Tear-Based Aqueous Batteries for Smart Contact Lenses Enabled by Prussian Blue Analogue Nanocomposites
Batteries for contact lenses fabricated by conventional methods could cause severe damage to the eyes if broken. Herein, we present flexible aqueous batteries that operate in tears and provide a safe power supply to smart contact lenses. Nanocomposite flexible electrodes of carbon nanotubes and Prus…
Tailoring electrolyte solvation for Li metal batteries cycled at ultra-low temperature
Charging and discharging Li-metal batteries (LMBs) at low temperatures is problematic due to the sluggish charge-transfer process. Here the authors discuss the roles of solvation structures of Li-ions in the charge-transfer kinetics and design an electrolyte to enable low-temperature operations of L…
published February 25, 2021
batterieschemical engineeringmaterials chemistryelectrolyteli metal batteriesultra-low temperaturesulfurized polyacrylonitrile
Identification of embedded nanotwins at c-Si/a-Si:H interface limiting the performance of high-efficiency silicon heterojunction solar cells
Silicon heterojunction solar cells are expected to increase their market share in the near future. Qu et al. identify an embedded nanotwin structure at the crystalline silicon/hydrogenated amorphous silicon interface of silicon heterojunction cells that limits the device performance and devise an ap…
published February 8, 2021
tandemsolar cellhydrogenated amorphous siliconcrystalline siliconheterojunction solar cellin-situ HR-TEMbuffer layer
Ligand-engineered bandgap stability in mixed-halide perovskite LEDs
The binding of multidentate ligands to the surface of lead halide perovskite nanocrystals suppresses the formation of surface defects that result in halide segregation, yielding materials with efficient and colour-stable red emission.
Perovskite and Quantum Dot Tandem Solar Cells with Interlayer Modification for Improved Optical Semitransparency and Stability
In this work, four-terminal (4T) tandem solar cells were fabricated by using a methylammonium lead iodide (MAPbI3) perovskite solar cell (PSC) as front-cell and a lead sulfide (PbS) colloidal quantum dot solar cell (CQDSC) as back-cell. Different modifications of the tandem interlayer, at the interf…
tandemmethylammonium lead iodideMAPbI3perovskitesolar cellsPSClead sulfidePbScolloidalquantum dot solar cellQDSCinfrared transparencyinfraredtransmittancephotovoltaicsmolybdenum oxideMoO3
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A Review on Micro/Nanoforming to Fabricate 3D Metallic Structures
A systematic review on micro‐/nanoforming processes for the fabrication of 3D metallic structures with multifunctional properties is presented. The latest advances in achieving such microbulk forming...
Elastic substrates, especially poly(dimethylsiloxane) (PDMS) substrates, are indispensable components for emerging stretchable electronics. Detailed design concepts and fabrication strategies for str...
Field‐Effect Transistors Based on Formamidinium Tin Triiodide Perovskite
This work reports the first top‐gate field effect transistor using a formamidinium tin triiodide perovskite thin film as a semiconducting channel. Hole mobility of 0.21 cm2 V−1 s−1, an ION/OFF ratio ...
published January 20, 2021
field-effect transistorsFETsperovskiteFormamidinium Tin TriiodideFASnI3
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Hydrogen‐Bond‐Assisted Exciplex Emitters Realizing Improved Efficiencies and Stabilities in Organic Light Emitting Diodes
A novel strategy is proposed to develop exciplex emitters by introducing intermolecular hydrogen bond (HB) between electron‐donating and electron‐accepting constituting molecules, and a series of exc...
Revisiting metal fluorides as lithium-ion battery cathodes
Metal-fluoride-based lithium-ion battery cathodes are typically classified as conversion materials because reconstructive phase transitions are presumed to occur upon lithiation. Metal fluoride lithiation is now shown to be dominated instead by diffusion-controlled displacement mechanisms.
published January 21, 2021
lithium ion batteryLIBcathodemetal fluoridesenergy storageelectrochemistryconversion materialsFeF2CuF2