TY - JOUR
T1 - Field emission property of multi-cathode electron sources with vertically aligned CNT arrays
AU - Yang, Hyeon Hee
AU - Lim, Joonwon
AU - Park, Kyu Chang
N1 - Publisher Copyright:
© 2021 The Japan Society of Applied Physics.
PY - 2021/10
Y1 - 2021/10
N2 - Carbon nanotube (CNT)-based cold cathode has been used as an efficient electron emitter owing to its high electrical conductivity and unique structural feature of high aspect ratio. However, conventional CNT-based cold cathode with diode electrode configuration restricts the applicable range of the CNT cold cathode. Here, we present the systematic investigation of electron beam property and I-V characteristic of various CNT-based multi-emitter system for advanced electron emitting devices capable of large areal applications. Single emitter island, consisting of well-defined N × N CNT strands, shows high maximum current value, low turn-on voltage and large electron beam diameter with increase of N value. For the multi-emitter system consisting multi-islands, a critical pitch size of multi-emitter system is found to obtain separated electron beam for each island without significant interference between electrons departing from each island.
AB - Carbon nanotube (CNT)-based cold cathode has been used as an efficient electron emitter owing to its high electrical conductivity and unique structural feature of high aspect ratio. However, conventional CNT-based cold cathode with diode electrode configuration restricts the applicable range of the CNT cold cathode. Here, we present the systematic investigation of electron beam property and I-V characteristic of various CNT-based multi-emitter system for advanced electron emitting devices capable of large areal applications. Single emitter island, consisting of well-defined N × N CNT strands, shows high maximum current value, low turn-on voltage and large electron beam diameter with increase of N value. For the multi-emitter system consisting multi-islands, a critical pitch size of multi-emitter system is found to obtain separated electron beam for each island without significant interference between electrons departing from each island.
UR - http://www.scopus.com/inward/record.url?scp=85117165523&partnerID=8YFLogxK
U2 - 10.35848/1347-4065/ac2396
DO - 10.35848/1347-4065/ac2396
M3 - Article
AN - SCOPUS:85117165523
SN - 0021-4922
VL - 60
JO - Japanese Journal of Applied Physics
JF - Japanese Journal of Applied Physics
IS - 10
M1 - 105002
ER -