Related Experiment Video
Updated: Jan 13, 2026
Synthesis of Core-shell Lanthanide-doped Upconversion Nanocrystals for Cellular Applications
Published on: November 10, 2017
Color tuning in lanthanide ions doped upconversion nanocrystals
JiaYue Zhang1, Xinyu Wang1, Yuxin Jin1
1Key Lab of In-Fiber Integrated Optics of Ministry of Education of China, College of Physics and Optoelectronic Engineering, Harbin Engineering University Harbin 150001 P.R. China liulu@hrbeu.edu.cn zhangjianzhong@hrbeu.edu.cn lby2565738163@163.com.
Lanthanide-based upconversion nanocrystals offer tunable colors for diverse applications. This review highlights recent advancements in manipulating these nanomaterials for improved performance and expanded use.
Area of Science:
- Materials Science
- Nanotechnology
- Photonics
Background:
- Lanthanide ions doped upconversion nanocrystals (UCNs) are gaining attention for their tunable emission colors.
- Their unique 4f energy levels enable color tuning, leading to broad application prospects.
Purpose of the Study:
- To review and discuss recent progress in lanthanide-based color-tunable UCNs.
- To explore methods for manipulating UCN properties and experimental configurations for color control.
Main Methods:
- Review of intrinsic property manipulations in UCNs.
- Analysis of external experimental configurations for color tuning.
Main Results:
- Color-tunable UCNs demonstrate potential in display devices, anti-counterfeiting, optical coding, thermometry, bioimaging, and phototherapy.
- Advancements in controlling emission bands and expanding application boundaries.
Conclusions:
- Lanthanide-based UCNs offer versatile luminescence for advanced applications.
- Further research is needed to precisely manipulate emission bands and broaden their application scope.
More Related Videos
07:24Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals
Published on: April 14, 2020
12:51A 'Plug and Play' Method to Create Water-dispersible Nanoassemblies Containing an Amphiphilic Polymer, Organic Dyes and Upconverting Nanoparticles
Published on: November 14, 2015
Related Concept Videos
03:02Colors and Magnetism
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
01:14Photoluminescence: Applications
02:58Crystal Field Theory - Octahedral Complexes
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...