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Temperature Effects on PN Junctions in Piezoelectric Semiconductor Fibers with Thermoelastic and Pyroelectric Couplings
- Source :
- Journal of Electronic Materials. 49:3140-3148
- Publication Year :
- 2020
- Publisher :
- Springer Science and Business Media LLC, 2020.
-
Abstract
- We examine the effects of a uniform temperature change on PN junctions in piezoelectric semiconductor fibers. A one-dimensional model for thermally induced extensional deformation of the fibers derived previously from the macroscopic theory of thermopiezoelectric semiconductors is employed. With the linearized model, we present the analytical expressions of the built-in potential, carrier distribution, electric field, and polarization field in piezoelectric semiconductor PN junctions. A combined analytical and numerical analysis is performed on the built-in electromechanical fields in the junctions and their current–voltage relations. Numerical results show that homogeneous junctions have relatively good temperature stability, but heterogeneous junctions are sensitive to a temperature change that may be explored for thermally manipulating piezotronic devices. The difference between the temperature behaviors of the two types of junctions is determined to be due to the net amount of effective polarization charges at the junctions through pyroelectric and combined thermoelastic-piezoelectric couplings.
- Subjects :
- 010302 applied physics
Materials science
Solid-state physics
Condensed matter physics
business.industry
02 engineering and technology
Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
021001 nanoscience & nanotechnology
Condensed Matter Physics
Polarization (waves)
01 natural sciences
Piezoelectricity
Electronic, Optical and Magnetic Materials
Pyroelectricity
Condensed Matter::Materials Science
Semiconductor
Thermoelastic damping
Condensed Matter::Superconductivity
Electric field
0103 physical sciences
Thermal
Materials Chemistry
Electrical and Electronic Engineering
0210 nano-technology
business
Subjects
Details
- ISSN :
- 1543186X and 03615235
- Volume :
- 49
- Database :
- OpenAIRE
- Journal :
- Journal of Electronic Materials
- Accession number :
- edsair.doi...........ca3cab8c10878fb7c5c2ec16f2c9ff37