Details

Autor(en) / Beteiligte

• Shin, Eun-Sol
• Oh, Jeong-Do
• Kim, Dae-Kyu
• Ha, Young-Geun
• Choi, Jong-Ho

Titel

Performance enhancement of pentacene and F16CuPc-based low-voltage devices using cross-linked blend gate dielectrics

Ist Teil von

• Journal of physics. D, Applied physics, 2015-04, Vol.48 (4)

Ort / Verlag

IOP Publishing

Erscheinungsjahr

2015

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Herein is reported the fabrication and systematic comparative analysis of low-voltage organic filed-effect transistors (OFETs) and inverters using bare ZrOx dielectrics and inorganic-organic hybrid CZB (cross-linked ZrOx/1,6-bis(trimethoxysily)hexane blend) dielectrics. Solution-processed sol-gel chemistry was employed to prepare the gate dielectrics. Two active layers of p-type pentacene and n-type copper hexadecafluorophthalocyanine (F16CuPc) were deposited on the dielectrics using the neutral cluster beam deposition method. Compared with bare ZrOx-based transistors and inverters, the CZB-based devices with low leakage current and high capacitance exhibited significantly higher hole and electron carrier mobilities of (0.12 → 1.03) and (1.3  ×  10−3 → 4.9  ×  10−3) cm2 (Vs)−1, respectively, and enhanced gains of (9.4 → 13.3), together with large output voltage swings and sharp inversions in the voltage transfer characteristics (VTCs). The CZB-based inverters also exhibited improved noise margins due to the higher gain and better symmetry of the VTCs compared with their bare ZrOx-based counterparts. The results indicate that on the basis of the enhanced electrical properties of CZB dielectrics and the growth of high-quality crystalline semiconducting films on CZB dielectric surfaces, such high-performance devices operating at low voltage levels are promising potential components for integrated circuits.