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:
Sensors (Basel, Switzerland)
影响因子:
--
通讯作者:
Lee CY
Lee CY
中科院分区:
其他
文献类型:
--
作者:
Hsiao CC;Ciou JC;Siao AS;Lee CY

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本文提出蚀刻PZT的想法,以改善较厚的PZT片的温度变化率,从而提高用作热释电电池时的能量转换效率。事实证明,部分覆盖的电极比完全覆盖的电极显示出更高的输出响应。网状顶部电极监测温度变化率和电极面积。网状电极宽度影响较薄热释电材料中温度变化率的分布。然而,具有较厚热释电材料的热释电电池有利于热释电发电。对PZT片进行进一步刻蚀,产生更深的空腔和更小的电极宽度,在均匀热照射下在空腔侧壁上产生横向温度梯度,提高温度变化率。
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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