Abstract
In this work, we explore the addition of reduced graphene oxide (RGO) decorated with copper ([email protected]) as hole transport layer (HTL) into carbon/CH3NH3PbI3/TiO2/FTO perovskite solar cell (PSC). Numerous instrumentations characterized the fabricated composites. The deposited Cu on RGO showed spherical metallic particles with diameters of 22–30 nm. Current density–voltage curves and Incident photon-to-electron conversion explore the impact of [email protected] on the photoconversion efficiency (PCE). The fashioned [email protected] nanocomposite showed improved PCE at 13.55% compared to 11.3 and 5.5% for the PSCs with [email protected] and pure RGO as HTL, respectively. These impacts are due to the significant hole extraction that proved by the photoluminescence quenching. Moreover, the produced devices with [email protected] displayed shelf stability at 88.8% of its initial PCE after two months. This work marks an important milestone towards the development of solar cells with reliable and high-performance perovskites.
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