Field effect transistor chiral sensor and manufacture method thereof

Abstract

The invention discloses a field effect transistor chiral sensor and a manufacture method thereof. By utilizing the structure of a field effect transistor, the chiral sensor comprises a substrate, a gate electrode, a gate insulating layer, an active layer, a source electrode and a drain electrode. The chiral sensor is characterized in that the active layer is made of a quantum dot material with chiral recognizing and detecting function. The quantum dot material of the active layer is a semiconductor nano microcrystal which is modified by chiral molecules and has the size of smaller than 100nm.The invention sensor capable of detecting a chiral substance by using a quantum dot film with the chiral recognizing and detecting function as the active layer of the field effect transistor on the basis of the quantum dot field effect transistor and the manufacture method thereof. The fluorescent chiral molecule modified quantum dot can be also made into a film by the chiral sensor for being used as the field effect transistor active layer, thereby overcoming the defect of chiral molecule detection by the traditional homogeneous phase fluorescent sensor and realizing a more stable detecting signal.

Description

technical field [0001] The invention relates to a sensor for chiral recognition research, in particular to a field effect transistor chiral sensor based on field effect transistor structure and application of quantum dot characteristics and a preparation method thereof. Background technique [0002] The unique properties of quantum dots are based on their own quantum effects. When the particle size enters the nanoscale, size confinement will cause size effects, quantum confinement effects, macroscopic quantum tunneling effects, and surface effects, thus deriving nanosystems with conventional The different low-dimensional physical properties of the system and the micro system show many physical and chemical properties different from those of the macroscopic material. It has extremely broad application prospects in nonlinear optics, magnetic media, catalysis, medicine and functional materials. The continuous development of science and information technology and basic research ...

AI Technical Summary

Problems solved by technology

However, when this method detects chiral molecules, the main substance and the chiral selective agent are combined in the liquid phase, and the main substance system to be tested is easily polluted. Generally, it can only be used once, and the application of the sensor is greatly limited.

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