Title:
BLUE LIGHT-EMITTING DEVICE
Document Type and Number:
Japanese Patent JPH01319975
Kind Code:
A
Abstract:
PURPOSE:To improve the injection efficiency of electrons largely by the spreading of a contact area and electric-field concentration, and to obtain distinct blue emission having high brightness by forming the joint surface of a Schottky negative electrode and a diamond in an irregular shape having corner sections. CONSTITUTION:A Schottky negative electrode 2 is formed onto one side face of a diamond 1, and an ohmic positive electrode 3 is shaped onto an opposed side face. A large number of fine recessed sections 4 having a wedge-shaped sectional form are formed to the side face, on which the Schottky negative electrode 2 is shaped, in the diamond 1. The with (l) and depth (d) of the fine recessed section 4 are both approximately in several mum. An electrode material such as tungsten is attached onto one side face of the diamond 1, to which a large number of the fine recessed sections 4 are shaped, through a vacuum deposition method, etc. Accordingly, one side face of the thin-film material 1 of the diamond is coated with the electrode material such as tungsten, but the insides of the fine recessed sections 4 are also buried with the electrode at the same time.
Inventors:
HIRAKI AKIO
KAWARADA HIROSHI
USUDA SHOJI
YAMAMOTO KAZUKIYO
KAWARADA HIROSHI
USUDA SHOJI
YAMAMOTO KAZUKIYO
Application Number:
JP15257788A
Publication Date:
December 26, 1989
Filing Date:
June 21, 1988
Export Citation:
Assignee:
HIRAKI AKIO
KAWARADA HIROSHI
IDEC IZUMI CORP
KAWARADA HIROSHI
IDEC IZUMI CORP
International Classes:
H01L33/22; H01L33/28; H01L33/34; H01L33/38; H01L33/40; H05B33/12; H05B33/14; H05B33/26; (IPC1-7): H01L33/00
Attorney, Agent or Firm:
Hisao Komori