Phthalocyanine compounds(MPcL) containing the bridge radical ligand we
re studied by using the method of EHMOACC. Calculation results indicat
e that the charge carriers are mainly from thermal excitation of semic
onductor, where charges are transferred by both hole and electron; the
information manifested in the electron energy band and electric condu
ctivity deduced by means of migration formula of the charge carrier at
room temperature are in accordance with the experiment facts in the m
ain.