Optimization Of PVDF-TrFE Processing Conditions For The Fabrication Of Organic MEMS Resonators

Ducrot, Pierre-Henri; Dufour, Isabelle; Ayela, Cédric

doi:10.1038/srep19426

Cited by 106 publications

(81 citation statements)

References 20 publications

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“…There have been several strategies for improving the surface roughness and morphology of PVDF based films by adding thin insulting layers, micro-patterning, and optimization of annealing conditions [25][26][27].…”

Section: Resultsmentioning

confidence: 99%

Bandlike Transport in Ferroelectric-Based Organic Field-Effect Transistors

Laudari

Guha

2016

Phys. Rev. Applied

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The dielectric constant of polymer ferroelectric dielectrics may be tuned by changing the temperature, offering a platform for monitoring changes in interfacial transport with the polarization strength in organic field-effect transistors (FETs). Temperature dependent transport studies of FETs have been carried out from a solution-processed organic semiconductor, 6,13-bis(triisopropylsilylethynyl)pentacene (TIPS-pentacene), using both ferroelectric and nonferroelectric gate insulators. Non-ferroelectric dielectric based TIPS-pentacene FETs show a clear activated transport in contrast to the ferroelectric dielectric polymer, poly(vinylidene fluoridetrifluoroethylene) (PVDF-TrFE), where a negative temperature coefficient of the mobility is observed in the ferroelectric temperature range. The current-voltage (I-V) characteristics from TIPSpentacene diodes signal a space-charge-limited conduction (SCLC) for a discrete set of trap levels, suggesting that charge injection and transport occurs through regions of ordering in the semiconductor. The carrier mobility extracted from temperature-dependent I-V characteristics from the trap-free SCLC region shows a negative coefficient beyond 200 K, similar to the trend observed in FETs with the ferroelectric dielectric. At moderate temperatures, the polarization fluctuation dominant transport inherent to a ferroelectric dielectric in conjunction with the nature of traps results in an effective de-trapping of the shallow trap states into more mobile states in TIPS-pentacene.

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Section: Resultsmentioning

confidence: 99%

Bandlike Transport in Ferroelectric-Based Organic Field-Effect Transistors

Laudari

Guha

2016

Phys. Rev. Applied

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“…In fact, the OSC layer which acts as the top electrode during polarization is not conductive enough to ensure an equipotential. However, electrical polarization of our fabricated devices exhibits excellent time stability28.…”

Section: Electro-mechanical Transducermentioning

confidence: 90%

Piezoelectric polymer gated OFET: Cutting-edge electro-mechanical transducer for organic MEMS-based sensors

Thuau

Abbas

Wantz

et al. 2016

Sci Rep

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The growth of micro electro-mechanical system (MEMS) based sensors on the electronic market is forecast to be invigorated soon by the development of a new branch of MEMS-based sensors made of organic materials. Organic MEMS have the potential to revolutionize sensor products due to their light weight, low-cost and mechanical flexibility. However, their sensitivity and stability in comparison to inorganic MEMS-based sensors have been the major concerns. In the present work, an organic MEMS sensor with a cutting-edge electro-mechanical transducer based on an active organic field effect transistor (OFET) has been demonstrated. Using poly(vinylidenefluoride/trifluoroethylene) (P(VDF-TrFE)) piezoelectric polymer as active gate dielectric in the transistor mounted on a polymeric micro-cantilever, unique electro-mechanical properties were observed. Such an advanced scheme enables highly efficient integrated electro-mechanical transduction for physical and chemical sensing applications. Record relative sensitivity over 600 in the low strain regime (<0.3%) was demonstrated, which represents a key-step for the development of highly sensitive all organic MEMS-based sensors.

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“…In addition, P(VDF-TrFE) is fully bio-compatible, making it suitable for energy harvesting applications when implanted. P(VDF-TrFE), which can be simply obtained by varying the molar ratio of TrFE in proportion to PVDF, offers several advantages compared to PVDF, including higher piezoelectric coefficient [16], better crystallinity, higher remnant polarization, and higher temperature stability [17,18].…”

Section: Introductionmentioning

confidence: 99%

P(VDF-TrFE) Film on PDMS Substrate for Energy Harvesting Applications

et al. 2018

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Abstract:We have developed and demonstrated a highly flexible P(VDF-TrFE) film-based energy harvesting device on a PDMS substrate, avoiding any complex composites and patterned structures. The structural and electrical properties of the P(VDF-TrFE) film was investigated using multiple characterization techniques and an optimized film of 7 µm thickness was used for the energy harvesting application. The device, with Ti/Ni metal contacts, was driven by a shaker providing an acceleration of 1.75 g, and frequencies varying from 5 to 30 Hz. The energy harvesting performance of the final fabricated device was tested using the shaker, and resulted in a maximum output capacitor voltage of 4.4 V, which successfully powered a set of 27 LEDs after several minutes of charging.

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Optimization Of PVDF-TrFE Processing Conditions For The Fabrication Of Organic MEMS Resonators

Cited by 106 publications

References 20 publications

Bandlike Transport in Ferroelectric-Based Organic Field-Effect Transistors

Bandlike Transport in Ferroelectric-Based Organic Field-Effect Transistors

Piezoelectric polymer gated OFET: Cutting-edge electro-mechanical transducer for organic MEMS-based sensors

P(VDF-TrFE) Film on PDMS Substrate for Energy Harvesting Applications

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