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

E-Wen Huang; Yu-Hsiang Hsu; Wei-Tsung Chuang; Wen-Ching Ko; Chung-Kai Chang; Chih-Kung Lee; Wen-Chi Chang; Tzu-Kang Liao; Hao Cheng Thong

doi:10.1002/adma.201503325

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

Adv Mater. 2015 Dec 16;27(47):7728-33. doi: 10.1002/adma.201503325. Epub 2015 Oct 19.

Authors

E-Wen Huang¹, Yu-Hsiang Hsu², Wei-Tsung Chuang³, Wen-Ching Ko⁴, Chung-Kai Chang³, Chih-Kung Lee², Wen-Chi Chang², Tzu-Kang Liao⁵, Hao Cheng Thong¹

Affiliations

¹ Department of Materials Science and Engineering, National Chiao Tung University, 1001 University Road, Hsinchu, Taiwan, 30010, Taiwan (R.O.C.).
² Institute of Applied Mechanics, National Taiwan University, 1, Sec. 4, Roosevelt Road, Taipei, 106, Taiwan (R.O.C.).
³ National Synchrotron Radiation Center, 101, Hsin-Ann Road, Hsinchu Science Park, Hsinchu, 30076, Taiwan (R.O.C.).
⁴ Green Energy and Eco-Technology System Center, Industrial Technology Research Institute, ITRI Southern Campus, Tainan City, 70955, Taiwan (R.O.C.).
⁵ Department of Chemical and Materials Engineering, National Central University, No. 300, Zhongda Rd., Zhongli District, Taoyuan City, 32001, Taiwan (R.O.C.).

PMID: 26480289
DOI: 10.1002/adma.201503325

Abstract

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.

Keywords: in-situ synchrotron X-ray diffraction; photoconductive materials; piezo-phototronic materials; piezoelectric materials; visible light modulation.