Zhi Qiang Liu

7455565, Nov 25, 2008

Mar 16, 2006

11/378133

Francisco Machuca - San Francisco CA, US
Zhi Liu - Palo Alto CA, US

The Board of Trustees of the Leland Stanford Junior University - Palo Alto CA

H01J 9/04
H01J 9/02

445 51, 445 35, 134 19

Improved photocathodes are provided by a fabrication method including steps of wet chemically cleaning the photocathode emission surface (to reduce the level of cleaning-induced surface damage), two stage heat treatment (to complete the cleaning without desorbing nitrogen from the emission surface), followed by activation with Cs only, as opposed to Cs—O. The resulting photocathodes have improved performance (lifetime, brightness, efficiency) compared to conventional photocathodes, and are thus attractive candidates for demanding photocathode applications.

20110308605, Dec 22, 2011

Jan 30, 2009

12/865390

Zhi Liu - Millbrae CA, US
Will Clay - Stanford CA, US
Michael A. Kelly - Portola Valley CA, US
Nicholas A. Melosh - Menlo Park CA, US
Andrey A. Fokin - Giessen, DE
Peter R. Schreiner - Wettenberg, DE

Justus-Liebig-Universitaet Giessen - Giessen
Leland J. Stanford Junior Univesity - Palo Alto CA

H01L 31/0216
C07C 13/615
H05B 33/14

136257, 313503, 585 22

Provided is a fluorescent diamondoid material which when energized, either by an electric field or by high energy radiation, emits light. The light emitted is generally in the visible range. The diamondoid material can be fine tuned by internal or external doping. The fluorescent materials comprised of diamondoids, have applications in several fields. One application is in solar cells where these materials can be used to improve the overall efficiency of the device. A second application is in indoor lighting where the materials can be used to efficiently produce white light. This can be done by either using the material as a fluorescent medium for a UV light source, in an electroluminescence device, or by using the material as part of an organic light emitting diode (OLED).

20220251708, Aug 11, 2022

Jan 24, 2022

17/582980

- Santa Clara CA, US
Zhi LIU - Stanford CA, US
Abhilash J. MAYUR - Salinas CA, US
Norman L. TAM - Cupertino CA, US

C23C 16/56
H01L 21/02
B08B 7/00
C23C 16/44

Apparatus, methods, and systems use hydrogen radicals during a thermal annealing of film stacks to reduce or remove contaminants (such as phosphorus) from the film stacks. In one implementation, a method of processing a film stack of a substrate, includes conducting a thermal anneal operation on the film stack while the substrate is directly supported on a pedestal heater. The thermal anneal operation includes reducing one or more of a stress or a bow of the film stack. The method includes conducting a radical treatment operation on the film stack after the thermal anneal operation is conducted. The radical treatment operation includes exposing the film stack to hydrogen radicals, and removing contaminant particles from the film stack.