Power-Source-Free Analysis of Pyroelectric Energy Conversion
| Autor: | Xian Chen, Eckhard Quandt, Chenbo Zhang, Maike Wegner, Yintao Song |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
General Physics and Astronomy 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Imaging phantom Pyroelectricity Polarization density 0103 physical sciences medicine Figure of merit Energy transformation medicine.symptom Atomic physics 010306 general physics 0210 nano-technology Device parameters Confusion |
| Zdroj: | Physical Review Applied. 12 |
| ISSN: | 2331-7019 |
| DOI: | 10.1103/physrevapplied.12.014063 |
| Popis: | A $p\phantom{\rule{0}{0ex}}y\phantom{\rule{0}{0ex}}r\phantom{\rule{0}{0ex}}o\phantom{\rule{0}{0ex}}e\phantom{\rule{0}{0ex}}l\phantom{\rule{0}{0ex}}e\phantom{\rule{0}{0ex}}c\phantom{\rule{0}{0ex}}t\phantom{\rule{0}{0ex}}r\phantom{\rule{0}{0ex}}i\phantom{\rule{0}{0ex}}c$ material's electric polarization depends on temperature, and this effect can play an important role in converting waste heat to electricity. However, the electricity actually converted by such a device is often confused with the external applied power. The authors present a thermodynamic analysis that specifically and unambiguously eliminates this confusion, and propose a pyroelectric figure of merit that separates the contributions from material properties and device parameters. Their insight will promote both materials development for and optimal design of devices for pyroelectric energy harvesting. |
| Databáze: | OpenAIRE |
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