Organic-inorganic hybrid dielectrics with low leakage current for organic thin-film transistors

Sunho Jeong, Dongjo Kim, Sul Lee, Bong Kyun Park, Jooho Moon

Research output: Contribution to journalArticlepeer-review

64 Citations (Scopus)


Using a thermally cross-linkable organosiloxane-based organic-inorganic hybrid material, a solution-processable gate dielectric layer for organic thin-film transistors has been fabricated. The hybrid dielectric was synthesized by a sol-gel process, followed by heat treatment at below 190°C. Dielectric strength of 1.4-1.65 MV/cm was measured and it was confirmed that the leakage current is governed by the Poole-Frenkel emission mechanism in which the silanol groups act as trap sites. An organic thin-film transistor utilizing the hybrid dielectric shows similar electrical performance to a transistor fabricated using surface-modified thermally grown SiO2.

Original languageEnglish
Article number092101
JournalApplied Physics Letters
Issue number9
Publication statusPublished - 2006

Bibliographical note

Funding Information:
This work was supported by the National Research Laboratory (NRL) Program of the Korea Science and Engineering Foundation.

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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