Abstract
Water-based nanoparticulate (NP) and bulk heterojunction (BHJ) organic photovoltaic (OPV) devices based on blends of poly(9,9-dioctylfluorene-co-N,N- bis(4-butylphenyl)-N,Ndiphenyl-1,4-phenylenediamine) (PFB) and poly(9,9-dioctylfluorene-co-benzothiadiazole (F8BT) have been fabricated with aluminium and calcium/aluminium cathodes. The NP devices exhibit power conversion efficiencies (PCEs) that are double that of the corresponding BHJ device. Moreover, the addition of calcium into the cathode structure results in a dramatic increase in open circuit voltage and PCEs approaching 1 for water-based polyfluorene OPV devices.
| Original language | English |
|---|---|
| Article number | 053901 |
| Pages (from-to) | 053901 |
| Number of pages | 4 |
| Journal | Applied Physics Letters |
| Volume | 101 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 30 Jul 2012 |