[11a-Z26-1~13] 9.2 Nanoparticles, Nanowires and Nanosheets

△ [11a-Z26-6] Formation and optical characteristics of Tm,Yb-codoped ZnO nanowires on Silicon substrates by sputtering-assisted MOCVD

〇Naoto Nishiyama¹, Jun Tatebayashi¹, Shuhei Ichikawa¹, Yasufumi Fujiwara¹ (1.Osaka Univ.)

Keywords:nanowire, wavelength conversion, Zinc oxide

Down conversion using rare-earth elements has drawn scientific attention as a technique for improving the energy conversion efficiency of photovoltaics. We have so far observed the energy transfer between Tm luminescence at 490 nm and Yb luminescence at 980 nm by co-doping Tm and Yb into ZnO nanowires. In this study, we demonstrate the growth of ZnO nanowires on Si substrates, towards application in Si-based photovoltaics, and achieve rare-earth luminescence which is comparable to sapphire substrates.