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Perovskite-like Silver Halide Single-Crystal Microbelt Enables Ultrasensitive Flexible X-ray Detectors
ACS Nano ( IF 15.8 ) Pub Date : 2023-01-08 , DOI: 10.1021/acsnano.2c10318 Kailian Dong 1, 2 , Hai Zhou 3 , Wenlong Shao 1 , Zheng Gao 1 , Fang Yao 1 , Meng Xiao 1 , Jiashuai Li 1 , Yongjie Liu 1 , Shuxin Wang 1 , Shun Zhou 1 , Hongsen Cui 1 , Minchao Qin 4 , Xinhui Lu 4 , Chen Tao 1 , Weijun Ke 1 , Guojia Fang 1, 2
ACS Nano ( IF 15.8 ) Pub Date : 2023-01-08 , DOI: 10.1021/acsnano.2c10318 Kailian Dong 1, 2 , Hai Zhou 3 , Wenlong Shao 1 , Zheng Gao 1 , Fang Yao 1 , Meng Xiao 1 , Jiashuai Li 1 , Yongjie Liu 1 , Shuxin Wang 1 , Shun Zhou 1 , Hongsen Cui 1 , Minchao Qin 4 , Xinhui Lu 4 , Chen Tao 1 , Weijun Ke 1 , Guojia Fang 1, 2
Affiliation
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Lead halide perovskite single crystals have attracted wide interest in the field of X-ray detection due to their excellent photophysical properties. However, their inherent toxicity and high thickness restrict their applications in flexible devices. In this paper, designing a micronanometer-scale X-ray detector based on all-inorganic lead-free CsAg2I3 (CAI) single crystal microbelts (MBs) has addressed the above issues. These CAI single crystal MBs can be synthesized on various substrates with high crystal quality and excellent stability. Based on their excellent characteristics of the CAI MBs, we fabricate single CAI MB devices with an Au/CAI/Au structure, which shows not only good ultraviolet photoresponse characteristics, but also excellent X-ray detection performance. The optimized CAI photodetectors exhibit a responsivity of 23.59 mA/W, a high detectivity of 1010 Jones, and a fast response speed. For X-ray detection performance, a sensitivity of up to 515.49 μC Gyair–1 cm–2 and a detection limit of as low as 14.65 μGyair s–1 are achieved with outstanding operation stability and excellent long-term stability. Furthermore, our devices also showed excellent applicability for X-ray imaging, which is promising for their use in X-ray detection and imaging. Finally, flexible X-ray detectors are fabricated by using thin CAI single-crystal MBs and demonstrate good flexibility under different bending radii and bending cycles. Our work shows the potential for developing highly sensitive flexible integrated micro/nano optoelectronic devices by using lead-free perovskite analogue single crystals.
中文翻译：
类钙钛矿卤化银单晶微带可实现超灵敏柔性 X 射线探测器
卤化铅钙钛矿单晶因其优异的光物理性质而在X射线检测领域引起了广泛的兴趣。然而，它们固有的毒性和高厚度限制了它们在柔性器件中的应用。本文设计了一种基于全无机无铅CsAg 2 I 3 (CAI)单晶微带(MBs)的微纳米级X射线探测器，解决了上述问题。这些CAI单晶MB可以在各种基底上合成，具有高晶体质量和优异的稳定性。基于CAI MB的优异特性，我们制造了Au/CAI/Au结构的单CAI MB器件，该器件不仅表现出良好的紫外光响应特性，而且具有优异的X射线探测性能。优化后的CAI光电探测器具有23.59 mA/W的响应度、10 10 Jones的高探测率和快速的响应速度。 X射线检测性能方面，灵敏度高达515.49 μC Gy Air –1 cm –2 ，检测限低至14.65 μGy Air s –1 ，具有出色的运行稳定性和优异的长期稳定性。此外，我们的设备还表现出出色的 X 射线成像适用性，这在 X 射线检测和成像中的应用前景广阔。最后，利用薄的CAI单晶MB制造了柔性X射线探测器，并在不同的弯曲半径和弯曲周期下表现出良好的灵活性。我们的工作展示了利用无铅钙钛矿模拟单晶开发高灵敏度柔性集成微/纳米光电器件的潜力。
更新日期：2023-01-08
中文翻译：
类钙钛矿卤化银单晶微带可实现超灵敏柔性 X 射线探测器
卤化铅钙钛矿单晶因其优异的光物理性质而在X射线检测领域引起了广泛的兴趣。然而，它们固有的毒性和高厚度限制了它们在柔性器件中的应用。本文设计了一种基于全无机无铅CsAg 2 I 3 (CAI)单晶微带(MBs)的微纳米级X射线探测器，解决了上述问题。这些CAI单晶MB可以在各种基底上合成，具有高晶体质量和优异的稳定性。基于CAI MB的优异特性，我们制造了Au/CAI/Au结构的单CAI MB器件，该器件不仅表现出良好的紫外光响应特性，而且具有优异的X射线探测性能。优化后的CAI光电探测器具有23.59 mA/W的响应度、10 10 Jones的高探测率和快速的响应速度。 X射线检测性能方面，灵敏度高达515.49 μC Gy Air –1 cm –2 ，检测限低至14.65 μGy Air s –1 ，具有出色的运行稳定性和优异的长期稳定性。此外，我们的设备还表现出出色的 X 射线成像适用性，这在 X 射线检测和成像中的应用前景广阔。最后，利用薄的CAI单晶MB制造了柔性X射线探测器，并在不同的弯曲半径和弯曲周期下表现出良好的灵活性。我们的工作展示了利用无铅钙钛矿模拟单晶开发高灵敏度柔性集成微/纳米光电器件的潜力。
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