Franck–Condon analysis of fluorescence quenching in hybrid P3HT: wt% TBPO-capped CdSe quantum dot matrix

Hamed, Zied Ben; Mastour, Nouha; Chaabane, Abir; Kouki, Fayçal; Sanhoury, M. A. K.; Bouchriha, H.

doi:10.1016/j.jlumin.2015.10.022

Cited by 12 publications

(2 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The energy gaps of the Sb 2 S 3 NCs were calculated by plotting the αhv 1/2 vs. hv and extrapolating the linear portion of the curve to αhv = 0, as shown in Figure 5 a (insert). The optical bandgap (Eg) determined using the Tauc equation [ 27 ] was 1.79 eV.…”

Section: Resultsmentioning

confidence: 99%

Optimization of Sb2S3 Nanocrystal Concentrations in P3HT: PCBM Layers to Improve the Performance of Polymer Solar Cells

et al. 2021

View full text Add to dashboard Cite

In this study, polymer solar cells were synthesized by adding Sb2S3 nanocrystals (NCs) to thin blended films with polymer poly(3-hexylthiophene)(P3HT) and [6,6]-phenyl-C61-butyric-acid-methyl-ester (PCBM) as the p-type material prepared via the spin-coating method. The purpose of this study is to investigate the dependence of polymer solar cells’ performance on the concentration of Sb2S3 nanocrystals. The effect of the Sb2S3 nanocrystal concentrations (0.01, 0.02, 0.03, and 0.04 mg/mL) in the polymer’s active layer was determined using different characterization techniques. X-ray diffraction (XRD) displayed doped ratio dependences of P3HT crystallite orientations of P3HT crystallites inside a block polymer film. Introducing Sb2S3 NCs increased the light harvesting and regulated the energy levels, improving the electronic parameters. Considerable photoluminescence quenching was observed due to additional excited electron pathways through the Sb2S3 NCs. A UV–visible absorption spectra measurement showed the relationship between the optoelectronic properties and improved surface morphology, and this enhancement was detected by a red shift in the absorption spectrum. The absorber layer’s doping concentration played a definitive role in improving the device’s performance. Using a 0.04 mg/mL doping concentration, a solar cell device with a glass /ITO/PEDOT:PSS/P3HT-PCBM: Sb2S3:NC/MoO3/Ag structure achieved a maximum power conversion efficiency of 2.72%. These Sb2S3 NCs obtained by solvothermal fabrication blended with a P3HT: PCBM polymer, would pave the way for a more effective design of organic photovoltaic devices.

show abstract

Section: Resultsmentioning

confidence: 99%

Optimization of Sb2S3 Nanocrystal Concentrations in P3HT: PCBM Layers to Improve the Performance of Polymer Solar Cells

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The rst one, is the P3OT/OAcapped CdSe interface contact and the second one is medium and severe clusters formation (i.e. polymer clusters, NPs clusters and complex clusters 69 ) related to the overall decrease of impedance. We would also point out the weak peaks located at the grain resistance region.…”

Section: Resultsmentioning

confidence: 99%

Dielectric properties of poly-(3-octylthiophene) thin films mixed with oleic acid capped cadmium selenide nanoparticles

Hajlaoui

Benchaabane

Benhamed³

et al. 2020

RSC Adv.

View full text Add to dashboard Cite

show abstract

Chitosan/P3HT biohybrid films as polymer matrices for the in‐situ synthesis of CdSe quantum dots. Experimental and theoretical studies

Moreno‐Serna

Méndez-López

Vásquez‐Espinal

et al. 2020

J of Applied Polymer Sci

View full text Add to dashboard Cite

Biohybrid nanocomposite films were obtained through a simple two‐step methodology. Films of chitosan/poly(3‐hexylthiophene) (CS/P3HT) were used as polymer matrices for the in‐situ synthesis and stabilization of CdSe quantum dots. The biohybrid materials were characterized by attenuated total reflectance Fourier transform infrared spectroscopy (ATR‐FTIR), Raman spectroscopy, UV–visible spectroscopy, thermogravimetric analysis (TGA), field emission scanning electron microscope (FESEM), high‐resolution transmission electron microscopy (HRTEM), and photoluminescence spectroscopy (PL). The effects of the P3HT composition on the properties of the QDs in the films were analyzed. The results confirmed that CS/P3HT films provided an adequately confining matrix for the growth of CdSe QDs with a fairly uniform size and revealed that the interactions between the CdSe nanoparticles and the CS/P3HT matrix mainly involved the OH and NH2 groups. The optical band gaps of the biohybrid nanocomposite films were estimated. The results of photoluminescence revealed that a charge transfer phenomenon occurred in the polymer system. Finally, theoretical analyses suggest that the CdSe QDs would be preferentially located onto the chitosan domains.

show abstract

Franck–Condon analysis of fluorescence quenching in hybrid P3HT: wt% TBPO-capped CdSe quantum dot matrix

Cited by 12 publications

References 51 publications

Optimization of Sb2S3 Nanocrystal Concentrations in P3HT: PCBM Layers to Improve the Performance of Polymer Solar Cells

Optimization of Sb2S3 Nanocrystal Concentrations in P3HT: PCBM Layers to Improve the Performance of Polymer Solar Cells

Dielectric properties of poly-(3-octylthiophene) thin films mixed with oleic acid capped cadmium selenide nanoparticles

Chitosan/P3HT biohybrid films as polymer matrices for the in‐situ synthesis of CdSe quantum dots. Experimental and theoretical studies

Contact Info

Product

Resources

About