Table 1 A summary of electrical characteristics of IGZO EGTFTs under various aqueous dielectric conditions.

From: Sub-0.5 V Highly Stable Aqueous Salt Gated Metal Oxide Electronics

Semiconductor

Dielectric medium

Capacitance [μF/cm2]

μSat [cm2V−1s−1]

VTh [V]

gm,max [mS]

Ion/off, Max

IGZO

Water

14.63

10.15

0.15

0.519

4.5 × 106

KCl (0.1 M)

25.52

9.22

0.14

0.817

2.2 × 107

KCl (0.5 M)

27.87

8.74

0.15

0.844

1.2 × 107

KCl (1.0 M)

28.35

7.90

0.17

0.724

4.8 × 107

KCl (2.0 M)

30.12

10.82

0.16

1.086

1.4 × 107

IGZO

KCl (1.0 M)

28.35

7.90

0.17

0.724

4.8 × 107

NaCl (1.0 M)

28.46

8.15

0.19

0.705

8.9 × 107

KBr (1.0 M)

26.01

8.15

0.17

0.700

2.7 × 106

IGZO

PBS

30.12

10.21

0.18

0.968

2.1 × 107

  1. Field-effect mobilities were measured in a saturation regime [at VD = 0.5 V, W/L = 200 μm/ 20 μm]. All data were averaged over 10 devices.