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采用斯塔克（Ｓｔａｒｋ）光谱（电场调制反射光谱）技术研究了酞菁锡（ＳｎＰｃ）多晶薄膜中的激子跃迁和电荷转移。观察到一系列分子间电荷转移所形成的双分子激子谱带，显示了斯塔克光谱技术在探测淹没于弗伦克尔（Ｆｒｅｎｋｅｌ）激子带下面的微弱电荷转移跃迁方面具有独特的优点和很高的灵敏度。结合光电压作用谱的测量分析，认为弗伦克尔激子激发和电荷转移激子的形成、传输及解离在ＳｎＰｃ及同类材料的电导和光电导初级过程中发挥了重要作用
The exciton transition and charge transfer in polycrystalline thin films of tin phthalocyanine (SnPc) were investigated by Stark spectroscopy (electric field modulation reflectance spectroscopy). The observation of a series of bimolecular exciton bands formed by intermolecular charge transfer shows that Stark spectroscopy has unique advantages in detecting weak charge-transfer transitions submerged under the Frenkel exciton bands And very high sensitivity. Combined with the measurement of the photo-voltage spectrum, it is considered that the formation, transport and dissociation of exciton excitation and charge-transfer exciton play an important role in the conductance and photoconductive primary processes of SnPc and the like