Evaluation of the characteristics of the organic thin film solar cell fabricated by poly4,8-bis(2-ethylhexyloxy)-benzo1,2-b:4,5-b'dithiophene-2,6-diyl-alt-(4-octanoyl-5-fluoro-thieno3,4-bthiophene-2-carboxylate)-2,6-diyl/6,6-phenyl-Csub71/sub-butyric acid methyl ester

摘要

Solar energy is the most abundant and reliable source of energy and we have to provide for the multi-terawattchallenge we are facing. In recent years organic photovoltaic's have become one of the most interesting research areasdue to their potential towards a cheap and broad applicability. We report the optical and electrical properties ofPBDTTT-CF: PCsub71/subBM bulk hetero-junction (BHJ) solar cell. The devices were prepared by spin coating techniquewith the device structure of Glass/ITO/PEDOT: PSS/Active layer/Al. The ratio of polymer donor and fullereneacceptor varied between 1:1 to 1:4. Optical absorption spectroscopy measurements of the films indicated absorptionpeaks in the range from 500-800 nm which were attributed to PBDTTT-CF. The surface morphology of the activelayers deposited was examined using Atomic Force Microscopy. The current density (J)-voltage (V) characteristics ofthe PBDTTT-CF: PCsub71/subBM bulk hetero-junction solar cells were studied. The devices fabricated using the selectiveactive layer show overall power conversion efficiency of 3%.© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.