Graphene-black phosphorus printed photodetectors
Graphene-black phosphorus printed photodetectors
复制标题
DOI：
10.1088/2053-1583/acc74c
复制
发表时间：
2023-07-01
期刊：
影响因子：
5.5
通讯作者：
Ferrari, A. C.
中科院分区：
文献类型：
--
作者：
Akhavan, S.;Ruocco, A.;Ferrari, A. C.
由液相剥离(LPE)制备的层状材料(LMS)可用作光电子应用的构建块。然而，与机械剥离的薄片或化学气相沉积(CVD)制备的薄膜相比，基于LPE的印刷光电子器件受到迁移率、缺陷和陷阱状态的限制。在这里，我们提出了一种结合CVD和LPE LMS的可扩展制造技术来克服这些限制。我们使用喷墨打印在硅/二氧化硅石墨烯上的黑磷墨水，通过喷墨打印基于光刻的图形，以及用银墨打印的源极和漏极，来制备光电探测器(PD)。这些器件在488 nm处的外部响应率(R-ext)类似于337A W-1，工作范围从可见光(类似于488 nm)到短波红外(类似于2.7微米，R-ext类似于48 mA W-1)。我们还使用这种方法在纺织中最常用的聚酯织物上制造柔性PD，在1V的工作电压下，在488 nm处实现了类似于6 mA W-1的Rext。因此，我们通过喷墨打印将可扩展的CVD和LPE技术相结合，有望用于可穿戴和灵活的应用。
Layered materials (LMs) produced by liquid phase exfoliation (LPE) can be used as building blocks for optoelectronic applications. However, when compared with mechanically exfoliated flakes, or films prepared by chemical vapor deposition (CVD), LPE-based printed optoelectronic devices are limited by mobility, defects and trap states. Here, we present a scalable fabrication technique combining CVD with LPE LMs to overcome such limitations. We use black phosphorus inks, inkjet-printed on graphene on Si/SiO2, patterned by inkjet printing based lithography, and source and drain electrodes printed with an Ag ink, to prepare photodetectors (PDs). These have an external responsivity (R-ext)similar to 337 A W-1 at 488 nm, and operate from visible (similar to 488 nm) to short-wave infrared (similar to 2.7 mu m, R-ext similar to 48 mA W-1). We also use this approach to fabricate flexible PDs on polyester fabric, one of the most common used in textiles, achieving Rext similar to 6 mA W-1 at 488 nm for an operating voltage of 1 V. Thus, our combination of scalable CVD and LPE techniques via inkjet printing is promising for wearable and flexible applications.