Abstract
The pertinence of different layers of organic solar cells (OSCs), namely the active or dynamic layer, the hole transport layer (HTL), and the electron transport layer (ETL), as well as the presentation of OSC boundaries, was examined using electrical modelling through the OghmaNano software, previously known as GPVDM (General Purpose Photovoltaic Device Model) software. This study is essentially revolved around PTB7: PC70BM as the active layer. The device structure-FTO/ PEDOT:PSS /PTB7: PC70BM/ZnO/Al was employed. Here, ZnO and PEDOT: PSS were taken as ETL and HTL, separately. The thicknesses of the HTL, ETL, as well as the active layer, were adjusted, and the corresponding changes in the OSC parameters were observed. The outcomes showed that the highest power conversion efficiency (PCE) acquired was 12.55%, coupled with short circuit current density (15.69 mAcm-2), open-circuit voltage (1.030 V), and fill factor (77.6%). Further enhancements in the PCE and different boundaries of OSC can be achieved by changing the engineering of the device (OSC) and the materials.
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