▎ 摘　　要

NOVELTY - The material has graphene-carbon nanotube composite film with negative charge formed as substrate. The substrate is statically self-assembled with poly diallyldimethylammonium chloride with positive charge and cadmium telluride quantum dot with negative charge, where diameter of the cadmium telluride quantum dot ranges from 4 to 6 nanometers. The substrate is ultrasonically washed with de-ionized water and ethanol, alternatively. The substrate is vacuum dried. A washed filter cake is loaded on the substrate. A dried substrate is soaked in acetone solution. USE - Cadmium telluride quantum dot grafted graphene-carbon nanotube composite film photo-switch material for preparing a photoelectric converter. ADVANTAGE - The material has simple preparation process and uniformly dispersed quantum dots on the film, better environmental adaptation, stable quality, and controllable electronic and optical properties by change of species of quantum dot and capacity of loaded quantum dots. The material has high photoelectric conversion rate. The material is used for preparing photoelectric converter having fast photo response performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a preparation method of cadmium telluride quantum dot grafted graphene-carbon nanotube composite film photo-switch material. DESCRIPTION OF DRAWING(S) - The drawing shows a photograph illustrating a cadmium telluride quantum dot grafted graphene-carbon nanotube composite film photo-switch material.