Electric field distribution in polymer light-emitting electrochemical cells
We use electroabsorption spectroscopy and modeling studies to probe the electric field in light-emitting electrochemical cells. At room temperature and constant applied bias, the steady-state internal field is zero for a range of biases. However, when the ions are frozen in place by cooling under steady bias, and the bias is subsequently changed, the profile of the electric potential resembles a typical p-n junction.
deMello
JC
Cavendish Laboratory, Madingley Road, Cambridge, CB3 OHE, United Kingdom.
Halls
JJ
Graham
SC
Tessler
N
Friend
RH