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Author |
Lee, Y.H.; Lee, W.-J.; Lee, G.S.; Park, J.Y.; Yuan, B.; Won, Y.; Mun, J.; Yang, H.; Baek, S.-D.; Lee, H.; Oh, J.H.; Pennycook, T.J.; Kim, G.; Mei, J.; Dou, L. |
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Title |
Large-scale 2D perovskite nanocrystals photodetector array via ultrasonic spray synthesis |
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A1 Journal article |
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Year  |
2025 |
Publication |
Advanced materials |
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Volume |
37 |
Issue |
12 |
Pages |
2417761-11 |
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Keywords |
A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT) |
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Abstract |
2D perovskite (PVSK) single crystals have received significant attention due to their unique optical and optoelectronic properties. However, current synthesis methods face limitations, particularly in large-area fabrication, which remain critical barriers to practical applications. In this study, the synthesis of red/green/purple-blue-colored 2D PVSK nanocrystals over a large area (4-inch wafer) and the fabrication of high-performance photodetector arrays are presented via a facile yet efficient spray-coating approach with a liquid-bridge transport effect. The photodetector array achieves 100% working yield, high photo-responsivity (1.5 x 106 A W-1) and specific-detectivity (1.1 x 1016 Jones) with competitive photomapping characteristics. An intelligent vision system for automatic shape recognition is further demonstrated with a recognition rate exceeding 90%. This study provides significant advances in the scalable synthesis of nanoscale 2D PVSK crystals, their integration into large-area optoelectronic devices, and their potential use in artificial-intelligence systems. |
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Wos |
WOS:001424426800001 |
Publication Date |
2025-02-19 |
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ISSN |
0935-9648 |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Open Access |
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no |
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Call Number |
UA @ admin @ c:irua:212541 |
Serial |
9445 |
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