Page 8 - Organic Electronics in Sensors and Biotechnology

Contents

Contributors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii

1 Scaling Effects in Organic Transistors and
Transistor-Based Chemical Sensors . . . . . . . . . . . . . 1
1.1 Scaling Behavior in Organic Transistors . . . . 1
1.1.1 Charge Transport in Polycrystalline
Organic Semiconductors (Intragrain
and Intergrain) . . . . . . . . . . . . . . . . . . . 1
1.1.2 Characterization of Nanoscale Organic
Transistors . . . . . . . . . . . . . . . . . . . . . . . 5
1.1.3 Channel Length and Temperature
Dependence of Charge Transport in
Organic Transistors . . . . . . . . . . . . . . . 7
1.1.4 Field-Dependent Mobility Model
for the Scaling Behavior of Charge
Transport . . . . . . . . . . . . . . . . . . . . . . . 14
1.1.5 Charge Transport in sub-10-nm
Organic Transistors . . . . . . . . . . . . . . . 21
1.2 Scaling Behavior of Chemical Sensing
with Organic Transistors . . . . . . . . . . . . . . . . . 25
1.2.1 General Introduction to Organic
Transistors for Sensing Applications . . . 25
1.2.2 Vapor Sensing in Micron-Sized
Organic Transistors and Trapping
at Grain Boundaries . . . . . . . . . . . . . . . 27
1.2.3 Transition of Sensing Response by
Organic Transistors from Micron-Scale
to Nanoscale . . . . . . . . . . . . . . . . . . . . . 29
1.2.4 Discussions on the Scaling Behavior
of Sensing Response: Role of Grain
Boundaries and Contact . . . . . . . . . . . 35
1.2.5 Sensor Response to Different Analytes
and the Function of Receptors . . . . . . 40

1.3 The Unified Picture of Scaling Behavior of
Charge Transport and Chemical Sensor . . . . 43
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

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