In this work we report on a light analysis system based on narrowband colloidal PbS quantum dot photodetectors. The proposed system is able to identify both the peak wavelength of a quasi-monochromatic radiation and the emission spectrum of an arbitrary light source, in the visible and near infrared spectral range, starting from photocurrent measurements of several photoconductive devices with different spectral responses. We demonstrate the feasibility of our approach, optimizing several system parameters and obtaining a mean error of 5 nm and a maximum resolution of 40 nm as regards the peak wavelength identification and the spectral reconstruction, respectively.

在这项工作中，我们报告了一种基于窄带胶体PbS量子点光电探测器的光分析系统。所提出的系统能够从几个具有不同光谱响应的光电导器件的光电流测量开始，识别可见光和近红外光谱范围内的准单色辐射的峰值波长和任意光源的发射光谱。我们展示了我们的方法的可行性，优化了几个系统参数，并分别获得了5 nm的平均误差和40 nm的最大分辨率，分别针对峰值波长识别和光谱重建。