Cathodoluminescence study of widegap-semiconductor nanowires T. Sekiguchi, Q. Liu, T. Tanaka, J. Hu, Y. Zhu and Y. Bando Eur. Phys. J. Appl. Phys., 27 1-3 (2004) 107-109 Published online: 15 July 2004 DOI: 10.1051/epjap:2004062