Patent ID: 8471359

Claim:
A semiconductor device, comprising: a substrate; a bottom electrode on the substrate; a first dielectric layer on the bottom electrode, the first dielectric layer including a first metal oxide including at least one of Hf, Al, Zr, La, Ba, Sr, Ti, and Pb; a second dielectric layer on the first dielectric layer, the second dielectric layer including a second metal oxide including at least one of Hf, Al, Zr, La, Ba, Sr, Ti, and Pb, wherein the first metal oxide and the second metal oxide are different materials; a third dielectric layer disposed on the second dielectric layer, the third dielectric layer including a metal carbon oxynitride; and an upper electrode disposed on the third dielectric layer, wherein: a thickness of the first dielectric layer is greater than a thickness of the third dielectric layer, and the metal carbon oxynitride is represented by Chemical Formula 1: M (1-x-y-z) O x N y C z (1) in Chemical Formula 1, M includes at least one of Hf, Al, Zr, La, Ba, Sr, Ti, and Pb, x is about 0.4 to about 0.8, and y and z are each about 0.05 or less.