Title :
Photo-enhanced field emission studies of tapered CdS nanobelts
Author :
Chavan, P.G. ; More, M.A. ; Joag, D.S. ; Badadhe, Satish S. ; Mulla, I.S.
Author_Institution :
Dept. of Phys., Univ. of Pune, Pune, India
Abstract :
Field emission and photo-enhanced field emission characteristics of single crystalline tapered CdS nanobelts have been investigated. The turn-on field for the emission current density of ~ 0.1 μA/cm2 is found to be ~ 2.1 V/μm, which is much lower than reported values for various CdS nanostructures. The photo-enhanced field emission current shows a reproducible photo-switching behavior with rise in current level nearly four times that of its initial preset value (~ 1 μA) which is found to be very remarkable. Possible mechanism of photo-enhanced field emission is discussed.
Keywords :
II-VI semiconductors; cadmium compounds; current density; field emission; nanobelts; photochemistry; wide band gap semiconductors; CdS; current level; emission current density; photo-enhanced field emission current; photoswitching property; tapered nanobelts; turn-on field; Switches; Vacuum technology; Current stability; Field Emission; Nanobelts; Photo-switching;
Conference_Titel :
Vacuum Nanoelectronics Conference (IVNC), 2014 27th International
Conference_Location :
Engelberg
Print_ISBN :
978-1-4799-5306-6
DOI :
10.1109/IVNC.2014.6894770
