SELF-POWERED ORGANOMETAL HALIDE PEROVSKITE PHOTODETECTOR WITH EMBEDDED SILVER NANOWIRES
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Date
2022
Authors
Beisenbayev, Almaz R.
Sadirkhanov, Zhandos T.
Yerlanuly, Yerassyl
Kaikanov, Marat I.
Jumabekov, Askhat N.
Journal Title
Journal ISSN
Volume Title
Publisher
Nanomaterials
Abstract
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 4 105 AW1 in the UV region and 2 105 AW1 in the visible region.
On average, the devices exhibit a photocurrent of 1.1 106 A under white light (75 mW cm2)
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.
Description
Keywords
Type of access: Open Access, perovskite, silver nanowires, photodetector, network, methylamine