Patent ID: 8981517
Filing Date: 2015-03-17
Classification: H01L

Abstract:
1. An imaging device, comprising: a semiconductor layer having a photodiode formed therein, photoelectric conversion being carried out in said photodiode; a first film, made of a material containing at least one element of silicon, hafnium, aluminum, tantalum, titanium, yttrium, and lanthanoid, and formed over said semiconductor layer in a region in which at least said photodiode is formed; and a second film, made of a material different from that of said first film, and formed on said first film, wherein said first film contains at least one of a hafnium oxide, a zircon oxide, an aluminum oxide, a titanium oxide, a tantalum oxide, a lanthanum oxide, a praseodymium oxide, a cerium oxide, a neodymium oxide, a promethium oxide, a samarium oxide, an europium oxide, a gadolinium oxide, a terbium oxide, a dysprosium oxide, a holmium oxide, an erbium oxide, a thulium oxide, an ytterbium oxide, a lutetium oxide, an yttrium oxide, a hafnium nitride, an aluminum nitride, a hafnium oxynitride, and an aluminum oxynitride.