switching magnetization is crucial in spintronic devices, such as memories. Usually, spins are manipulated by spin‐polarized currents or voltages in various ferromagnetic heterostructures; however, their energy consumption is relatively large. Here, a sunlight control of perpendicular magnetic anisotropy (PMA) in Pt (0.8 nm)/Co (0.65 nm)/Pt (2.5 nm)/PN Si heterojunction...