화학공학소재연구정보센터
Solid-State Electronics, Vol.130, 49-56, 2017
Performance improvement of IF(CN2)(2) meta based N-channel OTFTs and their integration into a stable CMOS inverter
In this work we report the fabrication of N channel transistors based on IF(CN2)(2) meta molecule. The effect of IF(CN2)(2) meta evaporation parameters on corresponding TFTs performances, is evaluated and highlighted here. Since the effect of deposition conditions for this molecule type has not been reported yet, here we report an improvement about 20 times of field effect mobility when deposited at substrate temperature of 80 degrees C and deposition rate of 0.7 angstrom/s, and then annealed at low temperature. Reached mobility of 2.2 x 10(-3) cm(2)/V.s, is comparable to reported mu(FE) of single crystal indenofluorene TFTs. The optimum mobility in these evaporation conditions was explained by the best compromise between the grain size and packing density of films. Fabricated IF(CN2)2 meta based devices are combined to 6,13-B is(triisopropylsilylethynyl)pentacene devices and then integrated into a CMOS inverter logic circuit. The inverter's VTC shows large output voltage swing. Electrical stability of the performed inverter was also evaluated and the inverter shows a correct electrical stability, after 3 h of non-stop operation and the peak to peak magnitude corresponding to V-OUT decreases only by 2.6%. (C) 2017 Elsevier Ltd. All rights reserved.