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Effect of Dodecane on the Surface Structure and the Electronic Properties of Pentacene on Modified Si (001)
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 Title & Authors
Effect of Dodecane on the Surface Structure and the Electronic Properties of Pentacene on Modified Si (001)
Kim, Beom-sik; Kang, Hee Jae; Seo, Soonjoo; Park, Nam Seok;
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The structural and the electronic properties of pentacene on modified Si (001) were investigated using scanning tunneling microscopy (STM), atomic force microscopy (AFM) and ultraviolet photoelectron spectroscopy (UPS). Dodecane was used to modify Si (001) substrates and then pentacene was deposited on dodecane/Si (001). Our STM results show a uniform distribution of aggregated dodecane molecules all over the clean Si (001). The surface structure of pentacene on dodecaene/Si (001) examined by AFM is analogous to that of pentacene on . The UPS data showed that the work function of pentacene on clean Si (001) and pentacene on modified Si (001) with dodecane was 6.41 and 5.57 eV, respectively. Our results prove that dodecane results in the work function difference between pentacene on clean Si (001) and pentacene on dodecane/Si (001).
Organic semiconductor;Organic-inorganic interface;Organic thin films;
 Cited by
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