Table 4.

Bottom-gate top-contact (BGTC) copper phthalocyanine (CuPc) based OTFTs fabricated using poly(PFS-ran-MMA) copolymers as the dielectric layer.

FPFSa)	μ (cm2/Vs) b)	ION/OFF b)	VT (V) b)
0.08	1.23 ± 0.144 × 10−3	7.51 × 103	−16.35 ± 0.94
0.18	2.27 ± 0.473 × 10−3	1.83 × 104	−14.69 ± 1.22
0.32	2.41 ± 0.301 × 10−3	3.37 × 104	−6.35 ± 0.58
0.57	2.42 ± 0.423 × 10−3	1.07 × 104	−4.15 ± 1.18
0.81*	-	-	-
0.89*	-	-	-
1.00*	-	-	-

^a)F_PFS = molar composition of PFS in the poly(PFS-ran-MMA) copolymers dielectric layer. ^b) hole transport mobility (µ), the on-off current (I_ON/OFF) and the threshold voltage (V_T). *At these molar compositions, the CuPc no longer formed uniform films leading to device failure and irreproducible results.