01766nas a2200157   4500008004100000245009700041210006900138260000800207300001800215490000600233520117000239100002801409700002301437700002401460856012401484       2016                        eng d00aLaser exfoliation of 2D black phosphorus nanosheets and their application as a field emitter0 aLaser exfoliation of 2D black phosphorus nanosheets and their ap  cNOV  a112103-1121080 v63 aHighly crystalline two dimensional (2D) few layered black phosphorus (BP) nanosheets have been synthesized via a one step facile laser irradiation technique under optimized experimental conditions. The field emission investigations on the few layered black phosphorus nanosheets were carried out at the base pressure 1 x 10(-8) mbar. The morphological, elemental, optical, and structural analysis of the as-synthesized black phosphorus sample was carried out using SEM, AFM, EDAX, TEM, and Raman spectroscopy. The turn-on values of the BP nanosheets emitter were found to be significantly lower than that of earlier reports of BP nanosheets, graphene, and carbon nanotubes based field emitters due to the high field enhancement factor (beta) similar to 2986 associated with atomically thin/sharp edges of the BP nanosheets emitter. The emission current versus time plot depicts the good emission current stability with a pre-set value of 1 mu A for similar to 5 h duration. Our facile synthesis approach and the robust field emitter nature of the BP nanosheets makes them a potential candidate for a practical electron source in vacuum micro/nanoelectronic devices.1 aSuryawanshi, Sachin, R.1 aMore, Mahendra, A.1 aLate, Dattatray, J.  uhttps://library.ncl.res.in/content/laser-exfoliation-2d-black-phosphorus-nanosheets-and-their-application-field-emitter