Electron Transport in Bathocuproine Interlayer in Organic Semiconductor Devices

ヨシダ, ヒロユキ

吉田, 弘幸

When a thin layer of bathocuproine (BCP) is inserted between the metal electrode and organic layer of organic semiconductor device, the electron injection/collection efficiency at the interface is significantly improved. However, the mechanism of electron transport through the BCP layer has not been clarified yet. In this study, we directly observed the unoccupied electronic states of the Ag/BCP interface using low-energy inverse photoemission spectroscopy. The result shows that Ag strongly interacts with the BCP molecule and the lowest unoccupied molecular orbital (LUMO) level of the Ag-BCP complex aligns with the Fermi level indicating that the electron transport occurs through the LUMO level of the complex. With the aid of DFT calculation, we identify the reaction product.

https://opac.ll.chiba-u.jp/da/curator/100084/

https://opac.ll.chiba-u.jp/da/curator/100084/ElectronTransportinBathocuproine.pdf

American Chemical Society

Journal Article

19327455

AA12192210

The Journal of Physical Chemistry C

119

43

24459

24464

2015-10-01

https://doi.org/10.1021/acs.jpcc.5b07548

eng

http://pubs.acs.org/doi/full/10.1021/acs.jpcc.5b07548

author

12 months embargo - 本文公開日:2016-10-01