Electric Properties of Organic-on-Inorganic n-Si/VOPc Heterojunction
In the current study vanadyl-phthalocyanine (VOPc) thin films were deposited by vacuum evaporation on n-Si substrate resulting in an organic-on-inorganic (n-Si/VOPc) heterojunctions. Ag films were deposited as electrodes. Thicknesses of the VOPc films were in the range of 100-300 nm. The dark I-V ch...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
al-Farabi Kazakh National University
2009-04-01
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| Series: | Eurasian Chemico-Technological Journal |
| Online Access: | http://ect-journal.kz/index.php/ectj/article/view/519 |
| Summary: | In the current study vanadyl-phthalocyanine (VOPc) thin films were deposited by vacuum evaporation on n-Si substrate resulting in an organic-on-inorganic (n-Si/VOPc) heterojunctions. Ag films were deposited as electrodes. Thicknesses of the VOPc films were in the range of 100-300 nm. The dark I-V characteristics exhibited rectification behavior. The rectification ratio (RR) decreased from 4 to 0.4 as the thickness of the VOPc film decreased. The dark I-V characteristics were simulated by modified Schokley equation and spaace-charge limited currents (SCLC) approach. Investigations were carried out to study the effect of VOPc films thickness on reverse saturation current , diode quality factor and mobility of charge carriers. |
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| ISSN: | 1562-3920 2522-4867 |