Multiple channels to enhance near-infrared emission from SiO2–SnO2:Er3+ films by Ba2+ ion doping

2021 ◽  
Author(s):  
Yangyi Zhang ◽  
Lixiang Wang ◽  
Jiaming Chen ◽  
Guozhi Hou ◽  
Dongke Li ◽  
...  
Keyword(s):  
Thin Film ◽  
Oxygen Vacancies ◽  
Near Infrared ◽  
Light Emission ◽  
Infrared Emission ◽  
Relaxation Processes ◽  
Multiple Channels ◽  
Nir Light ◽  
Ion Doping ◽  
Near Infrared Emission

By doping Ba2+ ions into a SiO2–SnO2:Er3+ thin film, the NIR light emission of Er3+ ions can be enhanced by about 12 times due to the increase of oxygen vacancies, the improved crystallinity and the strong cross-relaxation processes.

scholarly journals Broadband Near-Infrared Luminescence in Lead Germanate Glass Triply Doped with Yb3+/Er3+/Tm3+

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2901
Author(s):  
Wojciech A. Pisarski ◽  
Joanna Pisarska ◽  
Radosław Lisiecki ◽  
Witold Ryba-Romanowski
Keyword(s):  
Energy Transfer ◽  
Near Infrared ◽  
Infrared Emission ◽  
Relaxation Processes ◽  
Lead Germanate ◽  
Germanate Glass ◽  
Transfer Processes ◽  
Infrared Luminescence ◽  
Near Infrared Emission ◽  
Co Doped

This paper deals with broadband near-infrared luminescence properties of lead germanate glass triply doped with Yb3+/Er3+/Tm3+. Samples were excited at 800 nm and 975 nm. Their emission intensities and lifetimes depend significantly on Er3+ and Tm3+ concentrations. For samples excited at 800 nm, broadband emissions corresponding to the overlapped 3H4 → 3F4 (Tm3+) and 4I13/2 → 4I15/2 (Er3+) transitions centered at 1.45 µm and 1.5 µm was identified. Measurements of decay curves confirm reduction of 3H4 (Tm3+), 2F5/2 (Yb3+) and 4I13/2 (Er3+) luminescence lifetimes and the presence of energy-transfer processes. The maximal spectral bandwidth equal to 269 nm for the 3F4 → 3H6 transition of Tm3+ suggests that our glass co-doped with Yb3+/Er3+/Tm3+ is a good candidate for broadband near-infrared emission. The energy transfer from 4I13/2 (Er3+) to 3F4 (Tm3+) and cross-relaxation processes are responsible for the enhancement of broadband luminescence near 1.8 µm attributed to the 3F4 → 3H6 transition of thulium ions in lead germanate glass under excitation of Yb3+ ions at 975 nm.

Broadband near-infrared emission of La3Ga5GeO14:Tb3+,Cr3+ phosphors: energy transfer, persistent luminescence and application in NIR light-emitting diodes

2020 ◽  
Vol 8 (34) ◽  
pp. 11760-11770
Author(s):  
Biao Bai ◽  
Peipei Dang ◽  
Zhongli Zhu ◽  
Hongzhou Lian ◽  
Jun Lin
Keyword(s):  
Energy Transfer ◽  
Near Infrared ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Infrared Emission ◽  
Persistent Luminescence ◽  
Light Emitting ◽  
Nir Light ◽  
Near Infrared Emission

A broadband near-infrared La3Ga5GeO14:Tb3+,Cr3+ phosphor with high efficiency was achieved via design of energy transfer for NIR LEDs.

scholarly journals Amphiprotism-Coupled Near-Infrared Emission in Extended Pyrazinacenes Containing Seven Linearly Fused Pyrazine Units

2019 ◽  
Vol 141 (50) ◽  
pp. 19570-19574 ◽  
Author(s):  
Gary J. Richards ◽  
Aël Cador ◽  
Shinji Yamada ◽  
Anna Middleton ◽  
Whitney A. Webre ◽  
...  
Keyword(s):  
Near Infrared ◽  
Infrared Emission ◽  
Near Infrared Emission

Broadband near-infrared emission of K3ScF6:Cr3+ phosphors for night vision imaging system sources

2021 ◽  
Vol 417 ◽  
pp. 129271
Author(s):  
Haojun Yu ◽  
Jian Chen ◽  
Ruiyu Mi ◽  
Juyu Yang ◽  
Yan-gai Liu
Keyword(s):  
Near Infrared ◽  
Imaging System ◽  
Infrared Emission ◽  
Night Vision ◽  
Near Infrared Emission

Broadband near infrared emission of Er3+/Yb3+ co-doped fluorotellurite glass

2021 ◽  
Vol 866 ◽  
pp. 158568
Author(s):  
Jiaming Liu ◽  
Xin Huang ◽  
Heng Pan ◽  
Xu Zhang ◽  
Xiujie Fang ◽  
...  
Keyword(s):  
Near Infrared ◽  
Infrared Emission ◽  
Near Infrared Emission ◽  
Co Doped

Ab Initio Two-sites Occupancy and Broadband Near-Infrared Emission of Cr3+ in Li2MgZrO4

2021 ◽  
Author(s):  
Xue Zhou ◽  
Jinmeng Xiang ◽  
Jiming Zheng ◽  
Xiaoqi Zhao ◽  
Hao Suo ◽  
...  
Keyword(s):  
Plant Growth ◽  
Ab Initio ◽  
Light Source ◽  
Near Infrared ◽  
Broad Band ◽  
Infrared Emission ◽  
Night Vision ◽  
Light Emitting ◽  
Non Destructive ◽  
Near Infrared Emission

Near-infrared (NIR) phosphor-converted light-emitting diodes (pc-LEDs) light source have great potential in non-destructive detection, promoting plant growth and night vision applications, while the discovery of a broad-band NIR phosphor still...

[Ln4] Complexes Based on 8-hydroxylquinoline-Schiff Base: Synthesis, Crystal Structure and Near-infrared Emission

Polyhedron ◽  
2021 ◽  
pp. 115165
Author(s):  
Jian Gou ◽  
Qian-Qi Yang ◽  
Si-Yu Li ◽  
Li-Hua Zhao ◽  
Hong-Ling Gao ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Schiff Base ◽  
Near Infrared ◽  
Infrared Emission ◽  
Near Infrared Emission
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