摘要：Multifunctional devices are of great interest for integration and miniaturization on the same platform, but simple addition of functionalities would lead to excessively large devices. Here, the photodetection and chemical sensing device is developed based on two-dimensional(2D) glassygraphene that meets similar property requirements for the two functionalities. An appropriate bandgap arising from the distorted lattice structure enables glassy graphene to exhibit comparable or even improved photodetection and chemical sensing capability, compared with pristine graphene. Due to strong interactions between glassy graphene and the ambient atmosphere, the devices are less sensitive to photoinduced desorption than the ones based on graphene. Consequently,the few-layer glassy graphene device delivers positive photoresponse, with a responsivity of 0.22 A W^(-1) and specific detectivity reaching ~10^(10) Jones under 405 nm ***, the intrinsic defects and strain in glassy graphene can enhance the adsorption of analytes, leading to high chemical sensing performance. Specifically, the extracted signalto-noise-ratio of the glassy graphene device for detecting acetone is 48, representing more than 50% improvement over the device based on graphene. Additionally, bias-voltage-and thickness-dependent volatile organic compound(VOC) sensing features are identified, indicating the few-layer glassy graphene is more sensitive. This study successfully demonstrates the potential of glassy graphene for integrated photodetection and chemical sensing, providing a promising solution for multifunctional applications further beyond.

摘要：随着薄膜材料的日益发展和新型薄膜材料的不断涌现,开发薄膜生长技术对于半导体和光电等科技领域的作用日益突出。本文主要介绍最近发展的聚合物辅助沉积从分子层面上控制生长高质量的薄膜材料。聚合物辅助沉积是一种生长高质量薄膜的化学水性溶液方法,将金属离子与聚合物通过络合、氢键或静电等方式形成一种均匀稳定的前驱体溶液,再经过超滤、成膜和热处理形成高质量的金属氧化物、金属碳化物、金属氮化物、金属单质、金属硫/硒化物等薄膜以及纳米粒子等化合物或复合功能材料。该方法中水溶性的聚合物能通过络合作用抑制金属离子的水解使得溶液稳定,并能精确控制薄膜的组分从而形成高质量的薄膜。该化学溶液方法的提出为科学技术领域提供了一种低成本和大面积制备薄膜的技术路线。本文最后总结和展望了聚合物辅助沉积法未来的挑战和发展方向。