1：Experimental Design and Method Selection:

The study involved the design of a spray coating platform for preparing colloidal ternary CdSeTe QD film for photodetectors. A mixture solvent with water and ethanol was used to enhance the adhesive force between QDs and the substrate interface.

2：Sample Selection and Data Sources:

Colloidal CdSeTe QDs were synthesized and used as the active material. The substrates were FTO covered glasses treated with UV-ozone.

3：List of Experimental Equipment and Materials:

Chemicals included selenium powder, cadmium oxide, tellurium powder, and others. Equipment included a scanning electron microscope (SU8020, Hitachi Co.), UV-vis spectrophotometer (Puxi-T10, PERSEE), and others.

4：Experimental Procedures and Operational Workflow:

The QDs were synthesized, ligands were exchanged, and the QDs were dissolved in a mixture of deionized water and ethanol. The QDs were then spray-coated onto the substrate under controlled conditions.

5：Data Analysis Methods:

The performance of the photodetectors was evaluated based on current density-voltage curves, responsivity, detectivity, and rise time.