Patent ID: 8796087
Filing Date: 2014-08-05
Classification: H01L

Abstract:
1. A method of fabricating a semiconductor device, the method comprising: providing a substrate; forming a bottom electrode on the substrate; forming a first dielectric layer on the bottom electrode such that the first dielectric layer includes a first metal oxide including at least one of Hf, Al, Zr, La, Ba, Sr, Ti, and Pb; forming a second dielectric layer on the first dielectric layer such that the second dielectric layer includes a second metal oxide including at least one of Hf, Al, Zr, La, Ba, Sr, Ti, and Pb and the first metal oxide and the second metal oxide include different materials; forming a third dielectric layer on the second dielectric layer such that the third dielectric layer includes a metal carbon oxynitride; and forming an upper electrode on the third dielectric layer, wherein the metal carbon oxynitride is represented by Chemical Formula 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.