Journal Article

PreJuSER-16665

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Nanoscale photoelectron ionisation detector based of lanthanum hexaboride

Zimmer, C. M. ; Schubert, J.FZJ* ; Hamann, S. ; Kunze, U. ; Doll, T.

2011
Wiley-VCH Weinheim

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Please use a persistent id in citations: doi:10.1002/pssa.201000966

Abstract: A nanoscale ioniser is presented exceeding the limitation of conventional photoionisation detectors. It employs accelerated photoelectrons that allow obtaining molecule specificity by the tuning of ionisation energies. The material lanthanum hexaboride (LaB6) is used as air stable photo cathode. Thin films of that material deposited by pulsed laser deposition (PLD) show quantum efficiency (QE) in the range of 10(-5) which is comparable to laser photo stimulation results. A careful treatment of the material yields reasonable low work functions even after surface reoxidation which opens up the possibility of using ultraviolet light emitting diodes (UV LEDs) in replacement of discharge lamps. (C) 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Keyword(s): J ; lanthanum hexaboride (LaB6) (auto) ; photoemission (auto) ; photo ionisation detector (auto) ; UV LED (auto)

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Halbleiter-Nanoelektronik (PGI-9)
2. Jülich-Aachen Research Alliance - Fundamentals of Future Information Technology (JARA-FIT)

Research Program(s):

1. Grundlagen für zukünftige Informationstechnologien (P42)

Appears in the scientific report 2011

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