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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/22767

Title: Hierarchical hexagonal boron nitride nanowall-diamond nanorod heterostructures with enhanced optoelectronic performance
Authors: Kamatchi Jothiramalingam, Sankaran
Duc Quang Hoang
Korneychuk, Svetlana
Kunuku, Srinivasu
Thomas, Joseph Palathinkal
Pobedinskas, Paulius
Drijkoningen, Sien
Van Bael, Marlies K.
D'Haen, Jan
Verbeeck, Johan
Leou, Keh-Chyang
Leung, Kam Tong
Lin, I. -Nan
Haenen, Ken
Issue Date: 2016
Citation: RSC ADVANCES, 6(93), p. 90338-90346
Abstract: A superior field electron emission (FEE) source made from a hierarchical heterostructure, where two-dimensional hexagonal boron nitride (hBN) nanowalls were coated on one-dimensional diamond nanorods (DNRs), is fabricated using a simple and scalable method. FEE characteristics of hBN-DNR display a low turn-on field of 6.0 V mu m(-1), a high field enhancement factor of 5870 and a high life-time stability of 435 min. Such an enhancement in the FEE properties of hBN-DNR derives from the distinctive material combination, i.e., high aspect ratio of the heterostructure, good electron transport from the DNR to the hBN nanowalls and efficient field emission of electrons from the hBN nanowalls. The prospective application of these heterostructures is further evidenced by enhanced microplasma devices using hBN-DNR as a cathode, in which the threshold voltage was lowered to 350 V, affirming the role of hBN-DNR in the improvement of electron emission.
Notes: [Sankaran, Kamatchi Jothiramalingam; Duc Quang Hoang; Pobedinskas, Paulius; Drijkoningen, Sien; Van Bael, Marlies K.; D'Haen, Jan; Haenen, Ken] Hasselt Univ, Inst Mat Res IMO, B-3590 Diepenbeek, Belgium. [Sankaran, Kamatchi Jothiramalingam; Duc Quang Hoang; Pobedinskas, Paulius; Drijkoningen, Sien; Van Bael, Marlies K.; D'Haen, Jan; Haenen, Ken] IMEC VZW, IMOMEC, B-3590 Diepenbeek, Belgium. [Korneychuk, Svetlana; Thomas, Joseph Palathinkal; Verbeeck, Johan] Univ Antwerp, Electron Microscopy Mat Sci EMAT, B-2020 Antwerp, Belgium. [Leou, Keh-Chyang] Natl Tsing Hua Univ, Dept Engn & Syst Sci, Hsinchu 30013, Taiwan. [Leung, Kam Tong] Univ Waterloo, WATLab, Waterloo, ON N2L 3G1, Canada. [Leung, Kam Tong] Univ Waterloo, Dept Chem, Waterloo, ON N2L 3G1, Canada. [Lin, I. -Nan] Tamkang Univ, Dept Phys, Tamsui 251, Taiwan.
URI: http://hdl.handle.net/1942/22767
DOI: 10.1039/c6ra19596b
ISI #: 000385451800044
ISSN: 2046-2069
Category: A1
Type: Journal Contribution
Validation: ecoom, 2017
Appears in Collections: Research publications

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