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Title: Gradient bandgap-tunable perovskite microwire arrays toward flexible color-cognitive devices
Authors: Fu, Yue
Yuan, Meng
Zhao, Yingjie
Dong, Meiqiu
Guo, Yangwu
Wang, Kui
Jin, Chunqi
Feng, Jiangang
Wu, Yuchen
Jiang, Lei
Keywords: Science::Physics
Issue Date: 2023
Source: Fu, Y., Yuan, M., Zhao, Y., Dong, M., Guo, Y., Wang, K., Jin, C., Feng, J., Wu, Y. & Jiang, L. (2023). Gradient bandgap-tunable perovskite microwire arrays toward flexible color-cognitive devices. Advanced Functional Materials, 33(11), 2214094-.
Journal: Advanced Functional Materials
Abstract: Color-cognitive detection plays an important role in many developing applications such as optical sensing, high-solution imaging, wearable biometric monitoring, and human visual cognitive system. Although color-cognitive devices have been demonstrated, the large size, complex manufacturing, high cost, and non-flexible processing impede their applications for distinguishing color information. Herein, gradient bandgap-tunable perovskite microwire arrays with excellent crystallinity and pure crystallographic orientation are realized by the synergy of the capillary-bridge assembly method and mild component engineering processing, yielding high-performance integrated color-cognitive devices with the spectral resolution of 14 nm ranging from 405 nm to 760 nm, responsivities over 103 A W−1, and detectivities over 1015 Jones. Furthermore, the integrated flexible color-cognitive devices are demonstrated for accurately recognizing similar colors, which can be applied in color blindness correction. The efficient color recognition performances, together with the flexible processing, open new opportunities for the on-chip integration of wearable devices based on microwire arrays.
ISSN: 1616-301X
DOI: 10.1002/adfm.202214094
Schools: School of Physical and Mathematical Sciences 
Rights: © 2023 Wiley-VCH GmbH. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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