量子点是一种纳米级别的半导体，通过对这种纳米半导体材料施加一定的电场或

Quantum dots are nano-scale semiconductors. By applying a certain electric field or light pressure to this nano-semiconductor material, they will emit light of a specific frequency, and the frequency of the emitted light will change with the size of the semiconductor However, by adjusting the size of this nano-semiconductor, the color of the light emitted can be controlled. Because this nano-semiconductor has the characteristic of limiting electrons and electron holes (Electron hole), this characteristic is similar to that of atoms in nature. Or molecules, so they are called quantum dots. The special structure of quantum dots makes it have surface effects, quantum size effects, dielectric confinement effects and macroscopic quantum tunneling effects. It exhibits many physical and chemical properties and special optical properties that are different from macroscopic bulk materials. It has great application prospects in many fields such as display, medicine, and solar cells. <br>This paper summarizes the research background, preparation methods and application status of colloidal quantum dot devices through literature analysis, and provides for the further development and application of colloidal quantum dot devices on the basis of clarifying the specific technical indicators and application fields of colloidal quantum dot devices. Reference material.

A quantum dot is a nanoscale semiconductor that emits a specific frequency of light by applying a certain electrical field or light pressure to such nano-semiconductor material, and the frequency of light emitted changes with the size of the semiconductor, so that the color of the light emitted by adjusting the size of the nano-semiconductor can be controlled because it has the characteristics of limiting electrons and electron holes (Electron holes), which are similar to atoms or molecules in nature. It is thus called a quantum dot. The special structure of quantum dot makes it have surface effect, quantum size effect, dielecter limit domain effect and macro quantum tunnel effect, which shows many different physical and chemical properties and special optical properties of macro block materials, which make it have great application prospects in many fields such as display, medicine and solar cells.<br>Through literature analysis, this paper summarizes the research background, preparation method and application status of collosome quantum dot devices, and provides reference material for the further development and application of collome quantum dot devices on the basis of clarifying the specific technical indicators and application areas of collome quantum dot devices.

Quantum dot is a kind of nanometer semiconductor. By applying a certain electric field or light pressure to the nanometer semiconductor material, they will emit light with a specific frequency, and the frequency of the light will change with the size of the semiconductor. Therefore, the color of the light can be controlled by adjusting the size of the nanometer semiconductor Quantum dots have the properties of limiting electrons and electron holes, which are similar to atoms or molecules in nature, so they are called quantum dots. The special structure of quantum dots makes them have surface effect, quantum size effect, dielectric confinement effect and macroscopic quantum tunneling effect. They show many physical and chemical properties and special optical properties different from macroscopic bulk materials, which make them have great application prospects in many fields such as display, medicine, solar energy cells and so on.<br>Through literature analysis, this paper summarizes the research background, preparation methods and application status of colloidal quantum dot devices. On the basis of clarifying the specific technical indicators and application fields of colloidal quantum dot devices, it provides reference materials for the further development and application of colloidal quantum dot devices.<br>