Results 291 to 300 of about 9,097,966 (350)

IR-Luminescent Molecules in Hybrid Materials

Journal of Sol-Gel Science and Technology, 2003
In the present work we report on steady-state and dynamical optical properties of four polymethine dye molecules absorbing in the near infrared (IR) region (0.8–1.1 μm) and emitting around 1.2 μm. The molecules are embedded in organically modified silicate (ORMOSIL) material synthesized by a sol-gel method.
PROSPOSITO, PAOLO, CASALBONI, MAURO, DE MATTEIS, FABIO, QUATELA, ALESSIA, Glasbeek, M, van Veldhoven, E, Zhang, H.   +6 more
openaire   +4 more sources

Persistent Luminescence Materials

2003
The luminescent efficiency of rare earth ions is usually drastically lowered when defects are present in the host lattice. Persistent luminescence is the most recent rare earth application based on lattice defects. Typical materials are the Eu2+ doped alkaline earth aluminates, MAl2O4:Eu2+ (M = Ca and Sr).
T. Aitasalo, J. Hölsä, J.-C. Krupa, M. Lastusaari, J. Niittykoski   +4 more
openaire   +1 more source

Recording Holograms in Luminescent Materials

Applied Optics, 1969
The fluorescein-boric acid glass organophosphor has been characterized as a transient photochromic hologram receptor medium in which an excited electronic state gives rise to the holographic grating. It is shown that the holographic signal depends upon dye concentration, sample thickness, and writing laser power.
openaire   +2 more sources

Recent Progress on Circularly Polarized Luminescent Materials for Organic Optoelectronic Devices

Advanced Optical Materials, 2018
Due to the characteristics of optical rotation, selective emission of polarized light, and circular dichroism, circularly polarized luminescent materials have aroused extensive attentions, and they have exhibited wide optoelectronic applications, such as
Jianmei Han, Song Guo, Hu Lu, Shu-juan Liu, Qiang Zhao, Wei Huang   +5 more
semanticscholar   +1 more source

Upconversion Luminescent Materials: Properties and Luminescence Mechanisms

2019
The upconversion (UC) luminescent materials typically refer to the materials doped with rare earth (RE) ions or transition metal ions as the luminescence centers, among which the lanthanides ions possess superior UC efficiency. UC luminescence (UCL) is a kind of anti-Stokes process, which absorbs two or more photons with a low energy while emits one ...
Dandan Song, Suling Zhao, Zheng Xu
openaire   +1 more source

Luminescent Materials

Manufacturing chemist and aerosol news, 2004
Suning Wang, Corey Seward
openaire   +3 more sources

Luminescent Materials

2022
Zoila Barandiarán, Jonas Joos, Luis Seijo   +2 more
openaire   +1 more source

Fundamentals of Luminescent Materials

2017
Persistent luminescent materials feature long-lasting emission up to days after ceasing the excitation. In this chapter, the underlying mechanism of luminescence involving photon absorption, emission and afterglow processes is first described. We then place our emphasis on the discussion of emission features of inorganic persistent phosphors, including
Suli Wu, Zaifa Pan, Runfeng Chen, Xiaogang Liu   +3 more
openaire   +1 more source

A review on fluorescence intensity ratio thermometer based on rare-earth and transition metal ions doped inorganic luminescent materials

, 2021
Qiang Wang, M. Liao, Qiuming Lin, Mingxiang Xiong, Z. Mu, Fugen Wu   +5 more
semanticscholar   +1 more source

Transition metal ion activated near-infrared luminescent materials

Progress in Materials Science, 2022
Xu Feng, Liting Lin, Rui Duan, J. Qiu, Shifeng Zhou   +4 more
semanticscholar   +1 more source