2D XANES-XEOL mapping: observation of enhanced band gap emission from ZnO nanowire arrays.
Using 2D XANES-XEOL spectroscopy, it is found that the band gap emission of ZnO nanowire arrays is substantially enhanced i.e. that the intensity ratio between the band gap and defect emissions increases by more than an order of magnitude when the excitation energy is scanned across the O K-edge. Possible mechanisms are discussed.
Department of Chemistry, The University of Western Ontario, 1151 Richmond Street, London, Ontario N6A 5B7, Canada. tsham@uwo.ca.
Zhiqiang
Z
Wang
Xiaoxuan
X
Guo
Tsun-Kong
TK
Sham