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High-performance UV–Vis–NIR photodetectors based on perovskite/PDPP3T polymer composites by Guoxin Li; Yukun Wang; Lixiang Huang; Xiaoxiao Zhang; Jia Yang; Xin Qiu; Wenhong Sun is a Materials Science article available to read on EtoBox.

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The composite thin film photodetector in this study combines the characteristics of MAPbI3 material for near-ultraviolet-visible light and PDPP3T:PC71BM material for near-infrared light absorption, resulting in efficient light harvesting. To fabricate high-performance photodetectors, we optimized the photodetector structure, thin film fabrication process, solute concentration, and photoactive layer thickness. Finally, we obtained a photodetector with a broad spectral detection range in the near-ultraviolet-visible-near-infrared (UV–vis–NIR). The detectivity (D*) of our prepared UV–vis–NIR photodetector at 380 nm, 655 nm and 848 nm is 1.24 × 1013 jones, 2.13 × 1013 jones and 1.59 × 1013 jones, respectively. This is one of the best performances among polymer photodetectors reported so far and is comparable to commercial inorganic silicon-based PDs. In addition, the optimal composite thin film photodetector exhibits a fast response speed (trise/tfall = 109/49 μs), a linear dynamic range of 100 dB, and excellent stability. Furthermore, the PDPP3T:PC71BM active layer can effectively suppress the leakage current in the reverse biased region, which enables the device to obtain an ultra-lo

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Author

Guoxin Li; Yukun Wang; Lixiang Huang; Xiaoxiao Zhang; Jia Yang; Xin Qiu; Wenhong Sun

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Materials Science (Physical Sciences)