Effect of Cr/Sb doping and annealing on nonlinear absorption coefficients of SnO2 /PMMA nanocomposite films

Pepe, Yasemin; Karatay, Ahmet; Donar, Yusuf Osman; Bilge, Selva; Yıldız, Elif Akhüseyin; Yüksek, Mustafa; Sınağ, Ali; Elmalı, Ayhan

doi:10.1016/j.matchemphys.2020.123596

Cited by 22 publications

(7 citation statements)

References 74 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the literature, Sb doping in SnO 2 is reported to widen the band gap by the Burstein-Moss shift. 60–62 However, a decrease in the bandgap is also reported in the case of appropriately doped degenerate SnO 2 , which has been explained based on the effective mass of the carriers. 63…”

Section: Resultsmentioning

confidence: 98%

“…In the literature, Sb doping in SnO 2 is reported to widen the band gap by the Burstein-Moss shift. [60][61][62] However, a decrease in the bandgap is also reported in the case of appropriately doped degenerate SnO 2 , which has been explained based on the effective mass of the carriers. 63 To investigate the surface wettability of the TO and ATO thin films, the contact angle of water droplets on their surfaces is measured as shown in Fig.…”

Section: Structural and Elemental Analysesmentioning

confidence: 96%

See 1 more Smart Citation

Cost-effective Sb-doped SnO₂ films as stable and efficient alternative transparent conducting electrodes for dye-sensitized solar cells

et al. 2022

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 98%

Section: Structural and Elemental Analysesmentioning

confidence: 96%

Cost-effective Sb-doped SnO₂ films as stable and efficient alternative transparent conducting electrodes for dye-sensitized solar cells

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Nonlinear optical properties like nonlinear and saturable absorptions are highly affected by localized defect states that alter the band gap energy ( E g ) in the structure of the material. These states could be altered by changing the thickness of the material, doping or heat treatment, and can be filled by one‐photon absorption (OPA), two‐photon absorption (TPA) and free‐carrier absorption (FCA) mechanisms 5–10 …”

Section: Introductionmentioning

confidence: 99%

“…These states could be altered by changing the thickness of the material, doping or heat treatment, and can be filled by one-photon absorption (OPA), two-photon absorption (TPA) and free-carrier absorption (FCA) mechanisms. [5][6][7][8][9][10] Nowadays, polymer nanofibers produced by electrospinning attract more attention. 11 Recent studies show that contrary to conventional advanced polymer fibers, these nanofibers can present a high strength and high toughness at the same time.…”

Section: Introductionmentioning

confidence: 99%

Morphology, defects and polymer concentration related nonlinear absorption and optical limiting properties of electrospun polyamide 6 nanofibers

Pepe

Akkoyun

Karatay

et al. 2022

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

The effects of morphology, defects and polymer concentration on nonlinear absorption characteristics of electrospun polyamide 6 (PA 6) nanofibers were studied systematically. Scanning electron microscopy measurements showed that a deviation from uniform nanofibers to irregular cob-web nanofibers morphology occurred with increasing PA 6 concentration and fiber diameter. Open aperture Z-scan results indicated that the thinner uniform PA 6 nanofibers present higher nonlinear absorption. This observation is mainly attributed to a greatest light scattering for thicker uniform nanofibers, considering the linear optical analysis of the PA 6 nanofibers. As a secondary factor, this could be associated with defect state distribution within the band gap, which facilitates the contribution of two photon absorption (TPA) and free carrier absorption (FCA) to nonlinear absorption. Moreover, the thinner uniform nanofibers exhibit higher optical limiting behavior. Polyamide 6 nanofibers attract more attention for biomedical applications due to their good biocompatibility. However, to our knowledge, no study exists on PA 6 nanofibers nonlinear optical properties and their dependency on nanofiber morphology. Therefore, in line with the reported results, this report reveals that PA 6 nanofibers are a promising material for optoelectronic applications as well as biomedical applications.

show abstract

“…For this purpose, diverse metals (such as Co, Mg, Mn, Sn, Fe, and In) with varied concentration has been used as a dopant in NiO matrix [11][12][13][14]. The distribution and size of the dopant material in the polymer matrix is a considerable interest because such type of nanocomposite (NC) can paved the way to control and adjust the optical parameters of the materials [15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Development of novel flexible photodetectors based on 0.5PVA/0.5PVP/Fe:NiO nanocomposite system with enhanced optoelectronic properties

Ghabara

Ali

Kumar³

et al. 2022

New J. Phys.

View full text Add to dashboard Cite

Ordinary casting technique has been used to fabricate the intrinsic films of polyvinyl alcohol (PVA) and polyvinyl pyrrolidone (PVP) polymer blend matrix incorporated with dissimilar weight percent contents of Fe:NiO nanocomposite. XRD (X-Ray Diffraction) and IR spectroscopy has been implemented to analyze nanocomposite structure of these films. Significant interaction and tuning of PVA/PVP blend matrix due to Fe:NiO nanocomposite is detected. XRD pattern reflects the structural modification and partial crystalline nature of the pristine blend matrix. The corresponding peaks of Fourier transform infrared (FTIR) identifies the vibrational group of the synthesized samples. AFM (Atomic Force Microscope) images indicate that a change in the Fe:NiO concentration in a pristine blend leads to an increase in the roughness and clusters. Numerous optical factors such as Eg (transition band gap), refractive index (n), and Eed (absorption edge) of pure blend and blend films with different concentrations of Fe:NiO were assessed via UV-Vis optical absorption spectra. As we increased the doping concentration in pristine blends, the value of Eg goes to decrease. The dispersion (Ed) and oscillator (Eo) energies were calculated from WDD (Wemple and D. Domenico) of a single oscillator. Although, optical susceptibilities and nonlinear refractive index were enhanced by doping with Fe:NiO nanocomposite. The change in doping content leads to modifications in the optical limiting. The photocurrent density - voltage properties of the present polymers were studied at different values of white light intensity. It was found that the photoconductivity of the PVA/PVP blend is 1.03275x 10-8 (Ω.cm)-1, while nanocomposite films varied in the range (1.03-10.6954) x 10-8 (Ω.cm)-1 at 8600 lux. In addition, the photosensitivity increased from 13.82 to 24.08. The recombination process was found monomolecular process for pure and doped polymers. The present films assume the possibility of their uses in optical and photo-electric devices.

show abstract

Effect of Cr/Sb doping and annealing on nonlinear absorption coefficients of SnO2 /PMMA nanocomposite films

Cited by 22 publications

References 74 publications

Cost-effective Sb-doped SnO₂ films as stable and efficient alternative transparent conducting electrodes for dye-sensitized solar cells

Cost-effective Sb-doped SnO₂ films as stable and efficient alternative transparent conducting electrodes for dye-sensitized solar cells

Morphology, defects and polymer concentration related nonlinear absorption and optical limiting properties of electrospun polyamide 6 nanofibers

Development of novel flexible photodetectors based on 0.5PVA/0.5PVP/Fe:NiO nanocomposite system with enhanced optoelectronic properties

Contact Info

Product

Resources

About

Effect of Cr/Sb doping and annealing on nonlinear absorption coefficients of SnO2 /PMMA nanocomposite films

Cited by 22 publications

References 74 publications

Cost-effective Sb-doped SnO2 films as stable and efficient alternative transparent conducting electrodes for dye-sensitized solar cells

Cost-effective Sb-doped SnO2 films as stable and efficient alternative transparent conducting electrodes for dye-sensitized solar cells

Morphology, defects and polymer concentration related nonlinear absorption and optical limiting properties of electrospun polyamide 6 nanofibers

Development of novel flexible photodetectors based on 0.5PVA/0.5PVP/Fe:NiO nanocomposite system with enhanced optoelectronic properties

Contact Info

Product

Resources

About

Cost-effective Sb-doped SnO₂ films as stable and efficient alternative transparent conducting electrodes for dye-sensitized solar cells

Cost-effective Sb-doped SnO₂ films as stable and efficient alternative transparent conducting electrodes for dye-sensitized solar cells