[OLED]?????, T-T annihilation, work function

1.Ohmic Contact
1.1 Ohmic Contact??
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An ohmic contact is a region on a semiconductor device that has been prepared so that the current-voltage (I-V) curve of the device is linear and symmetric. If the I-V characteristic is non-linear and asymmetric, the contact can instead be termed a blocking or Schottky contact. Typical ohmic contacts on semiconductors are sputtered or evaporated metal pads that are patterned using photolithography. Low-resistance, stable contacts are critical for the performance and reliability of integrated circuits and their preparation and characterization are major efforts in circuit fabrication.

1.2 Ohmic Contact? ??
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1.3 Ohmic Contact? ??

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