Details

Autor(en) / Beteiligte

• Shijeesh, M. R.
• Mohan, Pillai Aswathy
• Jayaraj, M. K.

Titel

Complementary Inverter Circuits Based on p-Cu2O and n-ZTO Thin Film Transistors

Ist Teil von

• Journal of electronic materials, 2020, Vol.49 (1), p.537-543

Ort / Verlag

New York: Springer US

Erscheinungsjahr

2020

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• This paper describes the fabrication of copper oxide and zinc tin oxide complementary inverters where both the p -type and n -type channels were deposited by RF magnetron sputtering. We have designed low-voltage and high gain complementary inverters by combining a set of p channel copper oxide and n channel zinc tin oxide thin film transistors (TFTs) with different aspect ratios, thus reducing the difference in mobility and threshold voltage between both types of TFTs. The complementary inverters with four different geometric aspect ratios were fabricated using top-contact configuration. The voltage gain increase with aspect ratio and a maximum value of 4.2 was reached for an aspect ratio of 2 ( W p : W n  = 7200  μ m/3600  μ m). The voltage gain was found to be dependent on the SS value of p -type TFTs. It is also noticed that an inverter having a geometric aspect ratio of 2 gave better voltage gain and noise margin values. For a V DD  = 20 V the N MH and N ML values are 7 V and 6.5 V, respectively.