Patent ID: 8034649

Claim:
A method of manufacturing a solid state imaging device in which a light sensing section that performs photoelectric conversion of incident light is formed in a semiconductor substrate, comprising the steps of: forming an insulating layer on the semiconductor substrate formed with the light sensing section; and forming a layer having negative electric charges on the insulating layer so as to form a hole accumulation layer over the light sensing section, wherein forming of the layer having negative electric charges includes (a) forming a first layer on the insulating layer using one of an atomic layer deposition method and a metal organic chemical vapor deposition method, and (b) forming a second layer on the first layer using a physical vapor deposition method, the first and second layers formed of the same material, and wherein the layer having negative electric charges is formed of a material selected from the group consisting of hafnium oxide (HfO 2 ), aluminum oxide (Al 2 O 3 ), zirconium oxide (ZrO 2 ), tantalum oxide (Ta 2 O 5 ), titanium oxide (TiO 2 ), lanthanum oxide (La 2 O 3 ), praseodymium oxide (Pr 2 O 3 ), cerium oxide (CeO 2 ), neodymium oxide (Nd 2 O 3 ), promethium oxide (Pm 2 O 3 ), samarium oxide (Sm 2 O 3 ), europium oxide (Eu 2 O 3 ), gadolinium oxide (Gd 2 O 3 ), terbium oxide (Tb 2 O 3 ), dysprosium oxide (Dy 2 O 3 ), holmium oxide (Ho 2 O 3 ), erbium oxide (Er 2 O 3 ), thulium oxide (Tm 2 O 3 ), ytterbium oxide (Yb 2 O 3 ), lutetium oxide (Lu 2 O 3 ), yttrium oxide (Y 2 O 3 ), hafnium nitride, aluminum nitride, hafnium oxynitride, and aluminum oxynitride.