High stable bifacial irradiated triple-mesoporous perovskite solar cells based on AgNWs@PEDOT composite electrodes

Abstract

Transparent conductive electrodes fabricated with random networks of silver nanowires (AgNWs) have been widely studied in recent years. However, the weak adhesion and chemical stability limit their further applications in perovskite solar cells. In this study, AgNWs@poly(3,4-ethylenedioxythiophene) (PEDOT)was first used as the transparent counter electrode to enhance the adhesion among AgNWs and avoid the contacts between the AgNWs and the perovskite crystals in the bifacial irradiated triple-mesoporous perovskite solar cells (PSCs). A series of XRD tests were took out and certified that the high stability of the composed films containing AgNWs@PEDOT and the perovskite crystals. A 40 days’ photocurrent-voltage test of the triple-mesoporous PSCs also proved the excellent stability and the champion power conversion efficiencies of 3.8% and 2.5% achieved from the front and the rear illumination respectively.