New phosphorescent iridium(III) dipyrrinato complexes: synthesis, emission properties and their deep red to near-infrared OLEDs

2021 ◽  
Author(s):  
Hongyang Zhang ◽  
Haitao Wang ◽  
Kevin Tanner ◽  
Adrien Camille Schlachter ◽  
Zhao Chen ◽  
...  
Keyword(s):  
Near Infrared ◽  
Ancillary Ligand ◽  
Emission Properties

A series of heteroleptic Ir(III) complexes composed of two cyclometalated C^N ligands and one dipyrrinato ligand used as an ancillary ligand are synthesized and characterized. With the introduction of a...

Near-infrared emission properties of YbCr3+ions sensitized by CrCr3+ions in YAG powder materials

2015 ◽  
Vol 8 (4) ◽  
pp. 603-607
Author(s):  
段佩华 DUAN Pei-hua ◽  
张继森 ZHANG Ji-sen ◽  
张立国 ZHANG Li-guo ◽  
任建岳 REN Jian-yue ◽  
骆永石 LUO Yong-shi ◽  
...  
Keyword(s):  
Near Infrared ◽  
Infrared Emission ◽  
Powder Materials ◽  
Emission Properties ◽  
Near Infrared Emission

scholarly journals Near infrared emission properties of Er doped cubic sesquioxides in the second/third biological windows

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Daniel Avram ◽  
Ion Tiseanu ◽  
Bogdan S. Vasile ◽  
Mihaela Florea ◽  
Carmen Tiseanu
Keyword(s):  
Near Infrared ◽  
Infrared Emission ◽  
Emission Properties ◽  
Er Doped ◽  
Near Infrared Emission ◽  
Biological Windows

scholarly journals Investigation of upconversion and near infrared emission properties in CeO_2: Er^3+, Yb^3+ inverse opals

2013 ◽  
Vol 21 (19) ◽  
pp. 22186 ◽  
Author(s):  
Hangjun Wu ◽  
Zhengwen Yang ◽  
Jiayan Liao ◽  
Shenfeng Lai ◽  
Jianbei Qiu ◽  
...  
Keyword(s):  
Near Infrared ◽  
Infrared Emission ◽  
Emission Properties ◽  
Inverse Opals ◽  
Near Infrared Emission

Effect of Ce3+ Concentration on the Luminescence Properties of Ce3+/Er3+/Yb3+ Tri-Doped NaYF4 Nanocrystals

2016 ◽  
Vol 16 (4) ◽  
pp. 3749-3753 ◽  
Author(s):  
Xuee Liu ◽  
Jianbei Qiu ◽  
Xuhui Xu ◽  
Dacheng Zhou
Keyword(s):  
Energy Transfer ◽  
Hydrothermal Method ◽  
Fluorescence Intensity ◽  
Emission Intensity ◽  
Doping Concentration ◽  
Near Infrared ◽  
Luminescence Properties ◽  
Emission Mechanism ◽  
Emission Properties ◽  
Nir Emission

In order to investigate the effect of Ce3+ concentration on the emission properties of Er3+/Yb3+ codoped NaYF4 nanocrystals, Ce3+/Er3+/Yb3+ tri-doped NaYF4 nanocrystals were prepared through a facile EDTA-assisted hydrothermal method. The upconversion (UC) and the near infrared (NIR) emission properties of Er3+ ions were systematically investigated in the NaYF4:Ce3+/Er3+/Yb3+ nanocrystals. Under 980 nm excitation, with the increasing of Ce3+ concentration, the emission intensity of Er3+ at 1550 nm (4I13/2 → 4I15/2) band increases initially and then decreases. The increase of the fluorescence intensity of 1550 nm is due to the energy transfer between Er3+ and Ce3+ ions: Er3+:4I11/2 +Ce3+:2F5/2 → Er3+:4I13/2 +Ce3+:2F7/2. But when Ce3+ doping concentration is 2.0%, the cross relaxation:Er3+:4I13/2 +Ce3+:2F5/2 →Er3+:4I15/2 +Ce3+:2F7/2 happens, which depopulates the 4I13/2 level of Er3+ and results in the decrease of the emission intensity of Er3+ at 1550 nm band. Meanwhile, incorporation of Ce3+ dramatically decreases the visible UC emission intensity. A possible emission mechanism was proposed.

Sol-gel preparation and near-infrared emission properties of Yb3+ sensitized by Mn4+ in double-perovskite La2ZnTiO6

2018 ◽  
Vol 84 ◽  
pp. 82-88 ◽  
Author(s):  
Jinsheng Liao ◽  
Liyun Kong ◽  
Qi Wang ◽  
Jinqiong Li ◽  
Guanghuai Peng ◽  
...  
Keyword(s):  
Near Infrared ◽  
Sol Gel ◽  
Double Perovskite ◽  
Infrared Emission ◽  
Emission Properties ◽  
Gel Preparation ◽  
Near Infrared Emission

Defect induced tunable near infrared emission of Er–CeO2 by heterovalent co-dopants

2016 ◽  
Vol 18 (27) ◽  
pp. 18268-18277 ◽  
Author(s):  
Mihaela Florea ◽  
Daniel Avram ◽  
Bogdan Cojocaru ◽  
Ion Tiseanu ◽  
Vasile Parvulescu ◽  
...  
Keyword(s):  
Near Infrared ◽  
Infrared Emission ◽  
Emission Properties ◽  
Near Infrared Emission

We investigate the effects of heterovalent co-dopants on the structural and emission properties of 1% Er–CeO2 nanoparticles.

Two efficient near-infrared (NIR) luminescent [Ir(C^N)2(N^O)]-characteristic complexes with 8-hydroxyquinoline (8-Hq) as the ancillary ligand

2019 ◽  
Vol 101 ◽  
pp. 69-73 ◽  
Author(s):  
Jiahao Guo ◽  
Jin Zhou ◽  
Guorui Fu ◽  
Yani He ◽  
Wentao Li ◽  
...  
Keyword(s):  
Near Infrared ◽  
Ancillary Ligand
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