Solvent effects of a dimethyldicyanoquinonediimine buffer layer as N-type material on the performance of organic photovoltaic cells.
In the present work, we have fabricated organic photovoltaic cells consisting of ITO/PEDOT:PSS/P3HT:PCBM/DMDCNQI/Al using a dip-coating method with various solvent systems. We have investigated solvent effects (such as solubility, viscosity and vapor pressure) in deposition of a thin DMDCNQI buffer layer on the performance of organic photovoltaic cells. The solvent system which had low viscosity and good solubility properties, made a dense and uniform DMDCNQI ultra thin film, resulting in a high performance device. In particular, a prepared organic photovoltaic cell was fabricated using a cosolvent system (methanol:methylenechloride = 3:1) and showed a maximum power conversion efficiency of 4.53%.
Eui Yeol
EY
Yang
Se Young
SY
Oh
D002021:Buffers; D003486:Cyanides / Q000737:chemistry*; D009930:Organic Chemicals / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry*
D002021:Buffers; D003486:Cyanides; D009930:Organic Chemicals; D012997:Solvents