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以 8 -羟基喹啉铝和聚 (N -乙烯基 )咔唑为例 ,采用多种电化学方法确立了有机聚合物半导体材料的最高占有轨道和最低空轨道能级的位置 ,所得数据与光电子发射法表征结果一致 .用电化学方法测得的带隙Eelg 与吸收光谱法得到的 Eoptg 吻合 .用测得的能带结构参数为依据研制的电致发光器件的发光性能很高 .
Taking 8 - hydroxyquinoline aluminum and poly (N - vinyl) carbazole as examples, a variety of electrochemical methods were used to establish the positions of the highest occupied orbitals and the lowest vacant orbitals of the organic polymer semiconductors. The obtained data were compared with that of photoelectrons The results of Emission method showed that the bandgap Eelg obtained by electrochemical method was in good agreement with the Eoptg obtained by absorption spectroscopy.The electroluminescence device developed on the basis of the measured band structure parameters showed a high luminescence property.