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HL: Fachverband Halbleiterphysik
HL 26: Poster II
HL 26.14: Poster
Wednesday, March 11, 2026, 09:30–11:30, P1
Enhanced Field Emission Current Density in Chemically Engineered Multiwall Carbon Nanotube Neodymium Oxide Heterostructures — •Anima Mahajan1, Menaka Jha2, and Santanu Ghosh1 — 1Department of Physics, Indian Institute of Technology, Hauz Khas, New Delhi -110016, India. — 2Institute of Nano Science & Technology, Knowledge City, Sector-81, Mohali, Punjab- 160062, India.
The MWCNT, neodymium oxide (Nd*O*), and MWCNT-Nd*O* heterostructure were successfully fabricated through a facile three-step synthesis process: the synthesis of MWCNT rods by the chemical vapor deposition technique, the synthesis of the Nd*O* nanoparticles by using the micellar-assisted solid-state route, and the fabrication of the MWCNT-Nd*O* heterostructure. Moreover, the MWCNT-Nd*O* heterostructure exhibits enhanced field emission properties, with a lower turn-on field of 2.4 V/*m compared to pure MWCNT and Nd*O*, which have turn-on fields of 3.6 and 3.8 V/*m, respectively. The MWCNT*Nd*O* heterostructure exhibits an enhancement in current density of approximately 6365% compared to pure Nd*O* and around 172% relative to pristine MWCNT. The emission current stability at a preset value of 6 V/*m over an 8-hour duration is found to be fairly good, characterized by current fluctuations within * 3% of the average value. The enhanced field emission (FE) performance of the MWCNT-Nd*O* heterostructure is attributed to its high enhancement factor (β) of ~3.3*10*.
Keywords: 2D Material; 1D MWCNT; Nd2O3 electron field emission; MWCNT-Nd2O3 heterostructure; Field emission source