Acta Phys. -Chim. Sin. ›› 2016, Vol. 32 ›› Issue (4): 1005-1011.doi: 10.3866/PKU.WHXB201601111

• ARTICLE • Previous Articles     Next Articles

NO2 Sensors Based on p-6P Heterogametic Induction Growth of Copper Phthalocyanine Thin Films

Zhan-Guo LI2,Yu-Ting ZHANG2,Qiang XIE1,Heng-Li LI1,Li-Jing SUN3,Xiao-Feng SONG1,Li-Juan WANG1,*()   

  1. 1 School of Chemical Engineering, Changchun University of Technology, Changchun 130012, P. R. China
    2 State Key Laboratory on High Power Semiconductor Lasers, Changchun University of Science and Technology, Changchun 130022, P. R. China
    3 School of Basic Sciences, Changchun University of Technology, Changchun 130012, P. R. China
  • Received:2015-10-06 Published:2016-04-07
  • Contact: Li-Juan WANG
  • Supported by:
    the National Natural Science Foundation of China(21403016);Key Program for Science and Technology Development of Jilin Province, China(20130102065JC, 20140520139JH);Scientific Research Foundation of Education Department of Jilin Province, China(2015103)


To realize low concentration NO2 detection at room temperature, copper phthalocyanine (CuPc) organic thin filmsensors are fabricated by using a para-hexaphenyl (p-6P) filmas the inducing layer. The growing characteristics of the p-6P film at different deposition rates are investigated by atomic force microscopy (AFM). At a low deposition rate, the p-6P film exhibited a horizontal growth mode. The large and thin domains were obtained owing to the sufficient diffusion time to the island. A CuPc thin film grown on p-6P film showed high order alignments, as observed by the AFM morphology. The CuPc films grew on the optimizing p-6P film by the weak epitaxial technique. The induction effect of the p-6P film to CuPc films was clearly observed by X-ray diffraction (XRD). By comparing the gas response effects of different deposition rates of the p-6P film, a high response intensity and recovery time were achieved at a low deposition rate. Thus, the performances of the CuPc film sensor were significantly improved by the inducing growth of p-6P thin films. The response intensity was twice that of CuPc thin films on silicon dioxide. The recovery time was 3.2 min and the detection concentration for NO2 gas was 1.0 × 10-5.

Key words: Para-hexaphenyl, Copper phthalocyanine, Thin film sensor, Heterogenetic induction