The modulation of luminescence is essential because unwanted spontaneous‐emission
modes have a negative effect on the performance of luminescence‐based photonic devices …

Rampant counterfeit products have seriously threatened worldwide public security. It is
highly desirable yet challenging to develop advanced encryption and anti-counterfeiting …

Due to photonic bandgaps (PBGs) for tuning the luminescence of light emitters together with
metallic and fadeless structural colors, photonic crystals (PCs) have been considered as …

Although the perovskite quantum dots (PQDs) have great application prospects, the poor
stability of PQDs limits their commercial development. Inspired by the previous works, which …

Photonic crystals (PCs) are emerging advanced functional materials with a unique capability
of regulating light propagation and have been demonstrated promising in tuning …

Upconversion nanomaterials possess various unique properties, but they suffer from low
emission efficiency, making them challenging for optical and security applications. In this …

Photonic crystals (PCs) have long been considered effective for tuning upconversion
luminescence due to their photonic band gap (PBG) and the redistribution of density of …

Rational control of the multiple emission outputs and achieving single-band and strong
luminescence of Ln3+ doped upconversion nanoparticles is highly desirable for their …

A series of β-NaLuF4 crystals were synthesized via a hydrothermal method. Hexagonal
phase microdisks, microprisms, and microtubes were achieved by simply changing the …

To date, there are comprehensive researches on rare-earth doped photonic band gap (PBG)
materials. The PBG materials can effectively modify the up-conversion luminescence (UCL) …