Organic-inorganic hybrid layer, organic-inorganic laminate comprising same layer, and organic electronic element comprising same laminate as gas barrier

An organic optical device comprising:

• a substrate;
• an organic device layer on the substrate;
• and
• a gas barrier blocking external moisture or oxygen from penetrating into the organic device layer,
• wherein the gas barrier includes
• at least two metal oxide layers;
• and
• an organic-inorganic hybrid layer disposed between the metal oxide layers and including at least one unit layer including an organic molecular layer and a first metal atomic layer and, wherein the organic molecular layer includes a plurality of organic molecules represented by Formula 1 or 2 below:
• In Formula 1 or Formula 2, a plurality of — means a bond, and
• Xa and Xb2 are oxygen, Xc and Xd are sulfur, Xb1 is hydrogen, and
• Ra, Rb, Rc, and Rd are, irrespective of each other, a bond or a C1 to C3 alkylene group, the total number of carbons constituting Ra, Rb, Rc, and Rd is 1 to 9,
• Xa and Xb2 binds to a metal in the first metal atomic layer, and Xc and Xd binds to a metal in a second metal atomic layer or the metal oxide layer on the organic molecular layer, and
• the first metal atomic layer and the second metal atomic layer are zinc (Zn), tin (Sn), indium (In), cadmium (Cd), aluminum (Al), titanium (Ti), manganese (Mn), iron (Fe), cobalt (Co), copper (Cu), tungsten (W), or silicon (Si) layer.