PHOTODIODE DEVICE

摘要

PURPOSE: A light detector element successively absorbs lights ranging from a light with small energy to a light with large energy, and thus improves optical absorption efficiency. CONSTITUTION: A photoelectric transformation layer (200) is interposed between a lower and upper part carrier transport layers. A common electrode (130) is arranged on the upper carrier transport layer. The photoelectric transformation layer comprises multiple light absorption layers. The light absorption layers contain silicon nanocrystals. The size of the silicon nanocrystals is different from each other.