利用表面光电压谱研究了酞菁镍的光伏性质及其受吸附O_2和吡啶的影响.在真空条件下,除观察到酞菁镍在335、650和580 nm附近有3个强光伏响应带外,还首次利用这一技术发现了450 nm附近有一弱光伏响应带,并指认该带为由中心金属Ni~(2+)的dπ轨道向酞菁环上的e_n(π~n)轨道的MLCT跃迁.在氧的存在下,450nm响应带会消失甚至发生反转,而吡啶的吸附则使酞菁镍的所有光伏响应带消失,但未观察到反转现象. The photovoltaic properties of nickel phthalocyanine and its effect on the adsorption of O_2 and pyridine were investigated by surface photovoltage spectroscopy.Under vacuum condition, except for the observation that there are three strong photovoltaic response bands near 335, 650 and 580 nm, For the first time, this technique was also used to find a weak photoresponse band around 450 nm, which was identified as the MLCT transition from the dπ orbital of the center metal Ni 2+ to the e_n (π ~ n) orbit on the phthalocyanine ring In the presence of oxygen, the 450nm response band disappears or even reverses, whereas the adsorption of pyridine disappears all of the photonic bands of nickel phthalocyanine, but no inversion is observed.