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Accession number;05A0303250
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| Title;Current-Voltage Characteristics of Pentacene Films: Effect of UV/Ozone Treatment on Au Electrodes |
| Author;
SUZUE Y
(Tokyo Inst. Of Technol., Tokyo, Jpn)
MANAKA T
(Tokyo Inst. Of Technol., Tokyo, Jpn)
IWAMOTO M
(Tokyo Inst. Of Technol., Tokyo, Jpn)
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Journal Title;Jpn J Appl Phys Part 1
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Journal Code:G0520B
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ISSN:0021-4922
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VOL.44;NO.1B;PAGE.561-565(2005)
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| Figure&Table&Reference;FIG.5, TBL.1, REF.13 |
| Pub. Country;Japan |
| Language;English |
| Abstract;In relation to a metal/organic interface, the effect of an ozone treatment on the electrical properties of a metal surface was investigated by surface potential and current-voltage (I-V) measurements. With a UV/ozone treatment on a gold (Au) surface, the surface potential formed across a vacuum-evaporated pentacene film (100 nm thickness) on a Au substrate varied from -200 mV to 350 mV. The variation in the surface potential is possibly a result of a change in the apparent work function of the Au surface. The results obtained by photoemission spectroscopy support the deepening of the Fermi level of the Au surface with the UV/ozone treatment. The I-V characteristics of a [Au (top)/pentacene/Au (bottom)] structure showed that the rectifying property reverses with the UV/ozone treatment of the bottom Au electrode. These results are discussed based on the potential barrier at the Au/pentacene interface due to the space charge. (author abst.) |
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