Supplemental Dataset

1. Preparation of ZnO QDs with defect states (w-ZnO QDs). 2. The photoelectric performance of bare CuO, (w-ZnO)/CuO and (w/o-ZnO)/CuO photodetectors under 325 nm laser irradiation. 3. UV-vis absorption spectra of CuO NRs, w-ZnO QDs, and w/o-ZnO QDs. 4. The photoresponse of CuO, (w-ZnO)/CuO, and (w/o-ZnO)/CuO photodetectors under laser irradiation with different wavelengths. 5. Performance comparison of our 0D/1D (w-ZnO)/CuO photodetector with the reported 0D/1D heterojunction photodetectors.