Photoconductive Piezoelectric Polymer Made From a Composite of P(VDF-TrFE) and TiOPc

Chang, Wen‐Yi; Wang, Anbang; Lee, Chih‐Kung; Chen, Han-Lung; Ko, W. H.; Lin, Chih‐Ting

doi:10.1080/00150193.2013.820974

Cited by 13 publications

(10 citation statements)

References 11 publications

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“…The gaps of the P(VDF-TrFE) and TiOPc blended composite from the lowest unoccupied (LUMO) to the highest occupied (HOMO) molecular orbitals decreases. When the systems are excited by light, the molecular orbitals of the P(VDF-TrFE) tuned by TiOPc allow more transfers of the local charges for piezoelectricity [8,15]. Hence, the photo-sensitivity, reported here, has facilitated the aforementioned optical manipulation.…”

Section: As ( ) Is Illuminated By Visible Light As ( )mentioning

confidence: 94%

“…Similarly, the slopes of (3 1 0) change from −1.46×10 figure 2(b). To understand why there are stronger piezo effects in both (1 1 0) and (3 1 0) planes subjected to light illumination, our complimentary visible light absorbance spectra show different visible light absorbance [8,15].…”

Section: As ( ) Is Illuminated By Visible Light As ( )mentioning

confidence: 99%

“…Recently, Chang et al blended a semi-crystalline poly (vinylidene fluoride-co-trifluoro-ethylene) piezoelectric P(VDFTrFE) polymer with nano particles of titanium oxide phthalocyanine (TiOPc) [8]. The TiOPc nano particles can harvest visible light to excite electrons.…”

Section: Introductionmentioning

confidence: 99%

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Using in-situ synchrotron x-ray diffraction to investigate phase transformation and lattice relaxation of a three-way piezo-phototronic soft material

Hsu

Weng

et al. 2017

Semicond. Sci. Technol.

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A poly(vinylidene fluoride-co-trifluoro-ethylene) piezoelectric polymer is blended with nano particles of titanium oxide phthalocyanine to bridge photoconductive and piezoelectric effects. In this study, a system is examined by in situ synchrotron x-ray to test a three-way piezophototronic soft-material design. The sample is heated for in situ phase transformation characterization. The semi-crystalline poly (vinylidene fluoride-co-trifluoro-ethylene) polymer gradually transforms to an amorphous structure. A complementary piezoelectric experiment before and after the heating experiment shows that the piezoelectric performance is proportional to the phase ratio. Secondly, the system is examined to test its phototronic effect. Piezoelectric responses are measured by controlling the light illumination. The positive and negative controls of light illumination which validate this newly-designed system can be modulated by a three-way piezo-phototronic effect. In-situ synchrotron x-ray diffraction experiments are employed to measure the microstructure evolution as a function of applied voltage up to 800 V. We then Semiconductor Science and Technology

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Section: As ( ) Is Illuminated By Visible Light As ( )mentioning

confidence: 94%

Section: As ( ) Is Illuminated By Visible Light As ( )mentioning

confidence: 99%

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Using in-situ synchrotron x-ray diffraction to investigate phase transformation and lattice relaxation of a three-way piezo-phototronic soft material

Hsu

Weng

et al. 2017

Semicond. Sci. Technol.

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“…To obtain a better understanding of the piezo‐phototronics for this class of soft materials, we have designed an in situ X‐ray experiment to study the piezo‐phototronic effect on piezoelectric P(VDF–TrFE) (poly(vinylidene fluoride‐co‐trifluoroethylene)) blended with photoconductive TiOPc (titanium oxide phthalocyanine) nanoparticles. This is a new class of piezo‐phototronic composite that has been reported previously . This composite not only has good piezoelectric properties but also shows high sensitivity to visible light.…”

mentioning

confidence: 84%

“…To apply the concept of piezo‐phototronics reversely, Shih et al have introduced the concept of photo‐sensitive carrier activities, i.e., the optoelectronics, for tuning the piezoelectric properties of piezotronic devices via the bulk piezopotential . Hence, polymer‐based piezo‐phototronics could potentially enable new applications in wearable electronics and many other flexible electronics …”

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confidence: 99%

Visible‐Light Modulation on Lattice Dielectric Responses of a Piezo‐Phototronic Soft Material

et al. 2015

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In situ synchrotron X-ray diffraction is used to investigate a three-way piezo-phototronic soft material. This new system is composed of a semi-crystalline poly(vinylidene fluoride-co-trifluoroethylene) piezoelectric polymer and titanium oxide nanoparticles. Under light illumination, photon-induced piezoelectric responses are nearly two times higher at both the lattice-structure and the macroscopic level than under conditions without light illumination. A mechanistic model is proposed.

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Flexible Hybrid Piezoelectric‐Electrostatic Device for Energy Harvesting and Sensing Applications

Zhang

Kwon

et al. 2023

Adv Materials Inter

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Converting mechanical energy from either the ambient environment or the human body motions to the useful electrical energy will revolutionize power solutions for flexible electronics. Here, a hybrid energy harvesting strategy is reported, which combines porous polymeric piezoelectric film with an electrostatic layer as an integration for converting the mechanical energy into electrical energy. The piezoelectric materials through engineered microstructures are developed to enhance energy generation due to the higher compressibility and larger surface contact area. The electrostatic effect from the charged layer further contributes to the generation of electrical charges. By directly coating the stretchable carbon nanotubes onto the elastomers, more intimate integration of the hybrid energy harvesters enables the designs for complex electronics. Such flexible hybrid piezoelectric‐electrostatic device exhibits superior energy harvesting performance with a voltage output of 1.95 V, which improves 30% and 100% compared to the electrostatic and piezoelectric alone device, respectively. Experiments are also performed to demonstrate the implementation of the hybrid device's energy conversion to power small electronics and recognition of different body motions. Such hybrid strategy provides a new solution toward future energy revolution for flexible electronics.

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Photoconductive Piezoelectric Polymer Made From a Composite of P(VDF-TrFE) and TiOPc

Cited by 13 publications

References 11 publications

Using in-situ synchrotron x-ray diffraction to investigate phase transformation and lattice relaxation of a three-way piezo-phototronic soft material

Using in-situ synchrotron x-ray diffraction to investigate phase transformation and lattice relaxation of a three-way piezo-phototronic soft material

Visible‐Light Modulation on Lattice Dielectric Responses of a Piezo‐Phototronic Soft Material

Flexible Hybrid Piezoelectric‐Electrostatic Device for Energy Harvesting and Sensing Applications

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