Interest of binary PMMA/P(VDF–TrFE) blend thin films

Bornand, V.; Vacher, C.; Collet, André; Papet, Philippe

doi:10.1016/j.matchemphys.2009.05.028

Cited by 10 publications

(11 citation statements)

References 15 publications

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“…It is well accepted that current leakage can greatly degrade polarization retention in ferroelectric films [21]. Since PMMA addition effectively decreases leakage current (Fig.3(b)), improved polarization retention in PMMA/P(VDF-TrFE) phase is expected [8,12]. In fact, this improvement was also experimentally determined in ferroelectricinsulator-semiconductor capacitors [13].…”

Section: Resultsmentioning

confidence: 76%

“…The PMMA-addition-induced decrease of leakage current, shown in Fig.3(b), can be attributed to two factors. First, as for phase III, PMMA addition effectively improves surface roughness and thus decreases leakage current, as have been approved in some work on PMMA/P(VDF-TrFE) blend films [8,12,13]. Second, PMMA-rich phase II is insulating layer, which effectively limits the current from semiconducting P3HTrich phase I.…”

Section: Resultsmentioning

confidence: 96%

“…Phase separation occurs when PMMA content is larger than 30%, resulting in a rough surface topology [10,11]. Due to the miscibility of P(VDF-TrFE) and PMMA, small amount of PMMA addition into P(VDF-TrFE) could effectively improve interfacial adhesion, retention and electrical fatigue of ferroelectric polymer films [8,12,13]. Furthermore, work on PMMA/P3HT blend films indicated that vertical phase separation occurred and thus resulted in layer separated structure with PMMA layer lying underneath P3HT layer [14−16].…”

Section: Introductionmentioning

confidence: 99%

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Influence of Poly(methyl metacrylate) Addition on Resistive Switching Performance of P3HT/P(VDF-TrFE) Blend Films

Weng

Zhang

et al. 2017

Chinese Journal of Chemical Physics

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Organic semiconducting/ferroelectric blend films attracted much attention due to their electrical bistability and rectification properties and thereof the potential in resistive memory devices. Blend films were usually deposited from solution, during which phase separation occurred, resulting in discrete semiconducting phase whose electrical property was modulated by surrounding ferroelectric phase. However, phase separation resulted in rough surface and thus large leakage current. To further improve electrical properties of such blend films, poly(methyl metacrylate) (PMMA) was introduced as additive into P3HT/P(VDF-TrFE) semiconducting/ferroelectric blend films in this work. It indicated that small amount of PMMA addition could effectively enhance the electrical stability to both large electrical stress and electrical fatigue and further improve retention performance. Overmuch PMMA addition tended to result in the loss of resistive switching property. A model on the configuration of three components was also put forward to well understand our experimental observations.

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Section: Resultsmentioning

confidence: 76%

Section: Resultsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of Poly(methyl metacrylate) Addition on Resistive Switching Performance of P3HT/P(VDF-TrFE) Blend Films

Weng

Zhang

et al. 2017

Chinese Journal of Chemical Physics

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“…In all cases, the relative permittivities are virtually independent of frequency, which is remarkable compared to the significant frequency dependence of PVDFbased materials. [19][20][21]24,46,47 Figure 6a more clearly shows the increase of relative permittivity with PTTEMA wt %; the increase is linear for the block copolymers and (approximately) quadratic for the blends. At lower PTTEMA weight percentages (18% and 40%), the block copolymers have higher relative permittivities than the polymer blends at the same PTTEMA wt %.…”

Section: Resultsmentioning

confidence: 95%

“…19 −25 In general, blends involving PVDF and related fluorine-containing copolymers produce high ε r values, but the dielectric losses are high as well. 19−26 Polymer blending studies involving PVDF-based polymers with non-fluorinecontaining polymers 19,21,22,25 aim to reduce dielectric loss but with only limited success. 21 Another all-polymer approach explores percolative dielectric composites 26−33 prepared by dispersing conductive organic domains in an insulating polymer matrix.…”

Section: Introductionmentioning

confidence: 99%

Terthiophene-Containing Copolymers and Homopolymer Blends as High-Performance Dielectric Materials

Islam

Qiao

Tang

et al. 2015

ACS Appl. Mater. Interfaces

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This work explores the dielectric and polarization properties of block copolymers and homopolymer blends containing a terthiophene-rich, electronically polarized block (PTTEMA) and an insulating polystyrene block (PS). PTTEMA-b-PS block copolymers were synthesized by reverse addition-fragmentation chain transfer (RAFT) polymerization, and PTTEMA/PS homopolymer blends with the same PTTEMA weight percentages were produced by solution blending. DSC and XRD characterization show that crystallinity increases with PTTEMA content, indicating the presence of terthiophene-rich crystalline domains. Under an applied electric field, these domains are electronically polarized, but the insulating PS block inhibits current leakage, resulting in enhanced dielectric properties. Impedance measurements show that relative permittivity increases with PTTEMA content. The permittivity values are higher in PTTEMA-b-PS copolymers with moderate PTTEMA content due to the ability of the PS block to inhibit PTTEMA association, resulting in a higher density of isolated, terthiophene-rich polarizable domains. Freestanding PTTEMA/PS blend films containing up to 40 wt % PTTEMA have almost 40% greater recoverable energy density compared to pure PS films polarized to the same electric field strength.

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Tuning Ferroelectric Response of Electroactive Materials by Controlling Multilayered Structures to Achieve Excellent Energy Storage Performance

Zhong

Ju²,

et al. 2022

Adv Eng Mater

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Inexpensive, high discharge energy storage dielectric capacitors based on polymers and polymer nanocomposites show great prospects in modern electrical power systems, such as electrified aircraft, renewable energy, and electromagnetic repulsion systems. [1][2][3][4][5] However, their relatively low discharge energy density compared to that of electrochemical capacitors and batteries limits their applications. [6][7][8][9] For instance, the most popular polymer for film capacitors is biaxially oriented polypropylene (BOPP). The easy preparation methods, the developed preparation technology, and the low cost of BOPP beat other polymers in some practical applications requiring relatively low energy density. BOPP only possesses a low energy density of %2-3 J cm À3 at a high applying electric field of 6000 kV cm À1 . [10][11][12] With the miniaturization of electrical systems becoming more and more important, the application of BOPP will be limited. There is an urgent need to store huge energy in capacitors of super small sizes. Hence, preparation strategies and methods to enhance the energy storage performance of polymer dielectric capacitors have been extensively studied.A dielectric capacitor consists of a pair of electrodes and an inner dielectric material as storage media, which become polarized and depolarized under the application and removal of an external electric field, respectively. Its discharge energy density (U e ) can be calculated using the formula U e ¼ ∫ D max 0

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Interest of binary PMMA/P(VDF–TrFE) blend thin films

Cited by 10 publications

References 15 publications

Influence of Poly(methyl metacrylate) Addition on Resistive Switching Performance of P3HT/P(VDF-TrFE) Blend Films

Influence of Poly(methyl metacrylate) Addition on Resistive Switching Performance of P3HT/P(VDF-TrFE) Blend Films

Terthiophene-Containing Copolymers and Homopolymer Blends as High-Performance Dielectric Materials

Tuning Ferroelectric Response of Electroactive Materials by Controlling Multilayered Structures to Achieve Excellent Energy Storage Performance

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