Ambient Method for the Production of an Ionically Gated Carbon Nanotube Common Cathode in Tandem Organic Solar Cells

作者：Cook Alexander B; Yuen Jonathan D; Micheli Joseph W; Nasibulin Albert G; Zakhidov Anvar^*

来源：Jove-Journal of Visualized Experiments, 2014, (93): e52380.

DOI：10.3791/52380

• Physics
• Issue 93
• Organic Photovoltaic
• Carbon Nanotubes
• Ionic Liquid
• Tandem Photovoltaic
• Conjugated Polymers
• Ambient Processing

A method of fabricating organic photovoltaic (OPV) tandems that requires no vacuum processing is presented. These devices are comprised of two solution-processed polymeric cells connected in parallel by a transparent carbon nanotubes (CNT) interlayer. This structure includes improvements in fabrication techniques for tandem OPV devices. First the need for ambient-processed cathodes is considered. The CNT anode in the tandem device is tuned via ionic gating to become a common cathode. Ionic gating employs electric double layer charging to lower the work function of the CNT electrode. Secondly, the difficulty of sequentially stacking tandem layers by solution-processing is addressed. The devices are fabricated via solution and dry-lamination in ambient conditions with parallel processing steps. The method of fabricating the individual polymeric cells, the steps needed to laminate them together with a common CNT cathode, and then provide some representative results are described. These results demonstrate ionic gating of the CNT electrode to create a common cathode and addition of current and efficiency as a result of the lamination procedure.

• 出版日期2014-11