The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 29, 2000
Filed:
Dec. 11, 1998
Applicant:
Inventors:
Nalin Kumar Patel, Cambridge, GB;
Mark Levence Leadbeater, Cambridge, GB;
Llewellyn John Cooper, Cambridge, GB;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
257 25 ; 257 14 ;
Abstract
A semiconductor device is presented which exhibits both interband and intraband tunnelling. The device comprises two active layers (21, 23) which are sandwiched between two barrier layers (3, 5). These layers are located between first and second terminals (7, 9). The active layers (21, 23) are chosen such that the conduction band edge (27) of the first active layer (21) having a lower energy than the valence band edge (25) of the second active layer (23);