摘要:
A capacitor having a high quality and a manufacturing method of the same are provided. A capacitor (10) has a lower electrode (13a) formed on an oxide film (12), a dielectric layer (14) formed on the lower electrode (13a), an upper electrode (15a,15c) formed so as to face the lower electrode (13a) with the dielectric layer (14) between, and an upper electrode (15b,15d) formed so as to cover the upper electrode (15c), an opening portion (62g) of the upper electrode (15c) and an opening portion (61g) of the dielectric layer (14). By forming the upper electrode (15a,15c) on the dielectric layer (14), it is possible to pattern the dielectric layer (14) by using the upper electrode (15a,15c) as a mask, and provide a capacitor (10) having a high-quality dielectric layer (14) by preventing impurity diffusion into the dielectric layer (14). By forming the upper electrode (15b,15d) on the dielectric layer (14), it is possible to prevent the dielectric layer (14) from being exposed to etching liquid, liquid developer, etc.
摘要:
Atmosphere in processing apparatus (100) is adjusted to, for example, oxygen atmosphere, by gas supply source (112) and the like. Interior of thermal processing apparatus (101) is set to oxygen atmosphere and raised to predetermined temperature. A wafer boat (161) containing wafer W having dielectric precursor layer formed is loaded into thermal processing apparatus (101) at speed at which no defects are produced in wafer W. Thereafter, reaction tube of thermal processing apparatus (101) has its internal temperature raised to baking temperature, to perform baking for predetermined time. The wafer W is cooled to predetermined temperature in thermal processing apparatus (101) and then to room temperature in processing apparatus (100), and carried out from processing apparatus (100). Before dielectric precursor layer is baked, it is maintained for predetermined time at temperature higher than temperature at which solvent in dielectric precursor layer is volatilized and lower than temperature at which dielectric precursor layer starts crystallization to vaporize residual solvent.
摘要:
A capacitor having a high quality and a manufacturing method of the same are provided. A capacitor (10) has a lower electrode (13a) formed on an oxide film (12), a dielectric layer (14) formed on the lower electrode (13a), an upper electrode (15a,15c) formed so as to face the lower electrode (13a) with the dielectric layer (14) between, and an upper electrode (15b,15d) formed so as to cover the upper electrode (15c), an opening portion (62g) of the upper electrode (15c) and an opening portion (61g) of the dielectric layer (14). By forming the upper electrode (15a,15c) on the dielectric layer (14), it is possible to pattern the dielectric layer (14) by using the upper electrode (15a,15c) as a mask, and provide a capacitor (10) having a high-quality dielectric layer (14) by preventing impurity diffusion into the dielectric layer (14). By forming the upper electrode (15b,15d) on the dielectric layer (14), it is possible to prevent the dielectric layer (14) from being exposed to etching liquid, liquid developer, etc.
摘要:
A dielectric film capacitor (20) includes a lower electrode (22) having an opening and formed of a material including platinum, a dielectric film (24) provided over the lower electrode and including an oxide having an ABOx crystal structure, and an upper electrode (26) provided over the dielectric film. The planar area of the lower electrode is 50% or more of the area of a formation region of the dielectric film. A dielectric film capacitor includes a lower electrode (22) formed of a material including platinum and having a thickness of 10 to 100 nm, a dielectric film (24) provided over the lower electrode and including an oxide having an ABOx crystal structure, and an upper electrode (26) provided over the dielectric film.
摘要:
Atmosphere in processing apparatus (100) is adjusted to, for example, oxygen atmosphere, by gas supply source (112) and the like. Interior of thermal processing apparatus (101) is set to oxygen atmosphere and raised to predetermined temperature. A wafer boat (161) containing wafer W having dielectric precursor layer formed is loaded into thermal processing apparatus (101) at speed at which no defects are produced in wafer W. Thereafter, reaction tube of thermal processing apparatus (101) has its internal temperature raised to baking temperature, to perform baking for predetermined time. The wafer W is cooled to predetermined temperature in thermal processing apparatus (101) and then to room temperature in processing apparatus (100), and carried out from processing apparatus (100). Before dielectric precursor layer is baked, it is maintained for predetermined time at temperature higher than temperature at which solvent in dielectric precursor layer is volatilized and lower than temperature at which dielectric precursor layer starts crystallization to vaporize residual solvent.