Self-Assembled, Nanowire Network Electrodes for Depleted Bulk Heterojunction Solar Cells

Herein, a solution‐processed, bottom‐up‐fabricated, nanowire network electrode is developed. This electrode features a ZnO template which is converted into locally connected, infiltratable, TiO2 nanowires. This new electrode is used to build a depleted bulk heterojunction solar cell employing hybrid‐passivated colloidal quantum dots. The new electrode allows the application of a thicker, and thus more light‐absorbing, colloidal quantum dot active layer, from which charge extraction of an efficiency comparable to that obtained from a thinner, planar device could be obtained.