Local Polarization Switching Kinetics in Thin-Film P(VDF-TrFE) (76:24) Studied by Time-Resolved LIMM

被引：1

作者：

Putzeys, Tristan ^{[1
,2
]}

Wubbenhorst, Michael ^{[1
]}

机构：

[1] Katholieke Univ Leuven, Lab Soft Matter & Biophys, Dept Phys & Astron, Leuven, Belgium

[2] Katholieke Univ Leuven, Res Grp Expt Otorhinolaryngol, Dept Neurosci, Leuven, Belgium

来源：

IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION | 2018年 / 25卷 / 03期

关键词：

Pyroelectricity; ferroelectric films; kinetics; LIMM; photothermal effects; sequential frequency modulation; SPACE-CHARGE; FERROELECTRIC PROPERTIES; PVDF FILMS; FLUORIDE; DISTRIBUTIONS; COPOLYMERS;

D O I：

10.1109/TDEI.2018.007441

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Extending the well-established laser intensity modulation method (LIMM) by means of sequential frequency modulation represents a new approach for obtaining polarization depth profiles at both high spatial (nanometer) and temporal (millisecond) resolution. Thin films of the archetypal, organic, ferroelectric copolymer poly(vinylidene fluoride-co-trifluoroethylene) P(VDF-TrFE) were investigated in this manner to assess local switching kinetics. For subcoercive field conditions of 5 MV/m, the central regions of 2000 nm thick samples show a "bulk"-like, uniform polarization switching behaviour at a time-scale of 250 ms. In contrast, a 100 nm thick region near the metal-polymer interface reveals clear deviations from bulk switching kinetics. This likely reflects local charge generation/injection and trapping effects.

引用

页码：835 / 839

页数：5

共 23 条

[1] Basset D. C., 1982, DEV CRYSTALLINE POLY, V1, P195
[2] ELECTRIC FIELD-INDUCED GAS EMISSION FROM PVDF FILMS
BIHLER, E
HOLDIK, K
EISENMENGER, W
[J]. IEEE TRANSACTIONS ON ELECTRICAL INSULATION, 1987, 22 (02): : 207 - 210
[3] Bihler E., 1990, 1990 Annual Report: Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.90CH2919-9), P140, DOI 10.1109/CEIDP.1990.201333
[4] Eisenmenger W, 1999, BRAZ J PHYS, V29, P295, DOI 10.1590/S0103-97331999000200011
[5] FERROELECTRIC PROPERTIES OF VINYLIDENE FLUORIDE COPOLYMERS
FURUKAWA, T
[J]. PHASE TRANSITIONS, 1989, 18 (3-4) : 143 - 211
[6] Factors governing ferroelectric switching characteristics of thin VDF/TrFE copolymer films
Furukawa, Takeo
Nakajima, Takashi
Takahashi, Yoshiyuki
[J]. IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION, 2006, 13 (05) : 1120 - 1131
[7] True ferroelectric switching in thin films of trialkylbenzene-1,3,5-tricarboxamide (BTA)
Gorbunov, A. V.
Putzeys, T.
Urbanaviciute, I.
Janssen, R. A. J.
Wubbenhorst, M.
Sijbesma, R. P.
Kemerink, M.
[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2016, 18 (34) : 23663 - 23672
[8] FERROELECTRICITY IN POLYVINYLIDENE FLUORIDE
KEPLER, RG
ANDERSON, RA
[J]. JOURNAL OF APPLIED PHYSICS, 1978, 49 (03) : 1232 - 1235
[9] LASER-INTENSITY-MODULATION METHOD - A TECHNIQUE FOR DETERMINATION OF SPATIAL DISTRIBUTIONS OF POLARIZATION AND SPACE-CHARGE IN POLYMER ELECTRETS
LANG, SB
DASGUPTA, DK
[J]. JOURNAL OF APPLIED PHYSICS, 1986, 59 (06) : 2151 - 2160
[10] Thermal-Pulse Tomography of Space-charge and Polarization Distributions in Electret Polymers
Mellinger, Axel
Flores-Suarez, Rosaura
Singh, Rajeev
Wegener, Michael
Wirges, Werner
Gerhard, Reimund
Lang, Sidney B.
[J]. INTERNATIONAL JOURNAL OF THERMOPHYSICS, 2008, 29 (06) : 2046 - 2054

← 1 2 3 →