Electron microscopy and cathodoluminescence in electrospun nanodimensional structures: challenges and opportunities

E. M. Campo; A. Meléndez; K. Morales; J. Poplawsky; J. J. Santiago-Avilés; I. Ramos

doi:10.1117/12.866761

10 June 2010 Electron microscopy and cathodoluminescence in electrospun nanodimensional structures: challenges and opportunities

E. M. Campo, A. Meléndez, K. Morales, J. Poplawsky, J. J. Santiago-Avilés, I. Ramos

Author Affiliations +

Proceedings Volume 7729, Scanning Microscopy 2010; 77290T (2010) https://doi.org/10.1117/12.866761
Event: Scanning Microscopy 2010, 2010, Monterey, California, United States

Abstract

GaN nanofibers were sintered by electrospinning and analyzed by electron microscopy techniques to study morphology and grain size. After heat treatment, the fibers showed thinner mats with polycrystalline grains with size on the order of 10 nm. For the first time in electospun GaN, optical properties were investigated by room temperature cathodoluminescence. Despite polycrystallinity, the fibers produced a luminescence signal. The NBE might be blueshitfted (by 1.1 eV) by the electron-confinement effect of excitons in the nm-sized grains. The origin of the other two emissions is also compared to GaN fibres sintered by alternative techniques. The existence of a NBE signal from GaN nanofibres could open the door to applications in nanophotonics.

Citation Download Citation

E. M. Campo, A. Meléndez, K. Morales, J. Poplawsky, J. J. Santiago-Avilés, and I. Ramos "Electron microscopy and cathodoluminescence in electrospun nanodimensional structures: challenges and opportunities", Proc. SPIE 7729, Scanning Microscopy 2010, 77290T (10 June 2010); https://doi.org/10.1117/12.866761

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available