Electrostatic chuck and method of manufacturing the same

摘要

Disclosed is an electrostatic chuck having a coating layer (3) surrounding an insulating layer (1,2) and the eletrodes (3) consists essentially of non-crystalline carbon (DLC) having electric resistivity ranging from 10 sup 8 to 10 sup 13 Omega-cm. The coating layer preferably contains 15-26 atom % of hydrogen. The coating layer preferably has an intensity ratio of 07-1.2, the intensity ratio being defined as a ratio of an intensity at 1360 cm<-1 >to another intensity at 1500 cm<-1 >when the said coating layer is subjected to Raman spectroscopic analysis. The coating layer is manufactured by the P-CVD process wherein hydrocarbon (CxHy) is introduced into a vacuum container and ionized therein by ionizing process and ionized hydrocarbon is deposited on the surface of the said conductive electrodes by apply thereto a predetermined pulse voltage within an after-glow time of smaller than 250 microseconds.