TY - CPAPER
KW - Electron emission
KW - Computer software
KW - Electric variables measurement
KW - Semiconductor diodes
KW - Electron energy levels
KW - Current voltage characteristics
KW - Gates (transistor)
KW - Ammeters
KW - Anodes
KW - Data acquisition
KW - Graphic methods
KW - Interfaces (computer)
KW - Voltage control
KW - Energy analyzer
KW - Field emission energy distribution
KW - Gate anode
KW - Picoammeter
KW - Single tip gated diode
AU - John Bernhard
AU - Ambrosio Rouse
AU - Edward Sosa
AU - Bruce Gnade
AU - David Golden
AU - Babu Chalamala
AU - Sanjeev Aggarwal
AU - Ramamoorthy Ramesh
AB - Field emission current-voltage characteristics and simultaneous field emission electron energy distributions have been measured using single tip gate diodes. An energy distribution is generated at each step of a current-voltage characteristic using a compact low-cost simulated hemispherical energy analyzer. A PC programmed with graphics-based data acquisition software is used for data acquisition and control. The PC is connected to a CAMAC crate and a picoammeter through a GPIB interface. The picoammeter measures the current leaving the tip and the field emission electrons are energy analyzed, detected and processed in the CAMAC crate. The CAMAC crate also sends control voltages to the gate anode and the energy analyzer. This apparatus was used to measure tip work functions and Fowler-Nordheim tip shape parameters for Mo and IrO2 field emission tips. Work function measurements from field emission tips are compared to photoelectric work function measurements from flat surfaces.
BT - Proceedings of the Materials Research Society Symposium -
LA - eng
N1 - cited By 1
N2 - Field emission current-voltage characteristics and simultaneous field emission electron energy distributions have been measured using single tip gate diodes. An energy distribution is generated at each step of a current-voltage characteristic using a compact low-cost simulated hemispherical energy analyzer. A PC programmed with graphics-based data acquisition software is used for data acquisition and control. The PC is connected to a CAMAC crate and a picoammeter through a GPIB interface. The picoammeter measures the current leaving the tip and the field emission electrons are energy analyzed, detected and processed in the CAMAC crate. The CAMAC crate also sends control voltages to the gate anode and the energy analyzer. This apparatus was used to measure tip work functions and Fowler-Nordheim tip shape parameters for Mo and IrO2 field emission tips. Work function measurements from field emission tips are compared to photoelectric work function measurements from flat surfaces.
PB - Materials Research Society, Warrendale, PA, United States
PY - 2000
SP - 85
EP - 90
T2 - Proceedings of the Materials Research Society Symposium -
T3 - Materials Research Society Symposium -
TI - Field emission energy distribution and current-voltage characteristics using single tip gated diodes
VL - 558
SN - 02729172
ER -