Non-radiative energy transfer mechanism and optoelectronic properties of (PFO/TiO2)/Fluorol 7GA hybrid thin films

2014 ◽  
Author(s):  
Bandar Ali Al-Asbahi ◽  
Mohammad Hafizuddin Haji Jumali
Keyword(s):  
Thin Films ◽  
Energy Transfer ◽  
Transfer Mechanism ◽  
Optoelectronic Properties ◽  
Radiative Energy ◽  
Energy Transfer Mechanism ◽  
Radiative Energy Transfer ◽  
Hybrid Thin Films

scholarly journals Recent developments of quantum dot based micro-LED based on non-radiative energy transfer mechanism

2021 ◽  
Vol 4 (4) ◽  
pp. 21002201-21002215
Author(s):  
Xiaotong Fan ◽  
◽  
Tingzhu Wu ◽  
Bin Liu ◽  
Rong Zhang ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Quantum Dot ◽  
Transfer Mechanism ◽  
Radiative Energy ◽  
Energy Transfer Mechanism ◽  
Radiative Energy Transfer ◽  
Recent Developments

Efficient power generating devices utilizing low intensity indoor lights via non-radiative energy transfer mechanism from organic ionic redox couples

Nano Energy ◽  
2019 ◽  
Vol 60 ◽  
pp. 457-466 ◽  
Author(s):  
Jayraj V. Vaghasiya ◽  
Keval K. Sonigara ◽  
Lakshmi Suresh ◽  
Majid Panahandeh-Fard ◽  
Saurabh S. Soni ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Transfer Mechanism ◽  
Radiative Energy ◽  
Energy Transfer Mechanism ◽  
Low Intensity ◽  
Radiative Energy Transfer ◽  
Redox Couples ◽  
Efficient Power

scholarly journals Triplet Energy Transfer Mechanism of Ternary Organic Hybrid Thin Films of PFO/MEH-PPV/CsPbBr3 Perovskite Quantum Dots

Nanomaterials ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 2094
Author(s):  
Bandar Ali Al-Asbahi ◽  
Saif M. H. Qaid ◽  
Hamid M. Ghaithan ◽  
Abdullah S. Aldwayyan
Keyword(s):  
Thin Films ◽  
Energy Transfer ◽  
Transfer Mechanism ◽  
Ternary Blend ◽  
Energy Transfer Mechanism ◽  
Triplet Energy ◽  
Blending Method ◽  
Donor And Acceptor ◽  
Hybrid Thin Films ◽  
Triplet Energy Transfer

The triplet energy transfer mechanism of novel poly(9,9-di-n-octylflourenyl-2,7-diyl) (PFO)/poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV)/CsPbBr3 perovskite quantum dot (PQD) hybrid thin films was comprehensively investigated. The concentrations of PFO and MEH-PPV in all the specimens were fixed, while the PQD content was varied with various weight ratios and premixed by a solution blending method before it was spin-coated onto glass substrates. The triplet non-radiative Förster resonance energy transfers (FRETs) in the PFO/MEH-PPV/PQDs ternary blend, the dual FRET from PFO to both PQDs and MEH-PPV, and the secondary FRET from PQDs to MEH-PPV were observed. The values of the Förster radius (Ro) of FRET from PFO to MEH-PPV in the presence of various PQD contents (Case I) increased from 92.3 to 104.7 Å, and they decreased gradually from 68.0 to 39.5 Å for FRET from PFO to PQDs in the presence of MEH-PPV (Case II). These Ro values in both cases confirmed the dominance of FRET in ternary hybrid thin films. Upon increasing the PQD content, the distance between the donor and acceptor molecules (RDA) and the conjugation length (Aπ) in both cases gradually decreased. The small values of Ro, RDA, and Aπ with a decrease in the energy transfer lifetime (τET) due to an increase in the PQD contents in both Cases I and II confirmed the efficient FRET in the hybrid. To prevent intermolecular transfer in PFO, the concentrations of MEH-PPV (Case I) and PQDs (Case II) should be decreased to a range of 0.57–0.39 mM and increased in the range of 1.42–7.25 mM.

scholarly journals Semi classical quantum dots in their own micro cavity

2013 ◽  
Vol 23 ◽  
pp. 23-26
Author(s):  
Karla J. Sánchez Pérez ◽  
J. C. García-Melgarejo ◽  
J. J. Sánchez-Mondragón
Keyword(s):  
Quantum Dots ◽  
Energy Transfer ◽  
Quantum Dot ◽  
Classical Field ◽  
Transfer Mechanism ◽  
Radiative Energy ◽  
Energy Transfer Mechanism ◽  
Radiative Energy Transfer ◽  
Classical Quantum ◽  
Micro Cavity

Among quantum dots there is an interaction called Foerster interaction, it consists on the transfer of one exciton from a quantum dot to another in a non-radiative energy transfer mechanism. In this work, we develop a model of the interaction of a pair of coupled Quan­tum Dots (QDs), each one in its own micro cavity, interacting with its own classical field.

Photophysical properties and energy transfer mechanism of PFO/Fluorol 7GA hybrid thin films

2013 ◽  
Vol 142 ◽  
pp. 57-65 ◽  
Author(s):  
Bandar Ali Al-Asbahi ◽  
Mohammad Hafizuddin Haji Jumali ◽  
Chi Chin Yap ◽  
Moayad Husein Flaifel ◽  
Muhamad Mat Salleh
Keyword(s):  
Thin Films ◽  
Energy Transfer ◽  
Photophysical Properties ◽  
Transfer Mechanism ◽  
Energy Transfer Mechanism ◽  
Hybrid Thin Films

Luminescence Properties and energy transfer mechanism of Eu3+ and Tm3+ Co-doped AlN Thin Films

2021 ◽  
pp. 118082
Author(s):  
Hai Ma ◽  
Xiaodan Wang ◽  
Feifei Chen ◽  
Jiafan Chen ◽  
Xionghui Zeng ◽  
...  
Keyword(s):  
Thin Films ◽  
Energy Transfer ◽  
Transfer Mechanism ◽  
Luminescence Properties ◽  
Energy Transfer Mechanism ◽  
Co Doped

Quantitative cascade energy transfer in semiconductor thin films

2014 ◽  
Vol 13 (7) ◽  
pp. 1031-1038 ◽  
Author(s):  
Rebecca Flamini ◽  
Assunta Marrocchi ◽  
Anna Spalletti
Keyword(s):  
Thin Films ◽  
Energy Transfer ◽  
Charge Transfer ◽  
Transfer Mechanism ◽  
Energy Transfer Mechanism ◽  
Semiconductor Thin Films ◽  
Cascade Energy

An energy transfer mechanism, useful to enhance sunlight harvesting, was found to be operative in donor arylacetylenes’ blend thin films, leading to emission only from the bathochromic species, efficiently quenched by charge transfer to [60]PCBM.

scholarly journals Photophysical Properties and Energy Transfer Mechanism in PFO/TiO2/MEH-PPV Nanocomposite Thin Films

2020 ◽  
Vol 49 (11) ◽  
pp. 2801-2809
Author(s):  
Sameer Albati ◽  
Mohammad Hafizuddin Hj. Jumali ◽  
Bandar Ali Al-Asbahi ◽  
Saif M.H. Qaid ◽  
Chi Chin Yap
Keyword(s):  
Thin Films ◽  
Energy Transfer ◽  
Photophysical Properties ◽  
Transfer Mechanism ◽  
Energy Transfer Mechanism ◽  
Nanocomposite Thin Films

scholarly journals Effect of Donor-Acceptor Concentration Ratios on Non-Radiative Energy Transfer in Zero-Dimensional Cs4PbBr6 Perovskite/MEH-PPV Nanocomposite Thin Films

Polymers ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 444 ◽  
Author(s):  
Bandar Ali Al-Asbahi ◽  
Saif M. H. Qaid ◽  
Abdullah S. Aldwayyan
Keyword(s):  
Thin Films ◽  
Energy Transfer ◽  
Critical Concentration ◽  
Critical Distance ◽  
Radiative Energy ◽  
Glass Substrates ◽  
Solution Blending ◽  
Radiative Energy Transfer ◽  
Blending Method ◽  
Concentration Ratios

Composite materials with different concentration ratios of a hybrid of zero-dimensional (0-D) Cs4PbBr6 perovskite, which acts as a donor (D), and poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV), which acts as an acceptor (A), were successfully prepared via a solution blending method prior to being deposited onto glass substrates by a spin-coating technique. The influence of acceptor content on the structural, optical, and energy transfer properties of the donor was investigated. The perovskite nanocrystals formed thin films without any chemical interactions within a matrix of MEH-PPV in the blend. The possibility of dipole–dipole (non-radiative) energy transfer from the 0-D Cs4PbBr6 to the MEH-PPV was proven. The energy transfer parameters such as Ro (critical distance of the energy transfer), kapp (apparent quenching constant), ∅ D A (quantum yield of D in the presence of A), τ D A (lifetime of D in the presence of A), PDA (probability of energy transfer), η (efficiency of energy transfer), RDA (energy transfer radius), kET (energy transfer rate constant), TDR (total decay rate), Ao (critical concentration of A), and Aπ (conjugation length) were calculated based on the absorption and emission measurements.

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