Featured
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Suppressing ion migration in metal halide perovskite via interstitial doping with a trace amount of multivalent cations
Ion migration has a detrimental effect on the performance and stability of halide perovskite optoelectronics. Here, the authors incorporated a small dosage of high-valence neodymium cation to suppress this, with a minimal impact on the lattice microstrain.
- Yepin Zhao
- , Ilhan Yavuz
- & Yang Yang
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Molecular optical imaging probes for early diagnosis of drug-induced acute kidney injury
Chemiluminescent molecular renal probes have been developed and are shown to be capable of non-invasive real-time imaging of early-stage oxidative stress biomarkers of drug-induced acute kidney injury, and high renal clearance.
- Jiaguo Huang
- , Jingchao Li
- & Kanyi Pu
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Regioselective surface encoding of nanoparticles for programmable self-assembly
Selective surface blocking allows for the regioselective DNA functionalization of nanoparticles and control over their self-assembly.
- Gang Chen
- , Kyle J. Gibson
- & Yossi Weizmann
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Continuous-wave infrared optical gain and amplified spontaneous emission at ultralow threshold by colloidal HgTe quantum dots
Stimulated emission under continuous-wave excitation from mercury telluride quantum dots at very low thresholds (compatible with electrical injection) is achieved by exploiting surface traps that render the quantum dots into four-level systems.
- Pieter Geiregat
- , Arjan J. Houtepen
- & Zeger Hens
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Thermally stable coexistence of liquid and solid phases in gallium nanoparticles
A real-time investigation shows that Ga nanoparticles in the solid γ-phase coexist with liquid Ga at a broad range of temperatures, as a result of nanoscale confinement, Laplace pressure and epitaxial matching with the substrate.
- Maria Losurdo
- , Alexandra Suvorova
- & April S. Brown
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Understanding and predicting the orientation of heteroleptic phosphors in organic light-emitting materials
The asymmetric organic/vacuum interface created during the vacuum deposition of an amorphous organic layer doped with heteroleptic phosphors controls the orientation of the dopant molecules, which improves the outcoupling efficiency of organic LEDs.
- Matthew J. Jurow
- , Christian Mayr
- & Mark E. Thompson
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Resonant light trapping in ultrathin films for water splitting
Semiconductor photoelectrodes for solar hydrogen production by water photoelectrolysis require stable and abundant visible-light absorbers such as iron oxide. Although this material suffers from poor transport properties for efficient charge-carrier generation and collection, these drawbacks can now be addressed by using resonant light trapping in ultrathin films designed as optical cavities.
- Hen Dotan
- , Ofer Kfir
- & Avner Rothschild
Suppression of Dexter transfer by covalent encapsulation for efficient matrix-free narrowband deep blue hyperfluorescent OLEDs