1：Experimental Design and Method Selection:

The study involved the fabrication of ZnO nanoseeds by magnetron sputtering and the sol?gel method, followed by the growth of ZnO nanorods on GaN via hydrothermal treatment to form p-GaN/n-ZnO nanorod heterojunctions. CsPbBr3 QDs were then deposited on the ZnO nanorod arrays to create LEDs.

2：Sample Selection and Data Sources:

CsPbBr3 QDs were synthesized using thermal implantation, and ZnO nanorods were grown on different ZnO nanoseeds prepared by magnetron sputtering and the sol?gel method.

3：List of Experimental Equipment and Materials:

Materials included Cs2CO3, oleic acid, 1-octadecene, oleylamine, lead bromide, toluene, hexane, zinc acetate, ethanolamine, ethanol, zinc nitrate, and hexamethylenetetramine. Equipment included a scanning electron microscope (JSM-7001F), transmission electron microscope (JEM-2100), fluorescence spectrophotometer (Cary Eclipse), and X-ray diffractometer (XRD-610Lab).

4：Experimental Procedures and Operational Workflow:

The process involved the synthesis of cesium oleate, preparation of CsPbBr3 QDs, synthesis of ZnO nanorods on different nanoseeds, and fabrication of LED devices by spin-coating CsPbBr3 QDs onto the nanorod arrays and depositing Ag electrodes.

5：Data Analysis Methods:

The study utilized SEM, TEM, HRTEM, fluorescence spectra, XRD, PL spectra, UV absorption, and emission spectra to analyze the properties of the materials and devices.