Low-workfunction photocathodes based on acetylide compounds
US8729799B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 2012 |
| Grant date | May 20, 2014 |
| Priority date | — |
| Expiry date | Nov 29, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J40/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A low-workfunction photocathode includes a photoemissive material employed as a coating on the photocathode. The photoemissive material includes AnMC2, where A is a first metal element, the first element is an alkali metal, an alkali-earth element or the element Al; n is an integer that is 0, 1, 2, 3 or 4; M is a second metal element, the second metal element is a transition metal or a metal stand-in; and C2 is the acetylide ion C22−. The photoemissive material includes a crystalline structure or non-crystalline structure of rod-like or curvy 1-dimensional polymeric substructures with MC2 repeating units embedded in a matrix of A.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.