| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1553539 | Superlattices and Microstructures | 2014 | 8 Pages |
•TiO2/Ag/TiO2/Ag/TiO2 (TATAT) films have been designed and fabricated.•The optimum thicknesses of Ag and TiO2 layers for TATAT films were determined.•The optoelectrical properties of optimized TATAT films were investigated.•Inverted organic photovoltaic cells were fabricated and characterized.•TATAT films are promising electrode that can be used in organic solar cells.
In this study, transparent conductive TiO2/Ag/TiO2/Ag/TiO2 (TATAT) nano-multilayer system is designed and optimum thickness of TiO2 and Ag layers are calculated. TATAT nano-multilayer films were deposited on glass substrates at room temperature by a thermal evaporation technique. We investigated some electrical, optical and structural properties of optimized TATAT multilayer such as sheet resistance, optical transmittance and the root-mean-square surface roughness. Here, we suggest a very low resistance transparent electrode (2.3 (Ω/□)) with a high transmittance (90%) for optoelectronics applications. Inverted organic photovoltaic cell was fabricated on the TATAT cathode. The fabricated cell with 12 nm of Ag layer shows higher power conversion efficiency (2.68%) compared to that fabricated on the ITO electrode (1.84%). The results show that the TATAT multilayer system is a suitable structure for use as transparent conductive electrode in optoelectronic devices.
