Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences; National Center for Nanoscience and Technology (NCNST) , Beijing 100083, People's Republic of China.
School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0245, United States.
ACS Nano. 2016 Nov 22;10(11):10331-10338. doi: 10.1021/acsnano.6b06049. Epub 2016 Nov 1.
The pyro-phototronic effect is based on the coupling among photoexcitation, pyroelectricity, and semiconductor charge transport in pyroelectric materials, which can be utilized to modulate photoexcited carriers to enhance the output performance of solar cells. Herein, we have demonstrated the largely enhanced output performance of a P3HT/ZnO nanowire array photovoltaic cell (PVC) by using the pyro-phototronic effect under weak light illuminations. By applying an external cooling temperature variation, the output current and voltage of the PVC can be dramatically enhanced by 18% and 152% under indoor light illumination, respectively. This study realizes the performance enhancement of pyroelectric semiconductor materials-based solar cells via a temperature-variation-induced pyro-phototronic effect, which may have potential applications in solar energy scavenging and self-powered sensor systems.
热光电效应基于热释电材料中光激发、热释电和半导体电荷输运的耦合，可以利用它来调制光激发载流子，从而提高太阳能电池的输出性能。在此，我们通过在弱光照射下利用热光电效应，证明了 P3HT/ZnO 纳米线阵列光伏电池（PVC）的输出性能得到了极大的提高。通过施加外部冷却温度变化，可以分别将室内光照射下 PVC 的输出电流和电压提高 18%和 152%。本研究通过温度变化诱导的热光电效应实现了热释电半导体材料基太阳能电池的性能提升，这可能在太阳能收集和自供电传感器系统中有潜在的应用。
