Here, we show that the morphology of organic bulk-heterojuction (BJH) thin films strongly influences whether plasmonic modes supported by an electrode are absorbed or outcoupled (leaked) from the organic thin films. Using optical dark-field scattering, full-field electromagnetic modelling and grazing-incidence, wide-angle X-ray scattering, we find that more crystalline organic active layers, such as P3HT:PCBM trap surface plasmons while more amorphous organic thin films such as PTB7:PC70BM and PCDTBT:PC70BM facilitate leakage of surface plasmon polaritons. This is an important finding because it indicates that plasmonic light trapping can be improved in thin-film organic active layers using more crystalline active layers.
|Title of host publication
|2016 IEEE 43rd Photovoltaic Specialists Conference, PVSC 2016
|Institute of Electrical and Electronics Engineers Inc.
|Number of pages
|Published - Nov 18 2016
|43rd IEEE Photovoltaic Specialists Conference, PVSC 2016 - Portland, United States
Duration: Jun 5 2016 → Jun 10 2016
|Conference Record of the IEEE Photovoltaic Specialists Conference
|43rd IEEE Photovoltaic Specialists Conference, PVSC 2016
|6/5/16 → 6/10/16
ASJC Scopus subject areas
- Control and Systems Engineering
- Industrial and Manufacturing Engineering
- Electrical and Electronic Engineering