Abstract Polydiacetylene (PDA) films are shown enabling the combination of graphene transfer and photodetector fabrication into one step. Under the assistance of PDA, centimeter pieces of graphene can be acquired with free of broken or fractures. The constructed PDA/graphene hybrid films demonstrate ultrahigh, gate-tunable responsivity (R) and detectivity (D*) from UV to visible wavelengths, for instance, statistical R and D* at 320 nm achieves 556 A W−1 and 6.0*1011 Jones at the irradiance of 0.24 mW cm−2, indicating their superior broadband and sensitive detecting abilities. Kinetic response of our devices is not fast as the cost of high responsivity, which, however, can be efficiently amended by applying potential pulses through back gate electrodes. If supported PDA/graphene films on polymer substrate, the devices can still work reliably after being bended 25,000 cycles, and even can respond to light stimulus evidently at a heavily-stretched state created by a completely-folded human finger, revealing their remarkable flexibilities. The developed strategy of killing two birds (graphene transfer and functionalization) with one stone (PDA films) is highly desirable for developing graphene devices. And, the constructed ultrasensitive PDA/graphene photodetectors have considerable opportunities to be used in assorted photosensing areas that may not have critical requirement on operating speed.

中文翻译：

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石墨烯光电探测器，聚二乙炔作为转移支持层和光吸收层：灵活、宽带、超高光响应性和探测率

摘要 聚二乙炔 (PDA) 薄膜能够将石墨烯转移和光电探测器制造合二为一。在PDA的帮助下，可以得到没有断裂或断裂的厘米级石墨烯。构建的 PDA/石墨烯混合薄膜表现出从紫外到可见光波长的超高、栅极可调响应率 (R) 和探测率 (D*)，例如，320 nm 处的统计 R 和 D* 达到 556 AW-1 和 6.0*1011 琼斯在 0.24 mW cm−2 的辐照度下，表明它们具有优越的宽带和灵敏的检测能力。我们器件的动力学响应并不像高响应性的成本那样快，但是，可以通过通过背栅电极施加电位脉冲来有效地修正。如果在聚合物基材上支持 PDA/石墨烯薄膜，这些设备在弯曲 25,000 次循环后仍然可以可靠地工作，甚至可以在完全折叠的人手指产生的严重拉伸状态下对光刺激做出明显反应，显示出其非凡的灵活性。用一颗石头（PDA 薄膜）杀死两只鸟（石墨烯转移和功能化）的开发策略对于开发石墨烯设备非常理想。而且，构建的超灵敏 PDA/石墨烯光电探测器有相当多的机会用于各种光敏领域，这些领域可能对运行速度没有严格要求。用一颗石头（PDA 薄膜）杀死两只鸟（石墨烯转移和功能化）的开发策略对于开发石墨烯设备非常理想。而且，构建的超灵敏 PDA/石墨烯光电探测器有相当多的机会用于各种光敏领域，这些领域可能对运行速度没有严格要求。用一颗石头（PDA 薄膜）杀死两只鸟（石墨烯转移和功能化）的开发策略对于开发石墨烯设备非常理想。而且，构建的超灵敏 PDA/石墨烯光电探测器有相当多的机会用于各种光敏领域，这些领域可能对运行速度没有严格要求。