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Study of the stability of lead halide perovskite under two different fluoropolymer top coatings

Published online by Cambridge University Press:  10 February 2020

Fatemeh Khorramshahi  and
Arash Takshi
Fatemeh Khorramshahi*
Affiliation:
University of South Florida, Tampa, USA
Arash Takshi
Affiliation:
University of South Florida, Tampa, USA
*
*(Email: [email protected])
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Abstract

In this work, lead halide perovskite photodetectors were fabricated by a laser-assisted rapid fabrication method. A microchannel was engraved on an indium tin oxide (ITO) coated polyethylene terephthalate (PET) conductive flexible substrate using a CO2 laser source. The channels were filled by methylammonium lead halide perovskite (CH3NH3PbI3) using the capillary motion of perovskite first-step method precursor. CYTOP and the low-cost commercially available FluroPel were used as a top protective coating layer to suppress the decomposition of the perovskite channel. X-ray diffraction pattern (XRD) was used to measure the stability of the perovskite. Strong humidity resistant and self-healing behavior were observed in both devices. The performance of the photodetectors was compared by measuring electrical and optical characteristics over time. This study will help in the low-cost fabrication of perovskite-based devices.

Keywords

perovskitesphotovoltaiclaser ablation
Type
Articles
Information
MRS Advances , Volume 5 , Issue 8-9: Energy and Environment , 2020 , pp. 377 - 383
Copyright
Copyright © Materials Research Society 2020

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