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:
Apr. 30, 2002
Filed:
Sep. 17, 1997
Leigh Trevor Canham, Malvern, GB;
Timothy Ingram Cox, Malvern, GB;
Armando Loni, Malvern, GB;
Andrew John Simons, Malvern, GB;
Richard Simon Blacker, Malvern, GB;
Abstract
An electroluminescent device ( ) comprises a porous silicon region ( ) adjacent a bulk silicon region ( ), together with a top electrical contact ( ) of transparent indium tin oxide and a bottom electrical contact ( ) of aluminum. The device includes a heavily doped region ( ) to provide an ohmic contact. The porous silicon region ( ) is fabricated by anodizing through an ion-implanted surface layer of the bulk silicon. The silicon remains unannealed between the ion-implantation and anodization stages. The device ( ) has a rectifying p-n junction within the porous silicon region ( ).