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Miniaturized Multispectral Detector Derived from Gradient Response Units on Single MAPbX3 Microwire
Advanced Materials ( IF 27.4 ) Pub Date : 2021-12-22 , DOI: 10.1002/adma.202108408 Xiaobao Xu 1 , Zeyao Han 1 , Yousheng Zou 1 , Junyu Li 1 , Yu Gu 1 , Dawei Hu 1 , Yin He 1 , Jiaxin Liu 1 , Dejian Yu 2 , Fei Cao 2 , Haibo Zeng 1
Advanced Materials ( IF 27.4 ) Pub Date : 2021-12-22 , DOI: 10.1002/adma.202108408 Xiaobao Xu 1 , Zeyao Han 1 , Yousheng Zou 1 , Junyu Li 1 , Yu Gu 1 , Dawei Hu 1 , Yin He 1 , Jiaxin Liu 1 , Dejian Yu 2 , Fei Cao 2 , Haibo Zeng 1
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Miniaturized multispectral detectors are urgently desired given the unprecedented prosperity of smart optoelectronic chips for integrated functions including communication, imaging, scientific analysis, etc. However, multispectral detectors require complicated prism optics or interference/interferometric filters for spectral recognition, which hampers the miniaturization and their subsequent integration in photonic integrated circuits. In this work, inspired by the advance of computational imaging, optical-component-free miniaturized multispectral detector on 4 mm gradient bandgap MAPbX3 microwire with a diameter of 30 µm, is reported. With accurate composition engineering, halide ions in MAPbX3 microwire vary from Cl to I giving in the gradual variation of optical bandgap from 2.96 to 1.68 eV along axis. The sensing units on MAPbX3 microwire offer the response edge ranging from 450 to 790 nm with the responsivity over 20 mA W−1, −3dB width over 450 Hz, LDR of ≈60 dB, and a noise current less than ≈1.4 × 10−12 A Hz−0.5. As a result, the derived miniaturized detector achieves the function of multispectral sensing and discrimination with spectral resolution of ≈25 nm and mismatch of ≈10 nm. Finally, the proof-of-concept colorful imaging is successfully conducted with the miniaturized multispectral detector to further confirm its application in spectral recognition.
中文翻译：
从单个 MAPbX3 微线上的梯度响应单元派生的小型化多光谱探测器
鉴于用于通信、成像、科学分析等集成功能的智能光电芯片的空前繁荣，迫切需要小型化多光谱探测器。然而，多光谱探测器需要复杂的棱镜光学或干涉/干涉滤光片进行光谱识别，这阻碍了小型化及其随后集成在光子集成电路中。在这项工作中，受计算成像进步的启发，报告了在直径为 30 µm 的4 mm 梯度带隙 MAPbX 3微线上的无光学元件小型化多光谱探测器。通过精确的成分工程，MAPbX 3中的卤离子微线从 Cl 到 I 变化，光学带隙沿轴从 2.96 到 1.68 eV 逐渐变化。MAPbX 3 microwire 上的传感单元提供 450 至 790 nm 范围内的响应边缘，响应度超过 20 mA W -1，-3dB 宽度超过 450 Hz，LDR ≈60 dB，噪声电流小于 ≈1.4 × 10 -12赫兹-0.5 . 因此，衍生的小型化探测器实现了多光谱传感和鉴别功能，光谱分辨率约为 25 nm，失配约为 10 nm。最后，利用小型化多光谱探测器成功进行了概念验证彩色成像，进一步证实了其在光谱识别中的应用。
更新日期：2021-12-22
中文翻译：
从单个 MAPbX3 微线上的梯度响应单元派生的小型化多光谱探测器
鉴于用于通信、成像、科学分析等集成功能的智能光电芯片的空前繁荣，迫切需要小型化多光谱探测器。然而，多光谱探测器需要复杂的棱镜光学或干涉/干涉滤光片进行光谱识别，这阻碍了小型化及其随后集成在光子集成电路中。在这项工作中，受计算成像进步的启发，报告了在直径为 30 µm 的4 mm 梯度带隙 MAPbX 3微线上的无光学元件小型化多光谱探测器。通过精确的成分工程，MAPbX 3中的卤离子微线从 Cl 到 I 变化，光学带隙沿轴从 2.96 到 1.68 eV 逐渐变化。MAPbX 3 microwire 上的传感单元提供 450 至 790 nm 范围内的响应边缘，响应度超过 20 mA W -1，-3dB 宽度超过 450 Hz，LDR ≈60 dB，噪声电流小于 ≈1.4 × 10 -12赫兹-0.5 . 因此，衍生的小型化探测器实现了多光谱传感和鉴别功能，光谱分辨率约为 25 nm，失配约为 10 nm。最后，利用小型化多光谱探测器成功进行了概念验证彩色成像，进一步证实了其在光谱识别中的应用。
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