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Electronic structure and chemical reaction of Ca deposition on regioregular poly(3-hexylthiophene) surfaces

  • Brief Communication/Physical Chemistry
  • Published:
Chinese Science Bulletin

Abstract

Conjugated polymer, regioregular poly(3-hexylthiophene) (rr-P3HT), films were prepared by spin-coating the rr-P3HT chloroform solution onto clean silicon wafer surfaces. The chemical reaction and electronic structure of Ca deposition on rr-P3HT surfaces were in situ investigated by synchrotron radiation photoemission spectroscopy (SRPES) and X-ray photoemission spectroscopy (XPS). Upon Ca deposition, Ca-induced band bending of rr-P3HT is observed. In addition, Ca atoms preferentially react with S atoms of rr-P3HT. No obvious reaction between Ca and C atoms can be found. Through the investigation of the evolution of valence band spectra and secondary electron cut-off of rr-P3HT during the process of Ca deposition, an energy level alignment diagram at the Ca/rr-P3HT interface is derived.

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Authors and Affiliations

  1. National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, 230029, China

    Wei Zhao, YuXian Guo, XueFei Feng, Liang Zhang, WenHua Zhang & JunFa Zhu

Authors
  1. Wei Zhao
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  2. YuXian Guo
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  3. XueFei Feng
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  4. Liang Zhang
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  5. WenHua Zhang
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  6. JunFa Zhu
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Corresponding author

Correspondence to JunFa Zhu.

Additional information

Supported by the National Natural Science Foundation of China (Grant No. 20773111), Scientific Research Foundation for Returned Scholars, Ministry of Education of China, Program for New Century Excellent Talents in University (NCET) and Start-up Funding of the University of Science and Technology of China

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Zhao, W., Guo, Y., Feng, X. et al. Electronic structure and chemical reaction of Ca deposition on regioregular poly(3-hexylthiophene) surfaces. Chin. Sci. Bull. 54, 1978–1982 (2009). https://doi.org/10.1007/s11434-009-0184-5

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  • DOI: https://doi.org/10.1007/s11434-009-0184-5

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