Fully solution-processed, light-weight, and ultraflexible organic solar cells

Abstract Organic photovoltaic (OPV) devices have the potential to be superior other PV technologies for use in applications that require very high flexibility or maximum specific power (power-per-weight ratio), such as textile integration, wearable electronics, outer space applications. However, OPV also encapsulation by barrier films reduce degradation driven extrinsic factors, which turn limits their and leads lower values. In this work, fully solution-processed (including both electrodes) semitransparent organic solar cells (OSCs) with performance comparable conventional indium tin oxide-based are processed directly onto different of varying thicknesses. Direct cell fabrication elimination additional polyethylene terephthalate substrate one two adhesive layers final stack an encapsulated device replacing industrial state-of-the-art sandwich a top-only process, yields significantly thinner lighter ‘product-relevant’ devices. addition increase 0.38 W g ?1 , is more than four times higher sandwich-encapsulated devices, these novel OSCs exhibit better survive 5000 bending cycles 4.5 mm radius. Moreover, show stability conventionally under constant illumination (1 sun) ambient air 1000 h. Finally, damp heat conditions (65 °C, 85% rh) was investigated found determined combination namely (UV) light soaking, intrinsic properties, damaging barriers during (laser) processing.