Title :
Room-temperature giant current density discovered in Koops-GranMat
Author :
Koops, Hans W. P. ; Fukuda, Hiroshi
Author_Institution :
HaWilKo GmbH, Ober-Ramstadt, Germany
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;
Conference_Titel :
Vacuum Nanoelectronics Conference (IVNC), 2014 27th International
Conference_Location :
Engelberg
Print_ISBN :
978-1-4799-5306-6
DOI :
10.1109/IVNC.2014.6894810
