Theoretical study of radiative and nonradiative decay rates for Cu(i) complexes with double heteroleptic ligands

2018 ◽  
Vol 20 (14) ◽  
pp. 9419-9428 ◽  
Author(s):  
Yuannan Chen ◽  
Aimin Ren ◽  
Zhongyue Yang ◽  
Tengfei He ◽  
Xiaoli Ding ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Theoretical Study ◽  
Decay Rates ◽  
Nonradiative Decay ◽  
Phosphorescence Quantum Yield ◽  
Electron Donating Groups

Phosphorescence quantum yield increases significantly because kr increases and knr decreases upon introducing electron-donating groups to N^N ligands.

Radiative and nonradiative decay rates in chromium-related centers in nanodiamonds

2011 ◽  
Vol 36 (21) ◽  
pp. 4224 ◽  
Author(s):  
S. Castelletto ◽  
A. Boretti
Keyword(s):  
Decay Rates ◽  
Nonradiative Decay

Predicting Phosphorescence Quantum Yield for Pt(II)-Based OLED Emitters from Correlation Function Approach

2019 ◽  
Vol 123 (17) ◽  
pp. 11140-11150 ◽  
Author(s):  
Inkoo Kim ◽  
Won-Joon Son ◽  
Youn-Suk Choi ◽  
Alexey Osipov ◽  
Dongseon Lee ◽  
...  
Keyword(s):  
Correlation Function ◽  
Quantum Yield ◽  
Function Approach ◽  
Phosphorescence Quantum Yield

Radiative and Nonradiative Decay of the BH(b3Σ-) State:  A Joint Experimental and Theoretical Study

1996 ◽  
Vol 100 (14) ◽  
pp. 5649-5653 ◽  
Author(s):  
Xin Yang ◽  
Lisa Pederson ◽  
David R. Yarkony ◽  
Paul J. Dagdigian
Keyword(s):  
Theoretical Study ◽  
Nonradiative Decay

Theoretical study on the quantum yield spectra of a field-assisted Au–BaO thin film

2006 ◽  
Vol 348 (3-6) ◽  
pp. 272-278 ◽  
Author(s):  
Hai Yang ◽  
Li Ma ◽  
Xue-Bing Xie ◽  
Hong-Fei Yu
Keyword(s):  
Thin Film ◽  
Quantum Yield ◽  
Theoretical Study

Experimental and theoretical study of ligand field, 4f–4f intensities and emission quantum yield in the compound Eu(bpyO2)4(ClO4)3

2001 ◽  
Vol 323-324 ◽  
pp. 654-660 ◽  
Author(s):  
O.L Malta ◽  
J Legendziewicz ◽  
E Huskowska ◽  
I Turowska-Tyrk ◽  
R.Q Albuquerque ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Theoretical Study ◽  
Ligand Field ◽  
Emission Quantum Yield

Comparison of Fluorescence-to-Phosphorescence Quantum Yield Ratios in Solid-Matrix Luminescence as a Function of Temperature

1993 ◽  
Vol 47 (3) ◽  
pp. 283-286 ◽  
Author(s):  
R. J. Hurtubise ◽  
S. M. Ramasamy
Keyword(s):  
Quantum Yield ◽  
Singlet State ◽  
Yield Ratio ◽  
Solid Matrix ◽  
Quantum Yields ◽  
Phosphorescence Lifetime ◽  
Fundamental Parameters ◽  
Fluorescence Quantum Yields ◽  
Photophysical Parameters ◽  
Phosphorescence Quantum Yield

An equation that relates the ratio of fluorescence to phosphorescence quantum yields as function of temperature to basic photophysical parameters is considered. The quantum yields were obtained from three compounds on three different solid matrices. Fluorescence quantum yields did not change much with temperature, while phosphorescence quantum yields changed more substantially with temperature. For some of the systems considered, it was possible to show that, as the temperature was lowered, the quantum yield ratio was only a function of the phosphorescence lifetime of the phosphor. However, with other systems, the quantum yield ratio was dependent on both the rate constant of intersystem crossing from the singlet state to the triplet state and the phosphorescence lifetime. The equation discussed is important in defining the fundamental parameters that cause the luminescence quantum yield ratio to change as temperature is lowered.

Investigation of ligand effects on exciton recombination in PbS nanoparticles

2011 ◽  
Vol 89 (3) ◽  
pp. 339-346 ◽  
Author(s):  
Jennifer M. Zemke ◽  
Thomas E. Novet ◽  
David R. Tyler
Keyword(s):  
Transient Absorption ◽  
Decay Rates ◽  
Transient Absorption Spectroscopy ◽  
Absorption Data ◽  
Pbs Nanoparticles ◽  
Nonradiative Decay ◽  
Femtosecond Transient Absorption ◽  
Ligand Shell ◽  
Highly Sensitive ◽  
Exciton Recombination

Multiple exciton generation (MEG) and exciton recombination were studied by femtosecond transient absorption spectroscopy in PbS nanoparticles (NPs) capped with oleic acid (PbS–OLA) and 2,3-dimercaptopropane sulfonate (PbS–DMPS) ligands. Analysis of the transient absorption data showed that the PbS–DMPS nanoparticles exhibit increased rates of multi- and single-exciton recombination compared with the PbS–OLA nanoparticles; however, the MEG yield for both sets of particles was the same within experimental error. The origin of the differences in the exciton recombination decay rates is unknown, but it is speculated that it may be due to the ionic functionality of DMPS or to the different ligating atoms of the OLA and DMPS ligands. The PbS–DMPS nanoparticles were highly sensitive to the presence of oxygen, which caused a dramatic increase in nonradiative decay pathways, which can be mistaken for multiexciton absorbance and decay. Removal of oxygen eliminated the nonradiative decay pathways. Overall, this study showed that the dynamics of MEG can be modified by changing the NP ligand shell, a result that may be useful in the development of NP-based thin-film solar devices.

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