| dc.contributor.author | F Otieno, K Kamalakannan, M Airo, D Wamwangi | |
| dc.date.accessioned | 2022-01-23T07:56:11Z | |
| dc.date.available | 2022-01-23T07:56:11Z | |
| dc.date.issued | 2015 | |
| dc.identifier.uri | https://repository.maseno.ac.ke/handle/123456789/4552 | |
| dc.description.abstract | . In the present work we compare the performance of a pristine P3HT:PCBM
based bulk heterojunction solar cell with a device incorporated with pentacene encapsulated
Ag nanoparticles. Encapsulation has been achieved through thermal evaporation of a 22 nm
pentacene thin film. Introduction of pristine Ag nanoparticles revealed better overall
performance with a 22% increase in photo-conversion efficiency. This is attributed to the
localized surface Plasmon effect by Ag nano-islands. A study of device lifetime showed that
despite the efficiency enhancement, the device drastically degraded upon exposure to air.
Encapsulating Ag nanoparticles with pentacene increased light absorption and device stability
but traded off photo-conversion efficiency. This long lifetime could be as a result of silver
passivation by pentacene which minimizes oxidation of Silver nanoparticles and etching of
the ITO electrode by the acidic PEDOT:PSS. | en_US |
| dc.publisher | SA Institute of Physics | en_US |
| dc.title | Enhancing light absorption and lifetime stability of organic solar cells using pentacene encapsulation | en_US |
| dc.type | Article | en_US |
