Development of novel up-conversion host material that emits light only in a single wavelength band
- 성균융합원
- Hit2760
- 2018-09-17
Development of novel up-conversion host material that emits light only in a single wavelength band
Laser liquefaction-quenching method overcomes the material limitation of existing host materials
Upconversion phenomenon is a phenomenon that continuously absorbs photons with low energy and emits photons with higher energy.
The up-conversion phenomenon occurs in lanthanide ions (Ln3 +) doped in an inorganic host material, and up conversion efficiency and luminescence spectrum are determined as a result of complex interactions between the host material and lanthanide ions. However, up conversion efficiency and spectral purity are low, and development of new host material that can overcome this is required.
Professor Kim Dong-hwan maximized interaction with lanthanide ions by developing a new host material that does not have a short-range order (1st coordination order) by liquefying-quenching the host material using a laser , Thereby succeeding in developing a highly efficient up-conversion material that emits light in a single wavelength band.
The results of this study are significant because they overcome the material limitation of existing host materials with stable arrangement in the natural world.
This research, supported by the Korea Research Foundation, was selected as a cover paper by Advanced Materials (IF 19.791), a worldwide academic journal in the field of material science, in recognition of its importance. (2018.06.20.)