Large-view-field imaging device

Abstract

The invention, which belongs to the technical field of photoelectric detection, discloses a large-view-field imaging device comprising a surface microstructure, a substrate layer, a buffer layer, a pixel array and a passivation layer. The pixel array comprises at least one pixel unit, and each pixel unit comprises an n + type doping layer, an absorption layer and a p + type doping layer; an n + type electrode penetrating through the passivation layer is led out from the buffer layer of the substrate layer, and a p + type electrode penetrating through the passivation layer is led out from the p + type doping layer; the surface microstructure can change the transmission path of light, so that incident light signals are converged through the focusing effect of the surface microstructure, the converged light signals are transmitted to the pixel array to generate photo-induced electron hole pairs capable of freely moving, and electric signals are formed under the application of bias voltage. The large-view-field imaging device has the advantages of being large in imaging view field, small in pixel unit size and the like, and the pixel units can be applied to visible light imaging, infrared imaging and ultraviolet imaging according to different materials.

Description

technical field [0001] The invention relates to the technical field of photoelectric detection, in particular to an imaging device with a large field of view. Background technique [0002] Photodetector is an important optoelectronic device that converts incident radiation signal into electrical signal output. Imaging devices form observable images through photoelectric conversion of photodetectors, and are widely used in military and civilian fields. [0003] Photoelectric imaging devices occupy a very important position in military and civilian applications, and are widely used in the fields of investigation, tracking, early warning, and confrontation. Visible light imaging technology has been popularized in military (reconnaissance, early warning, tracking, etc.), high-speed image transmission and processing aerospace, multi-spectral hyperspectral remote sensing, medical medical diagnosis and testing, etc. Products of visible light imaging and infrared imaging devices a...

AI Technical Summary

Problems solved by technology

These large-scale detector array sizes are the most direct way to increase the field of view of imaging devices, but this method has a long design cycle, high cost, and physical limitations

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