| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1441006 | Synthetic Metals | 2014 | 5 Pages |
•Hole transport layer of the organic solar cells was prepared by the Au nanoparticles embedded with PEDOT:PSS.•The annealing effects of Au nanoparticles embedded PEDOT:PSS as hole transport layer of the organic solar cells were studied.•The surface morphology and electrical properties of the devices for the various annealing temperatures were characterized.
The annealing effects of Au nanoparticles embedded PEDOT:PSS as the hole transport layer (HTL) of organic solar cells (OSCs) were studied. The annealing temperature affected the surface morphology and electrical properties of the devices. The root-mean-square value of the un-annealed HTL was about 5.05 nm, and decreased to 2.14 nm after annealing at 150 °C, indicating improved surface roughness. Three step variations in the weight loss were observed, the annealing temperature increased. The highest Raman peaks were found at 1437 cm−1 wave number. A red shift of the Raman peak was observed, as the annealing temperature increased. With annealing temperatures increase from 110 to 150 °C, the open circuit voltage and short circuit current density of the OSCs decreased from 0.596 V and 8.1 mA/cm2 to 0.586 V and 7.3 mA/cm2, respectively. The highest power conversion efficiency of 2.8% was obtained for the HTL annealed at 110 °C.
