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Transparent contacts for organic devices

  • US 20010000005A1
  • Filed: 12/01/2000
  • Published: 03/15/2001
  • Est. Priority Date: 12/13/1994
  • Status: Active Grant
First Claim
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1. A light emitting device including at least one organic light emitting device (OLED) that is substantially transparent (TOLED) when de-energized, comprising:

  • a substantially transparent substrate having top and bottom surfaces;

    a first substantially transparent thin film coating of indium tin oxide (ITO) applied to the top surface of said substrate;

    a substantially transparent coating of a hole conducting material applied over said ITO layer;

    a substantially transparent layer of an electron conducting and highly electroluminescent organic material overlaying said ITO layer;

    a relatively thin film of a substantially transparent metal electrode applied over said organic material layer;

    a second substantially transparent thin film coating of ITO overlying said metal electrode film; and

    first and second electrical contacts bonded to said first and second ITO layers for receiving a bias voltage to energize said device, and cause it to emit light of a given color from top and bottom surfaces thereof.

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