Table 2 Steady-state OECT performance of polymers

From: The effect of residual palladium on the performance of organic electrochemical transistors

Polymer

Conc. of Pd [ppm]a

µOECT [cm2 V−1 s−1]b

C* [F cm−3]c

[μC*] [F V−1 cm−1 s−1]d

gm’ [S cm−1]e

p(g4T2-TT)

Unpurified

1769

3.13 ± 0.52

120 ± 9

374 ± 67

295 ± 57

F2

370

5.31 ± 2.65

246 ± 21

1308 ± 662

838 ± 438

F1

323

5.65 ± 0.19

123 ± 15

694 ± 87

494 ± 17

F3

157

6.53 ± 0.065

308 ± 20

2008 ± 130

1457 ± 6

F4

73

8.53 ± 0.40

114 ± 14

972 ± 127

626 ± 38

F3 + Pd2(dba)3

2157

3.02 ± 0.26

287 ± 18

860 ± 56

602 ± 21

Recombinedf

236

4.75 ± 1.12

123 ± 17

451 ± 124

231 ± 56

p(C6g3NDI-T)

Unpurified

1176

1.02 × 10−3 ± 3.79 × 10−4

222 ± 79

0.227 ± 0.117

0.055 ± 0.021

F4

540

2.26 × 10−3 ± 2.53 × 10−4

250 ± 78

0.563 ± 0.188

0.164 ± 0.018

F1

197

3.57 × 10−3 ± 2.94 × 10−4

129 ± 55

0.461 ± 0.202

0.127 ± 0.017

F3

112

6.06 × 10−4 ± 1.58 × 10−4

521 ± 160

0.316 ± 0.127

0.095 ± 0.024

F2

39

5.34 × 10−3 ± 3.40 × 10−4

306 ± 127

1.632 ± 0.688

0.155 ± 0.020

F2 + Pd2(dba)3

2039

1.10 × 10−3 ± 1.52 × 10−4

124 ± 26

0.136 ± 0.0341

0.029 ± 0.003

Recombinedf

198

1.96 × 10−3 ± 2.25 × 10−4

257 ± 101

0.503 ± 0.205

0.110 ± 0.012

  1. aCalculated from inductively coupled plasma mass spectrometry (ICP-MS, detailed in the SI).
  2. bOECT mobility calculated from the transistor saturation µC* product using the respective C* values.
  3. cC* values extracted from Randles circuit fits from electrochemical impedance curves of the polymers coated on Au electrodes in 0.1 M aqueous NaCl solution.
  4. d[μC*] calculated for the highest performing channel from the slope of gm with known channel dimensions and applied bias.
  5. ePeak OECT transconductance normalized by thickness.
  6. fFormed by combining a mass ratio of 1:1.32:0.16:1 of F1:F2:F3:F4 for p(g4T2-TT), which resulted in Mn = 90.6 kDa and a mass ratio of 1:1.4:1.4:1 of F1:F2:F3:F4 for p(C6g3NDI-T), which resulted in Mn = 61.2 kDa. All measurements are an average across 6 devices.
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