Huge electrocaloric effect in Langmuir-Blodgett ferroelectric polymer thin films
Huge electrocaloric effect in Langmuir-Blodgett ferroelectric polymer thin films
复制标题
Langmuir-Blodgett 铁电聚合物薄膜中巨大的电热效应
DOI：
10.1088/1367-2630/12/2/023035
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发表时间：
2010-02-24
影响因子：
3.3
通讯作者：
Chu, J. H.
中科院分区：
文献类型：
--
作者：
Liu, P. F.;Wang, J. L.;Chu, J. H.
在这项工作中，我们研究了聚偏氟乙烯（PVDF）基的铁电共聚物和铁电薄膜生长，通过LB技术，在聚酰亚胺基板上。LB技术被认为改善了膜质量，即赋予更好的结晶度和更少的寄生非晶相。结果表明，在21K以下，存在可逆的绝热温度变化Δ T。LB膜接近室温的大电热效应表明LB膜在冷却系统中的应用潜力。
In this work, we studied polyvinylidene fluoride (PVDF)-based ferroelectric copolymer and terpolymer films grown, by the Langmuir-Blodgett (LB) technique, on polyimide substrates. The LB technique is believed to improve the film quality, i.e. to confer better crystallinity and less parasitic amorphous phase. As a consequence, a reversible adiabatic temperature change Delta T up to 21K is demonstrated. The large electrocaloric effects of LB films close to room temperature suggest the potential for applying LB films in cooling systems.