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A monolithic nanodiamond lateral field emission triode
Author(s) -
Subramanian K.,
Kang W. P.,
Davidson J. L.
Publication year - 2009
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200982219
Subject(s) - triode , field electron emission , common emitter , materials science , nanodiamond , anode , optoelectronics , current density , quantum tunnelling , voltage , current (fluid) , cathode , electrode , electron , nanotechnology , capacitor , electrical engineering , chemistry , physics , diamond , quantum mechanics , composite material , engineering
A laterally configured field emission device comprised of nanodiamond has shown low turn‐on and operating voltages, and enhanced performance, owing to lithographic control over the device parameters, viz ., interelectrode spacing, emitter geometry, and large‐area array structure. This work deals with the development of a monolithic nanodiamond lateral vacuum triode . Gate‐controlled current modulation behavior is clearly observed. The low applied electric fields required to initiate and modulate the electron emission between the electrodes are attributed to the geometry and material composition of the nanodiamond lateral emitter. Other measured parameters include 1.1 µA (anode current density ∼1 A/cm 2 ) per finger; DC gain/amplification factor: 200; output impedance: ∼10 GΩ. The g m was found to increase exponentially with V g , suggesting that the electron current is well modulated by the gate voltage. The device characteristics were consistent with Fowler–Nordheim emission, the extracted anode current arising from field emission tunneling mechanism.