Enhancing the photo-luminescence stability of CH3NH3PbI3 film with ionic liquids

2021 ◽  
Author(s):  
Weifeng Ma ◽  
Chunjie Ding ◽  
Nasrullah Wazir ◽  
Xianshuang Wang ◽  
Denan Kong ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Photo Luminescence

Photo-Luminescence Dynamics of Ionic Liquids Composed of the Dicyanoaurate(I) Anion

2019 ◽  
Vol 72 (2) ◽  
pp. 42 ◽  
Author(s):  
Yoshifumi Kimura ◽  
Takamitsu Narita ◽  
Saki Tanaka ◽  
Mitsuhiro Taniguchi ◽  
Kaori Fujii ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Photo Luminescence ◽  
Wavelength Dependence ◽  
Structural Heterogeneity ◽  
Peak Shift ◽  
Peak Position ◽  
Time Profile ◽  
Excitation Wavelength ◽  
Time Resolved ◽  
The Difference

Time-resolved luminescent spectra of ionic liquids of 1-butyl-3-methylimidazolium dicyanoaurate ([C4mim][Au(CN)2]) and N-butyl-N-methylpyrrolidinium dicyanoaurate ([P14][Au(CN)2]) at different excitation wavelengths (310 and 340nm) were measured using a streak camera. Immediately after photoexcitation, an intense luminescence band appeared at ~380nm that rapidly decayed with a time constant of 31 ps for [C4mim][Au(CN)2] and 71 ps for [P14][Au(CN)2]. With the decay of this band, another luminescent band appeared at ~460nm that slowly decayed (88ns for [C4mim][Au(CN)2] and 1.2μs for [P14][Au(CN)2]). The peak position of this second band shifted to a longer wavelength over time for both ionic liquids. The time profile of the peak showed a multi-exponential decay and depended on the excitation wavelength and the cation species. The peak shift is discussed in terms of the aggregation of anions. The excitation wavelength dependence was supposed to reflect the distribution of the larger oligomer in the ground state and the structural heterogeneity of the ionic liquids. The difference as a result of the cation is discussed in relation to the viscosity and the structure of the ionic liquids.

Investigation of Various Ionic Liquids and Catalyst Materials for Lithium-Oxygen Batteries

2011 ◽  
pp. 110923034559006
Author(s):  
Arnd Garsuch ◽  
D. Michael Badine ◽  
Klaus Leitner ◽  
Luiz H. S. Gasparotto ◽  
Natalia Borisenko ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Lithium Oxygen Batteries

GUANIDINCONTAINING OLIGOMERIC CATIONIC POTONIC IONIC LIQUIDS WITH BIOCIDE ACTIVITY

2020 ◽  
Vol 42 (3) ◽  
pp. 218-225
Author(s):  
T.T. Alekseeva ◽  
◽  
N.V. Kozak ◽  
N.V. Yarova ◽  
◽  
...  
Keyword(s):  
Ionic Liquids

Research Trends of Carbon Dioxide Capture using Ionic Liquids and Aqueous Amine-Ionic Liquids Mixtures

2016 ◽  
Vol 13 (1) ◽  
pp. 53
Author(s):  
Siti Nabihah Jamaludin ◽  
Ruzitah Mohd Salleh
Keyword(s):  
Ionic Liquids ◽  
Co2 Capture ◽  
Membrane Separation ◽  
Carbon Dioxide Capture ◽  
Global Climate ◽  
Research Trends ◽  
Co2 Absorption ◽  
Absorption Process ◽  
Chemical Absorption ◽  
Factors Influencing

Anthropogenic CO2 emissions has led to global climate change and widely contributed to global warming since its concentration has been increasing over time. It has attracted vast attention worldwide. Currently, the different CO2 capture technologies available include absorption, solid adsorption and membrane separation. Chemical absorption technology is regarded as the most mature technology and is commercially used in the industry. However, the key challenge is to find the most efficient solvent in capturing CO2. This paper reviews several types of CO2 capture technologies and the various factors influencing the CO2 absorption process, resulting in the development of a novel solvent for CO2 capture.

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