Regulation of Silver Precursor Reactivity via Tertiary Phosphine to Synthesize Near-Infrared Ag2Te with Photoluminescence Quantum Yield of up to 14.7%

2021 ◽  
Author(s):  
Ming-Yu Zhang ◽  
An-An Liu ◽  
Haohao Fu ◽  
Wei Zhang ◽  
Shu-Han Zhang ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Near Infrared ◽  
Tertiary Phosphine ◽  
Photoluminescence Quantum Yield

scholarly journals Multiple Dot-in-Rod PbS/CdS Heterostructures with High Photoluminescence Quantum Yield in the Near-Infrared

2012 ◽  
Vol 134 (12) ◽  
pp. 5484-5487 ◽  
Author(s):  
Yolanda Justo ◽  
Bart Goris ◽  
John Sundar Kamal ◽  
Pieter Geiregat ◽  
Sara Bals ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Near Infrared ◽  
Photoluminescence Quantum Yield

High-efficiency near-infrared fluorescent organic light-emitting diodes with small efficiency roll-off based on AIE-active phenanthro[9,10-d]imidazole derivatives

2020 ◽  
Vol 8 (20) ◽  
pp. 6883-6890 ◽  
Author(s):  
Futong Liu ◽  
Yongbo Tan ◽  
Hui Liu ◽  
Xiangyang Tang ◽  
Lei Gao ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Near Infrared ◽  
High Efficiency ◽  
Organic Light Emitting Diodes ◽  
Strong Fluorescence ◽  
Light Emitting ◽  
Photoluminescence Quantum Yield ◽  
Organic Light

PIBz-3-PTZ exhibits strong fluorescence with a photoluminescence quantum yield of 35% in films. The nondoped device achieves a maximum external quantum efficiency of 2.02% peaking at 672 nm with small efficiency roll-off.

Cubic versus Hexagonal – Phase, Size and Morphology Effects on the Photoluminescence Quantum Yield of NaGdF4:Er3+/Yb3+ Upconverting Nanoparticles

Nanoscale ◽  
2022 ◽  
Author(s):  
Marta Quintanilla ◽  
Eva Hemmer ◽  
Jose Marques-Hueso ◽  
Shadi Rohani ◽  
Giacomo Lucchini ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Visible Light ◽  
Luminescence Intensity ◽  
Near Infrared ◽  
Hexagonal Phase ◽  
Infrared Light ◽  
Photoluminescence Quantum Yield ◽  
Phase Size ◽  
Uv Visible ◽  
Size And Morphology

Upconverting nanoparticles (UCNPs) are well-known for their capacity to convert near-infrared light into UV/visible light, benefitting various applications where light triggering is required. At the nanoscale, loss of luminescence intensity...

Highly luminescent, off-stoichiometric CuxInyS2/ZnS quantum dots for near-infrared fluorescence bio-imaging

RSC Advances ◽  
2015 ◽  
Vol 5 (54) ◽  
pp. 43449-43455 ◽  
Author(s):  
Hyung Seok Choi ◽  
Youngsun Kim ◽  
Jae Chul Park ◽  
Mi Hwa Oh ◽  
Duk Young Jeon ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Yield ◽  
Zinc Sulfide ◽  
Near Infrared ◽  
Core Shell ◽  
Near Infrared Fluorescence ◽  
Photoluminescence Quantum Yield ◽  
Copper Indium ◽  
Bio Imaging ◽  
Heating Up

We synthesized highly luminescent, NIR-emitting copper–indium–sulfur/zinc sulfide (CIS/ZnS) core–shell QDs with a high photoluminescence quantum yield (about 60%) using a heating up method.

Highly Fluorescent Au25-xAgx Nanoclusters Protected with Poly(ethylene glycol) - and Zwitterion-Modified Thiolate Ligands

2018 ◽  
Author(s):  
Dinesh Mishra ◽  
Sisi Wang ◽  
Zhicheng Jin ◽  
Eric Lochner ◽  
Hedi Mattoussi
Keyword(s):  
Quantum Yield ◽  
Near Infrared ◽  
Small Diameter ◽  
Binding Energies ◽  
Thiolate Ligands ◽  
Nir Emission ◽  
Thiolate Complexes ◽  
Long Lifetime ◽  
Poly Ethylene

<p>We describe the growth and characterization of highly fluorescing, near-infrared-emitting nanoclusters made of bimetallic Au<sub>25-x</sub>Ag<sub>x</sub> cores, prepared using various monothiol-appended hydrophobic and hydrophilic ligands. The reaction uses well-defined triphenylphosphine-protected Au<sub>11</sub> clusters (as precursors), which are reacted with Ag(I)-thiolate complexes. The prepared nanoclusters are small (diameter < 2nm, as characterized by TEM) with emission peak at 760 nm and long lifetime (~12 µs). The quantum yield measured for these materials was 0.3 - 0.4 depending on the ligand. XPS measurements show the presence of both metal atoms in the core, with measured binding energies that agree with reported values for nanocluster materials. The NIR emission combined with high quantum yield, small size and ease of surface functionalization afforded by the coating, make these materials suitable to implement investigations that address fundamental questions and potentially useful for biological sensing and imaging applications.<br></p>

Emergence of intense near-infrared photoluminescence by photoactivation of silver nanoclusters

2021 ◽  
Author(s):  
Wataru Ishii ◽  
Shohei Katao ◽  
Yoshiko Nishikawa ◽  
Yasuo Okajima ◽  
Atsuya Hatori ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Near Infrared ◽  
Silver Nanoclusters ◽  
Pyridine Solution

Photoirradiation to a pyridine solution of Ag29 nanoclusters (NCs) with red photoluminescence (PL) at 680 nm activated intense PL in the near infrared (NIR) region, giving a PL quantum yield...

scholarly journals Engineering Sr-doping for enabling long-term stable FAPb1−xSrxI3 quantum dots with 100% photoluminescence quantum yield

2021 ◽  
Vol 9 (5) ◽  
pp. 1555-1566
Author(s):  
Andrés F. Gualdrón-Reyes ◽  
David F. Macias-Pinilla ◽  
Sofia Masi ◽  
Carlos Echeverría-Arrondo ◽  
Said Agouram ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Yield ◽  
Toxic Metals ◽  
Environmentally Friendly ◽  
Photoluminescence Quantum Yield ◽  
Improved Performance ◽  
Pb Substitution

The Pb substitution in quantum dots (PQDs) with lesser toxic metals has been widely searched to be environmentally friendly, and be of comparable or improved performance compared to the lead-perovskite.

Near-Unity Photoluminescence Quantum Yield and Highly Suppressed Blinking in a Toxic-Metal-Free Quantum Dot

2021 ◽  
Vol 12 (5) ◽  
pp. 1426-1431
Author(s):  
Swarnali Ghosh ◽  
Saptarshi Mandal ◽  
Soumen Mukherjee ◽  
Chayan K. De ◽  
Tridib Samanta ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Quantum Dot ◽  
Toxic Metal ◽  
Metal Free ◽  
Photoluminescence Quantum Yield
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