Tunable electrophysical properties of composites nano-CdS/polyvinyl alcohol

Rudko, G. Yu.; Kovalchuk, Andrii; Бондаренко, В.А.; Fediv, V. I.; Gule, E. G.

doi:10.1016/j.matchemphys.2014.07.014

Cited by 3 publications

(3 citation statements)

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“…7a sketches a schematic energy level diagram for a Au source/drain electrode, PbPc, PTCDA, C 60 and PVA molecules according to the publications. 25,[39][40][41] Note that the lowest unoccupied molecular orbital (LUMO) and the highest occupied molecular orbital (HOMO) energies of PVA films could not be measured, but only a band gap of B6 eV could be obtained from the previous publication. 41 At room temperature, PVA polymer is partly 25,[39][40][41] This journal is © the Owner Societies 2016 crystalline and partly amorphous (see Section S2 in ESI †).…”

Section: Theoretical Analysis and Explanationmentioning

confidence: 99%

“…25,[39][40][41] Note that the lowest unoccupied molecular orbital (LUMO) and the highest occupied molecular orbital (HOMO) energies of PVA films could not be measured, but only a band gap of B6 eV could be obtained from the previous publication. 41 At room temperature, PVA polymer is partly 25,[39][40][41] This journal is © the Owner Societies 2016 crystalline and partly amorphous (see Section S2 in ESI †). Similar to other disordered systems, the density of states has tails in the band gap of PVA.…”

Section: Theoretical Analysis and Explanationmentioning

confidence: 99%

“…(d) Schematic of charge trapping process via voltage-program under negative gate bias. These energy level values are based on the publications 25,[39][40][41].…”

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confidence: 99%

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High-performance organic broadband photomemory transistors exhibiting remarkable UV-NIR response

Luo

et al. 2016

Phys. Chem. Chem. Phys.

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The electrical and optical properties of organic semiconductors have improved rapidly in recent years, rendering them highly promising for various optoelectronic applications owing to low-cost and lightweight potential in combination with spectral tunability and long photocarrier lifetimes. Organic photomemory has emerged as an innovative application to achieve optical data storage. However, practical operation requires universal device design with broader spectral response in terms of related materials, interfaces and architecture, a task that remains a significant challenge. Herein, we present a universal strategy to fabricate organic broadband photomemories featuring remarkable UV-NIR response, thereby providing optical switching ability with a controllable memory window. To the best of our knowledge, this study demonstrates an excellent performance with the broadest response spectra and the highest photomemory efficiency of up to 593%. We systematically study the charge trapping mechanism and photoinduced injection enhancement by combining an energy level model with theoretical calculations, characterizing conceivable photogenerated minority carrier trapping and accumulation kinetics. Thus, it is anticipated that the proposed approach will be a starting point for further research, resulting in high-performance organic photomemory ideal for digital commutation between optical and electric signals.

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Section: Theoretical Analysis and Explanationmentioning

confidence: 99%

Section: Theoretical Analysis and Explanationmentioning

confidence: 99%

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High-performance organic broadband photomemory transistors exhibiting remarkable UV-NIR response

Luo

et al. 2016

Phys. Chem. Chem. Phys.

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Functionalized SiC nanocrystals for tuning of optical, thermal, mechanical and electrical properties of polyvinyl alcohol

et al. 2017

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Physical Properties of Polyacrylamide/Polyvinylalcohol Silica Nanocomposites

Abulyazied¹,

Mansour²,

Mazrouaa³

et al. 2016

J. Res. Updates Polym. Sci.

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In this paper, samples of Polyacrylamide (PAAm) nanosilica nanocomposites were prepared having different concentration of nanosilica (0.125, 0.25, and 0.5). Polyacrylamide (PAAm) and poly (vinyl alcohol) (PVA) were blended with different ratio (3/1, 1/1, 1/3) using solution-cast technique. The prepared films were characterized by Fourier transform infrared (FTIR), X-ray diffractions (XRD) and scanning electron microscopy (SEM). FTIR spectra showed the presence of hydrogen bonding between-CONH2 groups in PAAm and-OH group in PVA and confirm the hydrophilic nature of the blends. X-ray diffractions shows the presence of a strong broad peak centered at 22º (2) confirms the amorphous nature of silica which is supposed to be the characteristic of SiO2. The results obtained from different experimental techniques were supported by SEM image analysis. The thermal stability of the nanocomposites enhanced by increasing the silica content in the blend. The DC electrical conductivity was studied for all prepared samples. It was found that the conductivity increase by increasing silica content as well as, increased by increasing the wt% of PVA.

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Tunable electrophysical properties of composites nano-CdS/polyvinyl alcohol

Cited by 3 publications

References 21 publications

High-performance organic broadband photomemory transistors exhibiting remarkable UV-NIR response

High-performance organic broadband photomemory transistors exhibiting remarkable UV-NIR response

Functionalized SiC nanocrystals for tuning of optical, thermal, mechanical and electrical properties of polyvinyl alcohol

Physical Properties of Polyacrylamide/Polyvinylalcohol Silica Nanocomposites

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