Improvement of photovoltaic performance and stability of AnE-PV:PCBM based organic solar cells using solution processed inverted geometry

•AnE-PVstat:PCBM was successfully used as active layer conventional and inverted type solar cells.•TiO2 films of used as electron conducting layers for inverted geometry.•The PCE of solar cells increased from 1.7% to 2.59% when inverted type was used instead of conventional type.•The inverted type devices were determined to be more stable than conventional type cell.

Organic bulk heterojunction and inverted type solar cells were fabricated using AnE-PVstat:PCBM blends as photoactive layers. The device was inverted using thin films of TiO2 as hole blocking and electron conducting layers. The power conversion efficiency (PCE) of organic bulk heterojunction solar cells increased from 1.70% to 2.59% when inverted device configuration was used instead of regular organic bulk heterojunction solar cell configuration. Stability studies reveal that the inverted type devices are more stable than the herein investigated regular organic bulk heterojunction solar cells fabricated using AnE-PVstat:PCBM blends as photoactive layers.