高性能二维钙钛矿CaNbO紫外光电探测器。
High-Performance Two-Dimensional Perovskite CaNbO UV Photodetectors.
作者信息
Zhang Yong, Li Siyuan, Li Ziliang, Liu Hui, Liu Xinya, Chen Jiaxin, Fang Xiaosheng
机构信息
Department of Materials Science, Fudan University, Shanghai 200433, P. R. China.
出版信息
Nano Lett. 2021 Jan 13;21(1):382-388. doi: 10.1021/acs.nanolett.0c03759. Epub 2020 Dec 18.
We first report two-dimensional (2D) perovskite CaNbO ultraviolet photodetectors (UV PDs), which are prepared via a facile calcination-exfoliation method. The 2D CaNbO PDs demonstrate high performance at 3 V at 280 nm, high responsivity (14.94 A W), high detectivity (8.7 × 10 Jones), high spectral selectivity (/ = 8.84 × 10), fast speed (0.08/5.6 ms), and long-term stability, exceeding those of most reported UV PDs. Furthermore, the CaNbO PDs integrated with poly(ethylene terephthalate) (PET) show excellent flexibility and have high linear dynamic range (96 dB). Our work provides a general strategy for searching new UV PDs based on numerous layered niobates. The CaNbO nanosheets may be one of the optimum semiconductor materials for next-generation high-performance UV PDs.
我们首次报道了二维（2D）钙铌氧紫外光电探测器（UV PDs），其通过简便的煅烧-剥离法制备。二维钙铌氧光电探测器在280 nm、3 V时表现出高性能，具有高响应度（14.94 A/W）、高探测率（8.7×10 Jones）、高光谱选择性（λ/Δλ = 8.84×10）、快速响应速度（0.08/5.6 ms）以及长期稳定性，超过了大多数已报道的紫外光电探测器。此外，与聚对苯二甲酸乙二酯（PET）集成的钙铌氧光电探测器表现出优异的柔韧性，并且具有高线性动态范围（96 dB）。我们的工作为基于众多层状铌酸盐寻找新型紫外光电探测器提供了一种通用策略。钙铌氧纳米片可能是下一代高性能紫外光电探测器的最佳半导体材料之一。
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