Temperature field analysis for PZT pyroelectric cells for thermal energy harvesting.
Temperature field analysis for PZT pyroelectric cells for thermal energy harvesting.
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DOI:
10.3390/s111110458
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发表时间:
2011
期刊:
影响因子:
--
通讯作者:
Lee CY
中科院分区:
文献类型:
--
作者:
Hsiao CC;Ciou JC;Siao AS;Lee CY
This paper proposes the idea of etching PZT to improve the temperature variation rate of a thicker PZT sheet in order to enhance the energy conversion efficiency when used as pyroelectric cells. A partially covered electrode was proven to display a higher output response than a fully covered electrode did. A mesh top electrode monitored the temperature variation rate and the electrode area. The mesh electrode width affected the distribution of the temperature variation rate in a thinner pyroelectric material. However, a pyroelectric cell with a thicker pyroelectric material was beneficial in generating electricity pyroelectrically. The PZT sheet was further etched to produce deeper cavities and a smaller electrode width to induce lateral temperature gradients on the sidewalls of cavities under homogeneous heat irradiation, enhancing the temperature variation rate.
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