Room-temperature giant current density discovered in Koops-GranMat

Author

Koops, Hans W. P. ; Fukuda, Hiroshi

Author_Institution

HaWilKo GmbH, Ober-Ramstadt, Germany

fYear

2014

fDate

6-10 July 2014

Firstpage

204

Lastpage

205

Abstract

Giant current density is observed in special nano-granular materials - called Koops-GranMat -, which are clusters of metal nanocrystals of 2-4 nm diameter embedded in a carbonaceous matrix. Variable range hopping characterizes the mechanism of conduction from 3D to BEC-material. Around the nanocrystals surface orbitals allow the generation of excitonic states, which overlap to similar states of neighboring crystals. Possibly an e-h condensate is formed which allows at room temperature current density > GA/cm² and field emitted currents > 1 mA ( Pt/C).

Keywords

current density; excitons; field emission; granular materials; hopping conduction; nanostructured materials; platinum; Koops-GranMat; Pt; condensate; conduction mechanism; excitonic states; field emission characteristics; field emitted currents>; giant current density; metal nanocrystal clusters; nanocrystal surface orbitals; nanogranular materials; temperature 293 K to 298 K; variable range hopping properties; Atmospheric measurements; Control systems; Integrated optics; Optical imaging; Optical surface waves; Particle measurements; Temperature measurement; Focused electron beam deposition; Giant current density; Nanogranular materials; e-h-condensate at room temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Nanoelectronics Conference (IVNC), 2014 27th International

Conference_Location

Engelberg

Print_ISBN

978-1-4799-5306-6

Type

conf

DOI

10.1109/IVNC.2014.6894810

Filename

6894810