Highly Semiconducting One-Dimensional Porous ZnO Nanorod Array Nanogenerators for Mechanical Energy Harvesting Functions

Figure 4

(a) XRD pattern of smooth ZnO NRs and M: ZnO NRs. (b) Raman spectrum of smooth ZnO NRs and M: ZnO NRs. (c) Low-temperature PL spectrum of smooth ZnO NRs and M: ZnO NRs. (d) XPS spectra of Zn 2p of smooth ZnO NRs and M: ZnO NRs. (e, f) XPS spectra of O 1s of smooth ZnO NRs and M: ZnO NRs.

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