Abstract Low-dimensional carbon materials, such as conducting graphene, semiconducting C60 and their hybrids, have recently received a great deal of attention for the potential applications in low-cost flexible and wearable nanoelectronics, due to their remarkable mechanical, electrical and optoelectronic properties. While graphene exhibits intrinsically weak absorption and C60 is typically associated with low carrier mobility and short exciton diffusion length, the marriage of two materials is a synergetic route to overcome these technical short-comings. Here, we fabricate a van der Waals bonded graphene/C60 hybrid on a plastic substrate to demonstrate a highly sensitive flexible photodetector. Intimate electronic coupling across the all-carbon interface allows highly efficient interfacial charge transfer, which effectively dissociates the electron-hole pairs and leads to significant photoresponse across ultraviolet to near-infrared (∼104 A/W @ 405 nm). Thanks to remarkable absorption of C60, it enables the detection of weak signals including those from a lighter and fluorescent lighting. Simultaneously, the photodetector exhibits extraordinary mechanical flexibility, allowing excellent electric conductivity and stable light detection under quite large tensile strain. Furthermore, the flexible devices still exhibit a satisfactory photoresponse after 6 months, indicating the excellent environmental robustness. This scalable all-caron hybrids may provide a viable route to produce the high-performance flexible optoelectronic devices.

中文翻译：

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基于范德华石墨烯/C60 异质结构的稳健、灵活和宽带光电探测器

摘要 低维碳材料，如导电石墨烯、半导体 C60 及其杂化物，由于其卓越的机械、电学和光电性能，在低成本柔性和可穿戴纳米电子学中的潜在应用最近受到了极大的关注。虽然石墨烯表现出固有的弱吸收，并且 C60 通常与低载流子迁移率和短激子扩散长度相关，但两种材料的结合是克服这些技术缺陷的协同途径。在这里，我们在塑料基板上制造了范德华键合石墨烯/C60 混合体，以展示高度灵敏的柔性光电探测器。全碳界面上的紧密电子耦合允许高效的界面电荷转移，这有效地解离了电子 - 空穴对并导致从紫外到近红外（~104 A/W @ 405 nm）的显着光响应。由于 C60 的显着吸收，它能够检测微弱信号，包括来自打火机和荧光灯的信号。同时，光电探测器表现出非凡的机械柔韧性，可在相当大的拉伸应变下实现出色的导电性和稳定的光检测。此外，柔性器件在 6 个月后仍表现出令人满意的光响应，表明其出色的环境稳定性。这种可扩展的全碳纤维混合体可能为生产高性能柔性光电器件提供了可行的途径。由于 C60 的显着吸收，它能够检测微弱信号，包括来自打火机和荧光灯的信号。同时，光电探测器表现出非凡的机械柔韧性，可在相当大的拉伸应变下实现出色的导电性和稳定的光检测。此外，柔性器件在 6 个月后仍表现出令人满意的光响应，表明其出色的环境稳定性。这种可扩展的全碳纤维混合体可能为生产高性能柔性光电器件提供了可行的途径。由于 C60 的显着吸收，它能够检测微弱信号，包括来自打火机和荧光灯的信号。同时，光电探测器表现出非凡的机械柔韧性，可在相当大的拉伸应变下实现出色的导电性和稳定的光检测。此外，柔性器件在 6 个月后仍表现出令人满意的光响应，表明其出色的环境稳定性。这种可扩展的全碳纤维混合体可能为生产高性能柔性光电器件提供了可行的途径。在相当大的拉伸应变下具有优异的导电性和稳定的光检测。此外，柔性器件在 6 个月后仍表现出令人满意的光响应，表明其出色的环境稳定性。这种可扩展的全碳纤维混合体可能为生产高性能柔性光电器件提供了可行的途径。在相当大的拉伸应变下具有优异的导电性和稳定的光检测。此外，柔性器件在 6 个月后仍表现出令人满意的光响应，表明其出色的环境稳定性。这种可扩展的全碳纤维混合体可能为生产高性能柔性光电器件提供了可行的途径。