TFT

Question 1

Diferenças entre MOSFET’s e TFT’s

Answer 1

Mosfet:
- Trabalha em INVERSÃO
-4 terminais
-Construido “dentro” do substrato

TFT:
-Trabalha em acumulação
-3 terminais
-Construido em “cima” do substrato

Question 1

Electrolyte Gate Transistors (EGTs)

Answer 1

Electrolytes are ionic conductors and electrical insulators

Question 2

Main features EGT’s

Answer 2

-Baixas tensões de operação
-Alta capacidade
-Eletrical double layer
-Fully printed
-Dois modos de operação

Question 3

Desvantagens EGT’s

Answer 3

-Altas correntes de fuga
-Switching delays
-Grandes capacidades parasitas

Question 4

MODOS EGT

Answer 4

-Field effect mode
-Eletromechanical mode

Question 5

Eletromechanical mode

Answer 5

• positive VG leads to oxidation of polypyrrole that turns it conductive
  Device operation was based on redox reaction