| Recombination is spin dependant |
| LED’s require injection of holes at one electrode and electrons at
the other. |
| If no spin
polarization |
| An eigenstate
requires: |
|
|
| Three states
with s = 1 (triplet) and one state with s = 0 (singlet) or,
in |
|
| the
absence of other effects, 75% triplet and 25% singlet recombination |
|