Electronic and Mechanical Coupling in Bent ZnO Nanowires.

Han, Xiaobing; Kou, Liangzhi; Lang, Xiaoli; Xia, Jianbai; Wang, Ning; Qin, Rui; Lu, Jing; Xu, Jun et al. · Adv Mater · 2009

basic_science · Level V

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Abstract

A red shift of the exciton of ZnO nanowires is efficiently produced by bending strain, as demonstrated by a low-temperature (81 K) cathodoluminescence (CL) study of ZnO nanowires bent into L- or S-shapes. The figure shows a nanowire (Fig. a) with the positions of CL measurements marked. The corresponding CL spectra-revealing a peak shift and broadening in the region of the bend-are shown in Figure b.