caa a22 4500 463213971 CHVBK 20180405153150.0 cr unu---uuuuu 170326e20070101xx s 000 0 eng 10.1007/s00339-006-3734-6 doi (NATIONALLICENCE)springer-10.1007/s00339-006-3734-6 Low-macroscopic field emission from nanocrystalline Al doped SnO2 thin films synthesized by sol-gel technique [Elektronische Daten] [Sk.F. Ahmed, P.K. Ghosh, S. Khan, M.K. Mitra, K.K. Chattopadhyay] We have observed low-macroscopic field electron emission from wide bandgap nanocrystalline Al doped SnO2 thin films deposited on glass substrates. The emission properties have been studied for different anode-sample spacings and for different Al concentrations in the films. The turn-on field and approximate work function were calculated and we have tried to explain the emission mechanism from this. The turn-on field was found to vary in the range 5.6-7.5V/μm for a variation of anode sample spacing from 80-120μm. The turn-on field was also found to vary from 4.6-5.68V/μm for a fixed anode-sample separation of 80μm with a variation of Al concentration in the films 8.16-2.31%. The Al concentrations in the films have been measured by energy dispersive X-ray analysis. Optical transmittance measurement of the films showed a high transparency with a direct bandgap ∼3.98eV. Due to the wide bandgap, the electron affinity of the film decreased. This, along with the nanocrystalline nature of the films, enhanced the field emission properties. Springer-Verlag, 2006 Ahmed Sk.F. Thin Film & Nanoscience Laboratory, Department of Physics, Jadavpur University, 700032, Kolkata, India aut Ghosh P.K. Thin Film & Nanoscience Laboratory, Department of Physics, Jadavpur University, 700032, Kolkata, India aut Khan S. Thin Film & Nanoscience Laboratory, Department of Physics, Jadavpur University, 700032, Kolkata, India aut Mitra M.K. Nanoscience and Technology Center, Jadavpur University, 700032, Kolkata, India aut Chattopadhyay K.K. Thin Film & Nanoscience Laboratory, Department of Physics, Jadavpur University, 700032, Kolkata, India aut Applied Physics A Springer-Verlag 86/1(2007-01-01), 139-143 0947-8396 86:1<139 2007 86 339 https://doi.org/10.1007/s00339-006-3734-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00339-006-3734-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ahmed Sk.F. Thin Film & Nanoscience Laboratory, Department of Physics, Jadavpur University, 700032, Kolkata, India aut NATIONALLICENCE 700 1- Ghosh P.K. Thin Film & Nanoscience Laboratory, Department of Physics, Jadavpur University, 700032, Kolkata, India aut NATIONALLICENCE 700 1- Khan S. Thin Film & Nanoscience Laboratory, Department of Physics, Jadavpur University, 700032, Kolkata, India aut NATIONALLICENCE 700 1- Mitra M.K. Nanoscience and Technology Center, Jadavpur University, 700032, Kolkata, India aut NATIONALLICENCE 700 1- Chattopadhyay K.K. Thin Film & Nanoscience Laboratory, Department of Physics, Jadavpur University, 700032, Kolkata, India aut NATIONALLICENCE 773 0- Applied Physics A Springer-Verlag 86/1(2007-01-01), 139-143 0947-8396 86:1<139 2007 86 339 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer