Resonance Photoconductivity in Fe-Doped InP
A photoconductivity peak at 0.44 eV is observed in Fe-doped InP. This peak is attributed to electrons which are optically excited from the Fe2+5E ground state to vibronic levels of the 5T2 excited state, and thermally excited from there to the conduction band. The lineshape is nearly Gaussian and is well fitted by assuming a vibronic coupling energy of about 0.06 eV in the 5T2 state. In analogy with results in the II–VI compounds this coupling may be dominated by interaction with non-symmetric lattice modes which produce a dynamic Jahn-Teller effect.
Look, D. C.
(1980). Resonance Photoconductivity in Fe-Doped InP. Solid State Communications, 33 (2), 237-240.