Electric Device, Information Terminal, Electric Refrigerator, Electric Vacuum Cleaner, Ultraviolet Sensor, and Field-Effect Transistor

An electric device comprising:

• image detecting portion (6, 66, 127, 149) for receiving ultraviolet radiation and detecting an image by received said ultraviolet radiation;
• and
• a display section (2, 32, 42, 52, 62, 82, 92, 102, 126, 147, 172) for displaying ultraviolet radiation information generated on the basis of said image by said ultraviolet radiation detected with said image detecting portion, wherein
• said image detecting portion includes a field-effect transistor having a semiconductor substrate, source and drain regions provided on said semiconductor substrate, a channel layer formed between said source and drain regions, a gate insulating film formed on said channel layer, and a gate electrode formed on said gate insulating film and formed with a light-receiving layer receiving said ultraviolet radiation to generate electrons and holes, a silicon oxide layer and an electrode layer in an order from a side closer to said gate insulating film.

A field-effect transistor comprising:

• a semiconductor substrate (301);
• a source region (305) and a drain region (306) provided on said semiconductor substrate;
• a channel layer (303a) formed between said source and drain regions;
• and
• a gate insulating film (308) formed on said channel layer and a gate electrode (312) formed on said gate insulating film, wherein
• said gate electrode includes a light-receiving layer (309) receiving ultraviolet radiation to generate electrons and holes, a silicon oxide layer (310) and an electrode layer (311) in an order from a side closer to said gate insulating film.