Photo stability enhancement of Poly(3-hexylthiophene)-PCBM nanocomposites by addition of multi walled carbon nanotubes under ambient conditions

Ratha, Radhakrishna; Goutam, Prasanta J.; Iyer, Parameswar Krishnan

doi:10.1016/j.orgel.2014.03.015

Cited by 12 publications

(5 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3), due to the higher molecular stacking in the solid state than in the liquid phase. 17,30 The absorbance intensity of the PCDTBT:PCBM film was found to decrease gradually with respect to increasing the exposure time (−5.5% after 8 h and −13.5% after 24 h), whereas that of the PCDTBT:PCBM:GNPs film shows rather a limited reduction over the test period (−2.8% after 8 h and −4.6% after 24 h). Previous results suggested that the decrease in absorption intensity indicates a photooxidation at the π-conjugate moieties.…”

Section: Resultsmentioning

confidence: 96%

“…Decrease in absorption intensity indicates that degradation is taking place. 13,14,17,18,[27][28][29] Iyer and coworkers 17,18 reported that CH-π and π-π interactions between CPs and carbon nanomaterials could be the main reason behind the increased photostability of their composite. In sum, the photostability of our PCDTBT: PCBM suspensions improves significantly (∼35%) through GNPs addition.…”

Section: Resultsmentioning

confidence: 99%

“…15,16 Few groups demonstrated that dispersion of carbon nanotubes (CNTs) into a polymer matrix can improve the photo-thermal stability and mechanical flexibility. 17,18 However, limiting factors such as impurities, low solubility and insolubility in some solvents have limited the integration of CNTs in commercial products, especially when used in high concentration. 19 To address these challenges, considerable efforts have been devoted to use other nanocarbon allotropes, including graphene, which exhibits several properties that are very appropriate for photovoltaics (solution processability, high thermal and mechanical stability, high carrier mobility and excellent optical transparency).…”

mentioning

confidence: 99%

See 2 more Smart Citations

Hybrid PCDTBT:PCBM:Graphene-Nanoplatelet Photoabsorbers

Mohammadnezhad¹,

Aïssa²,

Harnagea³

et al. 2020

J. Electrochem. Soc.

View full text Add to dashboard Cite

We study the photoactive properties of poly [N-9′-heptadecanyl-2,7-carbazole-alt-5,5-(4′,7′di-2-thienyl-2′,1′,3′-benzothiadiazole)] (PCDTBT): [6,6]-Phenyl-C71-butyric acid methyl ester (PCBM) thin films under ultraviolet irradiation as well as their photo-oxidation, thermal and electrical properties. We compare their stability and performance with composites obtained by integrating graphene nanoplatelets (GNPs). Compared to the pristine polymer, an increase in light absorption and photoluminescence quenching were observed in PCDTBT:PCBM:GNPs. This indicates the occurrence of electron transfer from the conjugated polymer to the empty state of the GNP, through the interfacial bonding based on CH-π and ππ interactions, thereby reducing the photodegradation of the active layer. This is manifested by a significant decline in photo-oxidation, followed by improved thermal stability and suppressed phase separation and aggregation of the PCBM molecules. Atomic force microscopy imaging of the PCDTBT:PCBM:GNPs nanocomposite revealed that graphene flakes enhance the order of the polymeric structures. Finally, we discuss the effect of the GNPs content on the electrical conductivity and electron mobility of the photoactive layer. Our findings offer significant insights into the PV properties and photo physics of hybrid organic bulk-heterojunction solar cells, paving the way towards enhancing their durability and long term performance.

show abstract

Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Hybrid PCDTBT:PCBM:Graphene-Nanoplatelet Photoabsorbers

Mohammadnezhad¹,

Aïssa²,

Harnagea³

et al. 2020

J. Electrochem. Soc.

View full text Add to dashboard Cite

show abstract

“…It was seen that aromatic amine-functionalized pristine is especially important for a vast variety of nanotube applications spanning from nanoelectronics to nanomedicine. Carbon nanotubes, with their high electron transport properties, electrical properties, mechanical flexibility, stability and wide absorption band gaps, can be added to assist the charge transport process in the layers of the OSC device [21][22][23][24][25][26][27][28][29][30]. Afterwards, with the polymer functionalized of the MWCNT, which is physically stable and conductivity, have been designed different electronic devices [31].…”

Section: Introductıonmentioning

confidence: 99%

Application of organic photovoltaic cell: poly(2-aminofluoren)/multi-walled carbon nanotube composites

Baldemir

Topuksak

Taş

et al. 2021

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

This work presents the 2-aminofluorene polymer matrix based on the multiwalled carbon nanotube module for an alternative energy conversion system as a photovoltaic solar cell. The properties of the MWCNT-PAF composite were taken characterized by thermogravimetric methods, differential scanning calorimetry, fourier-transform infrared spectroscopy analysis, scanning electron microscope images and X-ray powder diffraction analysis, furthermore, photophysical properties are observed in cyclic voltammetry, fluorescent and UV-Vis spectrometer. This work pioneer that the synthesized new structures are used for the first time in the active layers of solar cell devices. These new conductive polymers have exhibited good performance by adding different proportions of MWCNT to the functionalized PAF polymer, which were used for the first time in the active layer of OPV devices. According to our results PAF1, PAF2, PAF3 material exhibited more efficient performance than PAF.

show abstract

“…[8][9][10][11][12][13] Recently, new opportunities are sought in order to scale up the applications of organic-based semiconductors and enhance their performance. [14][15][16][17] Blending organic polymers with low dimension conductive materials seems to be an interesting approach in view of increasing the conductivity and tunability of organic electronics as well as introducing other features. [18][19][20][21] In our previous work, we have demonstrated some semiconductor behavior of the articial composites fabricated by incorporating multiwall carbon nanotubes (MWNTs) into insulating poly(dimethylsiloxane) (PDMS) rubber.…”

Section: Introductionmentioning

confidence: 99%