Synthesis and photovoltaic properties of organic dyes containing N-fluoren-2-yl dithieno[3,2-b:2′,3′-d]pyrrole and different donors

Kumar, Sunil; Thomas, K. R. Justin; Li, Chun Ting; Ho, Keang-Po

doi:10.1016/j.orgel.2015.07.019

Cited by 22 publications

(4 citation statements)

References 82 publications

(86 reference statements)

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“…The HOMO energy levels were then calculated from the respective LUMO energy level values and optical band gap values. The optical band gap values in turn were obtained from the intersection of absorption and emission spectra . The optical and electrochemical properties of complexes 4A – 4D are summarized in Table .…”

Section: Resultsmentioning

confidence: 99%

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Multifunctional Zn(II) Complexes: Photophysical Properties and Catalytic Transesterification toward Biodiesel Synthesis

2016

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Using 4-substituted derivatives of phenol-based compartmental Schiff-base hydroxyl-rich ligand, four multifunctional binuclear Zn(II) complexes have been synthesized and characterized. The photophysical properties of these complexes were explored in the solid state, in solutions, and in poly(methyl methacrylate) (PMMA) matrix, which revealed their good potential as tunable solid state emitters. Some of these complexes acted as efficient catalysts for the transesterification of esters and canola oil showing their potential in biodiesel generation. Mechanistic investigations using ESI-MS revealed that the transesterification catalyzed by these complexes proceeds through two types of acyl intermediates.

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Section: Resultsmentioning

confidence: 99%

“…The HOMO energy levels of complexes were calculated by subtracting the optical band gap value ( E g,opt ) from the respective LUMO energy levels ( E HOMO = E LUMO – E g,opt ) . The optical band gaps were determined from the intersection of absorption and emission spectra …”

Section: Experimental Sectionmentioning

confidence: 99%

Multifunctional Zn(II) Complexes: Photophysical Properties and Catalytic Transesterification toward Biodiesel Synthesis

2016

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“…The dyes of the present work show, on balance, good photovoltaic parameters, with efficiencies in the range 4–6. Comparing these values with those reported in literature for dyes based on fused-ring systems, although they are not as high as some optimized structures, ,,,, they are comparable ,− and sometimes competitive ,,− with other reported dyes. These achievements support the rationale behind the choice of the BTBT system as a π-core of dyes for DSSC.…”

Section: Resultsmentioning

confidence: 99%

[1]Benzothieno[3,2-b]benzothiophene-Based Organic Dyes for Dye-Sensitized Solar Cells

et al. 2016

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Three new metal-free organic dyes with the [1]benzothieno[3,2-b]benzothiophene (BTBT) π-bridge, having the structure donor-π-acceptor (D-π-A) and labeled as 19, 20 and 21, have been designed and synthesized for application in dye-sensitized solar cells (DSSC). Once the design of the π-acceptor block was fixed, containing the BTBT as the π-bridge and the cyanoacrylic group as the electron acceptor and anchoring unit, we selected three donor units with different electron-donor capacity, in order to assemble new chromophores with high molar extinction coefficients (ε), whose absorption features well reflect the good performance of the final DSSC devices. Starting with the 19 dye, which shows a molar extinction coefficient ε of over 14,000 M(-1) cm(-1) and takes into account the absorption maximun at the longer wavelength, the substitution of the BFT donor unit with the BFA yields a great enhancement of absorptivity (molar extinction coefficient ε > 42,000 M(-1) cm(-1)), until reaching the higher value (ε > 69,000 M(-1) cm(-1)) with the BFPhz donor unit. The good general photovoltaic performances obtained with the three dyes highlight the suitable properties of electron-transport of the BTBT as the π-bridge in organic chromophore for DSSC, making this very cheap and easy to synthesize molecule particularly attractive for efficient and low-cost photovoltaic devices.

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“…As several organic materials, pentacene has attracted considerable attention among researchers in the recent past due to its attractive properties, which make it frequently used in electronics components fabrication, such as organic field effect transistors, photodiodes, organic light-emitting diodes, Schottky barrier diodes, solar cells photovoltaics, and logic W. Khaldi gate applications [3]- [9]. Research in organic Schottky structures has received an important attention for many years, and especially in these recent years to develop a new generation of organic Schottky diodes.…”

Section: Introductionmentioning

confidence: 99%

Electrical Study of Pentacene-Based Metal–Semiconductor–Metal Structure: Schottky Barrier and Active Layer Thickness Effects

Khaldi

Boubaker

Nasri

et al. 2018

IEEE Trans. Electron Devices

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The impact of electrodes and active layer thickness on the current-voltage characteristics of Au/Pentacene/Al structure was studied using a physicallybased 2-D simulation by solving Poisson's, continuity, and drift diffusion equations. The main parameters required for simulation are extracted from the logarithmic representation of experimental current-voltage curves. The simulation results produce an excellent overlapping with the experimental data after including parameters previously found in our model. Finally, the simulation was used to better understand the physical processes together with mechanisms governing the efficiency of the device under investigation and to have a predictive behavior.

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Synthesis and photovoltaic properties of organic dyes containing N-fluoren-2-yl dithieno[3,2-b:2′,3′-d]pyrrole and different donors

Cited by 22 publications

References 82 publications

Multifunctional Zn(II) Complexes: Photophysical Properties and Catalytic Transesterification toward Biodiesel Synthesis

Multifunctional Zn(II) Complexes: Photophysical Properties and Catalytic Transesterification toward Biodiesel Synthesis

[1]Benzothieno[3,2-b]benzothiophene-Based Organic Dyes for Dye-Sensitized Solar Cells

Electrical Study of Pentacene-Based Metal–Semiconductor–Metal Structure: Schottky Barrier and Active Layer Thickness Effects

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