Switch-on voltage

Place the electrodes and press them gendy on the lEF electrode strips. Close the lid of the electrophoresis apparatus and switch on voltage. For 180 mm IPG strips the following conditions should be used (Table 2.11) ... 

Fig. 6.9. Statistical distribution of (a) mobility, (b) switch-on voltage, and (c) subthreshold swing of 49 pentacene TFTs on the same substrate.

A possible way to solve this technologically is by introducing a monolayer of molecular dipoles at the gate insulator—semiconductor interface, thereby giving the option to control the interface states and hence switch-on voltage. See for instance Kobayashi et al, Nature Materials,... 

The effect of photoinduced electron transfer can be applied in organic phototransistors, as we demonstrated recently [146]. Spiro-DPSP 115 is a hole-transport material with a low charge carrier concentration in the dark. Under illumination, electron-hole pairs are generated that increase the munber of positive charges in the film, contributing to the conductivity. As a result, the transfer characteristic curve shifts toward lower switch-on voltages. 

Fig. 47 Transfer characteristics of organic phototransistor with Spiro-DPSP as active material. Irradiation at 375 nm shifts switch-on voltage to positive values (after [146])...

Switching over voltages phenomena in MV bwiichgears. Workshop on MV Switchgear and CPRI. 1-43. (1987). 

Steady-state voltage regulation Acceptable transitent voltage variation Non-linearity characteristics of load current Percentage distortion in voltage Frequency tolerance Power factor of load Inmsh upon switch-on... 

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