Stacked perovskite photodetectors for multi-color fluorescence detection. Issue 1 (10th December 2021)

• Record Type: Journal Article
• Authors: Zheng, Kai; Yang, Longkai; Liu, Haowei; Wang, Jiaqin; Cui, Jingqin; Chen, Xinyi; Li, Xin; Lu, Miao
• Is Part Of: Journal of materials chemistry. Volume 10:Issue 1(2022)
• Page Start: 321
• Page End: 328
• Publication Date: 2021-12-10
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d1tc04489c
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : Triple cation perovskite photodetectors with different feature bandgaps were stacked and sealed for multi-color fluorescence detection. Abstract : Triple cation perovskite photodetectors with different feature bandgaps were stacked and sealed for multi-color fluorescence detection. Fluorescence consisting of different wavelength photons could be absorbed sequentially by the corresponding layers in the stacked photodetectors, thereby promising a high quantum efficiency and allowing better spatial resolution in principle. Experimentally, fluorescent quantum dots of central wavelengths of 650 nm, 690 nm, and 777 nm were detected simultaneously in a mixed solution. The LODs of the three kinds of CdTe QDs are 6.16, 7.25 and 8.11 nM, respectively, and the deviation is smaller than 20%. The results show that the stacked perovskite detector is promising for the application of multi-color fluorescence analysis.