Muscovite mica, a natural layered material with excellent flexibility and super flat surface, which can be well integrated into flexible optoelectronic devices. In addition to its ability to withstand higher temperatures than conventional flexible substrates, its natural high surface energy and hydrophilicity give muscovite mica a good adsorption capacity for two-dimensional materials. Here, we combined mica substrate with a thin film of MoS2 nanosheets floating on the water surface to produce a flexible, heat-resistant photodetector. The device exhibits excellent response stability, superior flexibility and fast response time (976 ms of rise time and 161 ms of decay time). Moreover, the responsivity of 8.45 μA∙W-1 and the detectivity of 4.1 × 107 Jones are realized respectively. After 500 bending cycles, the photodetector still possesses the ability to output the photocurrent signal continuously and stably. What's more, the devices have a consistent performance after 300 °C bake, showing excellent stability and fast response. This work shows great potential for flexible photodetectors and contributed to the development of flexible optoelectronic devices from the room-temperature to heat-resistance practical applications.

中文翻译：

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基于透明白云母基板上的 MoS2 纳米片薄膜的柔性耐热光电探测器

白云母是一种天然的层状材料，具有优异的柔韧性和超平坦的表面，可以很好地集成到柔性光电器件中。除了能够承受比传统柔性基材更高的温度外，其天然的高表面能和亲水性使白云母对二维材料具有良好的吸附能力。在这里，我们将云母基板与漂浮在水面上的 MoS2 纳米片薄膜相结合，制成了一种灵活、耐热的光电探测器。该器件具有出色的响应稳定性、出色的灵活性和快速的响应时间（上升时间为 976 毫秒，衰减时间为 161 毫秒）。此外，分别实现了 8.45 μA∙W-1 的响应度和 4.1 × 107 Jones 的检测率。经过 500 次弯曲循环后，光电探测器仍具备连续稳定输出光电流信号的能力。更重要的是，器件在300°C烘烤后具有一致的性能，表现出出色的稳定性和快速响应。这项工作显示了柔性光电探测器的巨大潜力，并有助于开发从室温到耐热实际应用的柔性光电器件。