Boosting the Photovoltaic Performance of an Inverted P3HT:PCBM Based Bulk hetero-junction Organic Solar Cell

Abstract

In this thesis, the ef ect of active layer thickness, hole transport layer thickness and electron mobility for P3HT: PCBM based inverted organic solar cell has been investigated. Numerical simulation for the structure ITO/ZnO /P3HT: PCBM/MoO3/Ag has been done using General Purpose Photovoltaic Device Model (GPVDM) program tool. The short circuit current density (Jsc), open circuit voltage (Voc), fill factor ( FF) and power conversion ef iciency (PCE) of the cell demonstrated by varying the thickness of active layer from 140 nm to 240 nm ,hole transparent layer from 1 nm to 60 nm and electron mobility from 50 nm2v -1S -1 to 650 nm2 V -1S -1 . The performance improvement was observed at 220 nm and 20 nm active layer and hole transporting layer thickness respectively at 4.5x10 -7m2V-1S -1 electron mobility. The demonstration result shows the thickness of active layer, hole transport layer and charge carrier mobility plays important role for performance improvement of organic solar cells.