Preparationof fabric-like transparent electrodefor flexible perovskite solar cell

Flexible transparent electrode is an irreplaceable part of flexible solar cells. The polyurethane/polyacrylonitrile nanofibers film loaded with silver nanowire network was fabricated and served as a transparent fabric-like electrode. This fabric-like transparent electrode shows promising flexibility and well stretchability. It possesses a light transmission of 80% in the visible range, and its bending radius is less than one millimeter with a break strain of 70%. This transparent fabric-like electrode retains its original charge transport property during being appropriately stretched and bent. Hence, the electrode was employed to assemble perovskite solar cells. As a result, a 4.06% conversion efficiency was obtained. More importantly, the devices maintained above 85% its original efficiency under the bending radius of 3 millimeter.

Automated summary

This study successfully prepared a flexible transparent electrode combining polyurethane/polyacrylonitrile nanofibers film with silver nanowire network, which has good flexibility and light transmittance. The perovskite solar cells were assembled with this electrode, achieving a conversion efficiency of 4.06% and maintaining over 85% of the original efficiency under a bending radius of 3 millimeters.