| Surface plasmon resonance is a kind of special resonance phenomenon, which could been found on the surface of metal nanoparticles, when the free vibrating electron and the incident photon is under a certain vibration frequency. ZnSe is an important Ⅱ-Ⅵ compound semiconductor materials, its direct band gap at room temperature is about 2.67 eV, having a strong absorption to blue light at the wavelength of 460 nm. The main research content of this paper is the preparation of ZnSe nanoribbon and graphene films by vapor deposition method, and the preparation of indium nanoparticles modified graphene/ZnSe nanoribbon blue light photodetector, and we have made a system analysis about its optoelectronic characteristics.The synthetic hexagonal arrangement of indium nanoparticles array by template method, make it sure that indium nanoparticles with uniform arrangement, consistent with the diameter size by a variety of characterization methods and we know that it has a strong absorption peak to blue light by UV absorption spectrum. ZnSe nanoribbon was synthesis by vapor deposition method, and their sizes were uniform and smooth on the surface by the methods such as scanning electron microscopy and so on.We prepared the blue light photodetector based on graphene/ZnSe nanoribbon Schottky junction by the process of photolithography, electron beam and so on. Through the optoelectronic characteristics analysis of the changes about before and after modifying the indium nanoparticles, we find that the responsivity (R) increased from 26.5 A/W, to 6.47×102 A/W and the gain (G) increased from 71.6 to 1.75×103. Therefore, we have conclusion that the absorption of blue light can been improved by using the unique characteristics of the plasmon resonance of the indium nanoparticles, which could improve the overall performance of the device at a certain extent. |
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