Beisenbayev Almaz R, Sadirkhanov Zhandos T, Yerlanuly Yerassyl, Kaikanov Marat I, Jumabekov Askhat N
Department of Chemical Engineering, Nazarbayev University, Nur-Sultan 010000, Kazakhstan.
Department of Physics, Nazarbayev University, Nur-Sultan 010000, Kazakhstan.
Nanomaterials (Basel). 2022 Mar 22;12(7):1034. doi: 10.3390/nano12071034.
Metal-semiconductor-metal (MSM) configuration of perovskite photodetectors (PPDs) suggests easy and low-cost manufacturing. However, the basic structures of MSM PPDs include vertical and lateral configurations, which require the use of expensive materials such as transparent conductive oxides or/and sophisticated fabrication techniques such as lithography. Integrating metallic nanowire-based electrodes into the perovskite photo-absorber layer to form one-half of the MSM PPD structure could potentially resolve the key issues of both configurations. Here, a manufacturing of solution-processed and self-powered MSM PPDs with embedded silver nanowire electrodes is demonstrated. The embedding of silver nanowire electrode into the perovskite layer is achieved by treating the silver nanowire/perovskite double layer with a methylamine gas vapor. The evaporated gold layer is used as the second electrode to form MSM PPDs. The prepared MSM PPDs show a photoresponsivity of 4 × 10 AW in the UV region and 2 × 10 AW in the visible region. On average, the devices exhibit a photocurrent of 1.1 × 10 A under white light (75 mW cm) illumination with an ON/OFF ratio of 83.4. The results presented in this work open up a new method for development and fabrication of simple, solution-processable MSM self-powered PPDs.
钙钛矿光电探测器（PPD）的金属-半导体-金属（MSM）结构意味着易于制造且成本低廉。然而，MSM PPD的基本结构包括垂直和横向配置，这需要使用昂贵的材料，如透明导电氧化物，或/和复杂的制造技术，如光刻。将基于金属纳米线的电极集成到钙钛矿光吸收层中，以形成MSM PPD结构的一半，可能会解决这两种配置的关键问题。在此，展示了一种具有嵌入式银纳米线电极的溶液处理和自供电MSM PPD的制造方法。通过用甲胺气体蒸汽处理银纳米线/钙钛矿双层，将银纳米线电极嵌入钙钛矿层中。蒸发的金层用作第二电极以形成MSM PPD。制备的MSM PPD在紫外区域的光响应度为4×10 AW，在可见光区域为2×10 AW。平均而言，这些器件在白光（75 mW cm）照射下的光电流为1.1×10 A，开/关比为83.4。这项工作中呈现的结果为开发和制造简单的、可溶液处理的MSM自供电PPD开辟了一种新方法。
