期刊
JAPANESE JOURNAL OF APPLIED PHYSICS
卷 55, 期 6, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.7567/JJAP.55.06GK04
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We demonstrate the fabrication of 7-octenytrichlorosilane (7-OTS)/trimethylaluminum (TMA) organic-inorganic hybrid films using molecularatomic layer deposition (MALD). The properties of 7-OTS/TMA hybrid films are extensively investigated using transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), atomic force microscopy (AFM), and electrical measurements. Our results suggest that uniform and smooth amorphous hybrid thin films with excellent insulating properties are obtained using the MALD process. Films have a relatively high dielectric constant of approximately 5.0 and low leakage current density. We fabricate zinc oxide (ZnO) based thin film transistors (TFTs) using 7-OTS/TMA hybrid material as a back gate dielectric with the top ZnO channel layer deposited in-situ via MALD. The ZnO TFTs exhibit a field effect mobility of approximately 0.43 cm(2)V(-1)s(-1), a threshold voltage of approximately 1 V, and an on/off ratio of approximately 10(3) under low voltage operation (from % 3 to 9 V). This work demonstrates an organic-inorganic hybrid gate dielectric material potentially useful in flexible electronics application. (C) 2016 The Japan Society of Applied Physics
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