Design and Application of Micro-Spectrometer Based on Quantum Dots Photodetector

Abstract

In this article, a micro-spectrometer was developed based on quantum dots photodetector. The quantum dots photodetector has higher sensitivity than CCD, and its photoconduction gain has achieved 1.11E8 under 0.01 picowatt irradiation at liquid nitrogen temperature. In addition, the quantum dots micro-spectrometer is coupled to the microscopic imaging spectrometer to form a dual-model microscopic imaging spectrometer, which carries out spectral collection and comparison of biological samples. The experimental results show that the transmission spectra of rat skin obtained by the dual-model microscopic imaging spectrometer are consistent, and the comparison and verification of the two spectral measurement systems are realized.