Ambient Atmosphere Dependent Photovoltaic Parameters of P3HT:ZnO Based Hybrid Solar Cells
The photo physical parameters of bulk heterojunction photovoltaic devices under the ambient atmosphere conditions have been studied. The devices have an interpenetrating donor–acceptor (D/A) network of conjugated polymer poly(3-hexylthiophene) (P3HT) and chemically synthesized zinc oxide (ZnO) nanoparticles. Current–voltage characteristics of device illustrate that open circuit voltage (V oc) improved due to the removal of oxygen vacancies present in ZnO nanoparticles and further saturate at a fixed value. The defect formation in active layer is confirmed by an increase in diode ideality factor. These defects are the main centers for the gradual decrease in short circuit current density (J sc) and fill factor with passage of aging time.
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Document Type: Research Article
Publication date: September 1, 2013
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