Evidence of the improvement of photovoltaic efficiency by polar molecule orientation in a new semiconducting polymer |
| |
| Authors: | Carole Sentein, Licinio Rocha, Aleksandra Apostoluk, Paul Raimond, Iris Duyssens, Ineke Van Severen, Thomas Cleij, Laurence Lutsen, Dirk Vanderzande, Vaidotas Ka ukauskas, Mindaugas Pranaitis,Valius yras |
| |
| Affiliation: | aDEN-DMN-SRMA-LTMEX, CEA Saclay, F91191 Gif-sur-Yvette, France;bIMEC, IMOMEC Division, Wetenschapspark 1, B-3590 Diepenbeek, Belgium;cHasselt University, Agoralaan 1, Building D, SBG/OS Department, B-3590 Diepenbeek, Belgium;dSemiconductor Physics Department and Institute of Materials Science and Applied Research of Vilnius University, Saulėtekio al. 9, Bulding 3, LT-10222 Vilnius, Lithuania |
| |
| Abstract: | Storage of an internal field in a polymeric semiconductor device should be of great interest for applications like photovoltaic solar cells to facilitate exciton dissociation and improve charge transport in the structure. Orientation of polar molecules, contained inside a polymer binder, induces a rectifying effect, behaving as a distributed homojunction within a single polymeric film. To investigate this concept, a new poly(p-phenylenevinylene) (PPV) derivative bearing push–pull like molecules was purposefully designed and synthesized. Effect of polar molecules’ orientation on carrier injection and transport properties was studied. In the test systems, we demonstrate an increase of the external quantum efficiency upon orientation. |
| |
| Keywords: | Organic solar cells Polymer semiconductors Molecular chain orientation Carrier transport |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
