Dr. Ho Seong Jang and colleagues at the Extreme Materials Research Center at the Korea Institute of Science and Technology (KIST) have developed an upconversion nanoparticle technology that introduces ...

Photon upconversion (UC) occurs when two or more lower-energy photons are converted into higher-energy ones. Upconversion nanoparticles (UCNPs) are a key type of upconversion material. UCNPs are ...

Photon upconversion involves a series of non-linear optical processes where the sequential absorption of two or more photons leads to the emission of a single photon with energy greater than the sum ...

Researchers developed core@multi-shell upconversion nanoparticles that emit full-color light, enhancing color accuracy in advanced display technologies. (Nanowerk News) Dr. Ho Seong Jang and ...

Upconversion nanoparticles possess the distinctive power of converting low absorption photons to high emission energies, enabling minimal tissue absorptions and optimal tissue penetrations.

The maximum absorption wavelength of silicon solar cells (SSCs) is approximately 1100 nm, due to the inherent bandgap limitations of silicon materials. This constraint results in significant optical ...

A project at the University of Science and Technology of China (USTC) has developed a contact lens allowing wearers to perceive near-IR wavelengths and see better in the dark. Described in Cell, the ...

(Left) Scanning transmission electron microscopy (STEM) image of core@multi-shell nanoparticles (Right) Schematic of core@multi-shell nanostructure and magnified STEM image. Credit: Korea Institute of ...