PEDOT: PSS/PC71BM with various Rubrene doping levels for the production of Organic/Inorganic hybrid silicon solar cells with enhanced yield efficiency

Abstract

Polymer-based solar cells (PSCs) have garnered considerable interest due to their potential advantages over traditional organic/inorganic hybrid silicon solar cells, including reduced material and production costs, compact substrates, and lightweight finished photovoltaic cells. To explore this further, we examined the impact of Rubrene in the PEDOT: PC71BM hole transport layer within the bulk Heterojunction framework of solution-processable polymer photovoltaic cells. Cells were created by combining PEDOT: PSS and PC71BM, incorporating Rubrene at 6, 9, 12, and 15 wt% ratios. The device structure comprised Si/PEDOT: PSS/PC71BM: Rubrene: DMSO/Ag, with Ag serving as a cathode fabricated in a low-pressure chamber. Notably, employing a 6 wt% Rubrene solution yielded improved short-circuit current density (Jsc), open-circuit voltage (Voc), fill factor (FF), and power conversion efficiency (PCE) of 13.97 mA.cm−2, 514.80 mV, 40.97, and 2.948 %, respectively. These results demonstrate enhanced PCE with the addition of Rubrene compared to prior studies utilizing an active Rubrene surface.