Organic light emitting device and method of fabricating the same
An organic light emitting device and a method of fabricating the same includes a first substrate; a thin film transistor (TFT) on the first substrate; a planarization layer on the TFT; an organic light emitting diode (OLED) on the planarization layer; a passivation layer on the OLED; a second substrate on the passivation; and a hydrogen capturing material between the first and the second substrates to prevent oxidation of materials forming the TFT.
1. An organic light emitting device comprising:
a first substrate;
a thin film transistor (TFT) on the first substrate;
an insulating layer on the TFT;
an organic light emitting diode (OLED) on the insulating layer;
a passivation layer on the OLED;
an adhesive layer on the passivation layer;
a second substrate on the adhesive layer; and
a hydrogen capturing material between the first and the second substrates,
wherein the hydrogen capturing material dissociates hydrogen to prevent de-oxidation of materials forming the TFT, and
wherein the passivation layer, the adhesive layer and the second substrate include the hydrogen capturing material.
2. The organic light emitting device of claim 1 , wherein the first substrate includes the hydrogen capturing material.
3. The organic light emitting device of claim 1 , wherein the TFT includes an oxide layer selected from the group consisting of Indium Gallium Zinc Oxide (IGZO), Zinc Tin Oxide (ZTO), and Zinc Indium Oxide (ZIO).
4. The organic light emitting device of claim 1 , wherein the second substrate includes a metal foil or a metal foil alloy including the hydrogen capturing metal.
5. The organic light emitting device of claim 1 , wherein the second substrate includes a material selected from the group consisting of Li, Na, Cr, α-Fe, Mo, W, and K.
6. The organic light emitting device of claim 1 , wherein the second substrate includes a material selected from the group consisting of Pt, Pb, Ni, γ-Fe, Cu, Al, Au, and Ag.
7. The organic light emitting device of claim 1 , wherein the first substrate includes a metal foil or metal foil alloy including the hydrogen capturing metal.
8. The organic light emitting device of claim 1 , wherein the hydrogen capturing material is capable of dissociating a hydrogen molecule into hydrogen atoms.
9. The organic light emitting device of claim 1 , wherein the hydrogen capturing material is capable of dissociating a hydrogen molecule into hydrogen atoms to form an interstitial solid solution or metal hydride.
10. The organic light emitting device of claim 1 , wherein the hydrogen capturing material includes an element selected from the group consisting of Ba, Ca, Cu, Fe, Hf, La, Mg, Nb, Ni, Pd, Pt, Se, Sr, Ta, Ti, V, and Zr.
11. The organic light emitting device of claim 5 , wherein the metal foil or the metal foil alloy has a body centered cubic lattice structure having about 32% porosity.
12. The organic light emitting device of claim 11 , wherein the metal foil or metal foil alloy having the body centered lattice structure has a packing factor of about 68%.
13. The organic light emitting device of claim 6 , wherein the metal foil or the metal foil alloy has a face centered cubic lattice structure having about 26% porosity.
14. The organic light emitting device of claim 13 , wherein the metal foil or metal foil alloy having the face centered cubic lattice structure has a packing factor of about 74%.