Temperature Effects on Mobile Charges in Extension of Composite Fibers of Piezoelectric Dielectrics and Non-Piezoelectric Semiconductors

Abstract

We study the redistribution of mobile charge carriers in a composite fiber of piezoelectric dielectrics and non-piezoelectric semiconductors in extensional deformation under a uniform temperature change. The macroscopic theory of piezoelectricity and the drift-diffusion theory of semiconductor are used, coupled by doping and mobile charges. A one-dimensional model for extension is developed. Through a theoretical analysis, it is shown that under a temperature change the mobile charges in the semiconductor redistribute themselves under the polarization and electric field produced through thermoelastic, pyroelectric and piezoelectric effects. The results suggest the possibility of using composite structures for thermally manipulating mobile charges in semiconductors and have potential applications in piezotronics.

Analysis of piezoelectric PN homojunction and heterojunction considering flexoelectric effect and strain gradient

“…areas such as nanogenerators [5][6][7], energy harvesters [8], flexible electrons [9] and so on. Recently, static response [10][11][12][13][14][15][16][17], vibration analysis [18][19][20][21] as well as wave propagation [22,23] related to piezotronics are conducted. In addition, researchers [24,25] give control approaches on the electron energy band of wurtzite PSC structure via mechanical loading based on the kp method.…”

Soldered joints of piezoelectric products

“…Smaller defects cannot be detected with this method. Such a leak test is effective for products with a large internal volume; they annually lose their relevance in connection with the desire of manufacturers of electrical equipment to reduce their overall dimensions (RUORAN CHENG et al, 2019).…”

“…Over time, air enters an unpressurized product and the product parameters go beyond the standards established in the technical conditions. The ingress of leaky piezoelectric products into consumer's equipment leads to serious consequences: replacing cells and blocks or rejecting the equipment (RUORAN CHENG et al, 2018).…”

Soldered Joints of Piezoelectric Products

“…Smaller defects cannot be detected with this method. Such a leak test is effective for products with a large internal volume; they annually lose their relevance in connection with the desire of manufacturers of electrical equipment to reduce their overall dimensions [1]. Another method of leak testing is popular among manufacturers of piezoelectric products; it is used for vacuum products placed in glass-metal cases.…”

“…Over time, air enters an unpressurized product and the product parameters go beyond the standards established in the technical conditions. The ingress of leaky piezoelectric products into consumer's equipment leads to serious consequences: replacing cells and blocks or rejecting the equipment [3].…”