Patent ID: 7341786
Filing Date: 2008-03-11
Classification: H01L,Y02E,Y02P

Abstract:
1. A semiconductor device comprising: an indium-containing wafer; device-forming layers deposited on said indium-containing wafer, said layers defining an episurface device-forming layer; and a dissolvable, mercury-adhering non-device forming layer composed of InGaAs(P) for dissolving in a nitric acid, sulfuric acid, or phosphoric acid+aqueous hydrogen peroxide removing solution, said mercury-adhering layer comprising at least two laminae each of composition having an As/(As+P) mole ratio different from that of the immediately adjacent other lamina, such that the difference between the As/(As+P) mole ratio of one lamina and the As/(As+P) mole ratio of the immediately adjacent other lamina is 0.1 or greater, and said mercury-adhering layer formed, as the outermost layer on the semiconductor device, on said episurface device-forming layer, for carrying a mercury electrode for profiling characteristics of the semiconductor device-forming layers.