Preparation and characterization of organic solar cell.

Abstract

Organic molecules based photovoltaic cells were fabricated in an open laboratory conditions without the use of glove box or clean room. Conducting

polymers such as P3HT and PCBM were used as a photo-active layer of the

devices. We found significant difference in the performance of the devices

by employing two laboratory conditions of the polymer solutions. Enhanced

current density has been observed from P3HT/PCBM bulkheterojunction

solar cell after diluting a well sonicated polymers solution with fresh chloroform solvent. As the result of such current surge in the devices the efficiency

rose to more than double compared to those devices without dilution of the

P3HT/PCBM solution. An average power conversion efficiency of 4.5% was

then recorded from the new preparation condition. This is an encouraging

development toward achieving low cost organic photovoltaic devices.