Siyuan Laboratory, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy Materials, Department of Physics, Jinan University, Guangzhou, Guangdong 510632, People's Republic of China.
Siyuan Laboratory, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy Materials, Department of Physics, Jinan University, Guangzhou, Guangdong 510632, People's Republic of China.
J Colloid Interface Sci. 2022 Nov;625:297-304. doi: 10.1016/j.jcis.2022.05.117. Epub 2022 May 27.
Dual-color or multispectral imaging based on conventional optical imaging techniques is suffering from the bottleneck of complex manufacturing and time consumption caused by multiple imaging. Herein, we develop a dual-color computational imaging system combining a vertically stacked dual-channel dual-band perovskite photodetectors (PDs) and the advanced Fourier imaging algorithm. Significantly, our imaging system bypasses the complex fabrication process of high-density dual-band PD arrays and is enabled to capture two high-resolution spectral images at the same time. Based on the experiments and simulations, we confirm that the spectral overlap of dual-band PDs will cause detrimental effect for color identification, and optimizing the bandwidth spectrum is beneficial for achieving much better spectral imaging. Moreover, we have further improved the imaging quality by increasing the sampling rate and suppressing current fluctuations. We suggest that these results provide important interesting insights for the development of advanced imaging systems, including IR imaging, THz imaging, multispectral/hyperspectral imaging, etc.
基于传统光学成像技术的双色或多光谱成像是受到复杂制造和多次成像所导致的耗时问题的限制。在此，我们开发了一种结合了垂直堆叠双通道双频钙钛矿光电探测器（PD）和先进的傅里叶成像算法的双色计算成像系统。值得注意的是，我们的成像系统绕过了高密度双频 PD 阵列的复杂制造过程，并能够同时捕获两个高分辨率光谱图像。基于实验和模拟，我们证实了双频 PD 的光谱重叠会对颜色识别造成有害影响，优化带宽谱有利于实现更好的光谱成像。此外，我们通过增加采样率和抑制电流波动进一步提高了成像质量。我们建议这些结果为先进成像系统的发展提供了重要的有趣见解，包括红外成像、太赫兹成像、多光谱/高光谱成像等。
