Photosensitive ferroelectric polymer composite film and preparation method thereof, and ferroelectric device or piezoelectric device using composite film

A composite film and polymer technology, applied in the field of flexible electronics and optoelectronic materials, can solve the problems of damage to the mechanical flexibility of materials, the inability to have both flexibility and strong polarization, and the limited increase in electric polarization strength, and achieve both ferroelectricity , stable luminescent properties, simple and easy preparation method

Active Publication Date: 2021-12-17
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, no matter whether it is through molecular structure design or through composite strategies to improve the performance of the electric polarization strength, the increase in the electric polarization stren

Method used

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  • Photosensitive ferroelectric polymer composite film and preparation method thereof, and ferroelectric device or piezoelectric device using composite film
  • Photosensitive ferroelectric polymer composite film and preparation method thereof, and ferroelectric device or piezoelectric device using composite film
  • Photosensitive ferroelectric polymer composite film and preparation method thereof, and ferroelectric device or piezoelectric device using composite film

Examples

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Example Embodiment

[0109] A second aspect of the present invention provides a method for producing a composite film comprising (1) organic and inorganic salts is dissolved in an organic solvent, the step of obtaining a perovskite precursor solution; (2) the perovskite Add mineral precursor solution of the polymer matrix powder and stirred perovskite precursor - a polymer mixed solution step; step (3) the mixed solution is preheated, the preheating of the mixed solution is obtained; and (4 ) casting the mixed solution after the preheating step of obtaining a coating film; (5) the coated film was dried in vacuo to obtain a composite film step.

[0110] (1) The organic and inorganic salts dissolved in an organic solvent to obtain the perovskite precursor solution step

[0111] The organic salts may include organic halide salts, organic halide salt may include a salt of an organic cation and a halogen ion. The organic cations may include CH 3 NH 3 + CH (NH) 2 ) 2 + , C 4 Hide 12 N + , C 16 Hide 36 N +...

Example Embodiment

[0130]

[0131] The MAPB / PVDF-1 composite film having a MAPB content of 1% by mass was prepared by the following steps:

[0132] (1) PVDF will be stored (Shanghai Sanlifu New Material Co., Ltd., molecular weight 5 × 10 5 g / mol, density 1.77g / cm 3 The glass-wide mouth bottle of the powder is open in an air blower of 80 ° C, and the trace water adsorbed in the polymer is continuously placed in 12 hours.

[0133] (2) As shown in Table 1, 0.00472 g of methamine bromide in the glass dryer is precisely referred to in the glass dryer (CH 3 NH 3 Br, ie, MABR, White Crystal, Xi'an Baolete Optoelectronics Particle Co., Ltd.) and 0.01548 g of bromide lead (PBBR 2 , White Powder, Aladin Reagent Co., Ltd., is placed in a 50ml beaker, adding 20 ml of N, N-dimethylformamide (hereinafter referred to as "DMF", Beijing Chemical Plant), and uses medium speed magnetic force at room temperature Stir for 10 minutes until completely dissolved.

[0134] (3) Improve the magnetic stirring speed to r...

Example Embodiment

[0159]

[0160] The addition amount of bromide and bromine methylamine changes lead raw materials shown in Table 1 to vary the filler content of the composite particles in the film than in the same manner as in Example 1 Production Example 2 Composite films MAPB / PVDF-2 . The same composite film Test Example 1 embodiment. The results are shown in Tables 2 to 5.

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Abstract

The invention relates to a photosensitive ferroelectric polymer composite film and a preparation method thereof, and a ferroelectric device or a piezoelectric device using the composite film. The composite film comprises an organic flexible polymer matrix and inorganic-organic hybrid perovskite filler particles, wherein the content of the filler particles relative to the total mass of the composite film is 1%-5% by mass, and the filler particles exist in the matrix in a monodisperse state.

Description

technical field [0001] The invention relates to a composite film comprising an organic flexible polymer matrix and organic-inorganic hybrid perovskite filler particles, and a preparation method thereof, belonging to the field of flexible electronics and optoelectronic materials. Background technique [0002] Flexible electronics is a highly cross-integrated subversive form of technology, which surpasses classical electronic systems in terms of apparent mechanical flexibility and greatly expands the application range of electronic devices. Ferroelectric materials have rich physical connotations due to the strong lattice-charge correlation, and exhibit ferroelectricity, piezoelectricity, and pyroelectricity. They are widely used in the fields of information storage and energy conversion, and are an important class of smart materials. Ferroelectric ceramics have excellent ferroelectric and piezoelectric properties, but their brittleness severely limits their applications in fle...

Claims

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Application Information

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IPC IPC(8): C08L27/16C08K5/17C08J5/18H01L41/18H01L41/37
CPCC08J5/18C08J2327/16C08K5/17C08K2201/005H10N30/852H10N30/092Y02E10/549
Inventor 王瑶黄辰张凌宇成子巍邓元
Owner BEIHANG UNIV
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