Alignment of Metal Halide Perovskite Nanowires and Their Application in Photodetectors

Moon Ryul Sihn; Jihoon Choi

doi:10.3740/MRSK.2022.32.6.307

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2022 Vol.32, Issue 6 Preview Page

Alignment of Metal Halide Perovskite Nanowires and Their Application in Photodetectors 금속 할라이드 페로브스카이트 나노와이어의 광 센서 소자 응용

June 2022. pp. 307-312

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Abstract

Metal halide perovskite (MHP) nanocrystals (NCs) have emerged as promising materials for various optoelectronic applications including photovoltaics, light-emitting devices, and photodetectors because of their high absorption coefficient, high diffusion length, and photoluminescence quantum yield. However, understanding the morphological evolution of the MHP NCs as well as their controlled assembly into optoelectronic devices is still challenging and will require further investigation of the colloidal chemistry. In this study, we found that the amount of n-octylamine (the capping agent) plays a crucial role in inducing further growth of the MHP NCs into one-dimensional nanowires during the aging process. In addition, we demonstrate that the dielectrophoresis process can permit self-alignment of the MHP nanowires with uniform distribution and orientation on interdigitated electrodes. A strong light-matter interaction in the MHP NWs array was observed under UV illumination, indicating the photo-induced activation of their luminescence and electrical current in the self-aligned MHP nanowire arrays.

Keywords

CH₃NH₃PbBr₃

perovskite

dielectrophoresis

alignment

nanowire

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Information

Publisher :Materials Research Society of Korea
Publisher(Ko) :한국재료학회
Journal Title :Korean Journal of Materials Research
Journal Title(Ko) :한국재료학회지
Volume : 32
No :6
Pages :307-312
Received Date : 2022-05-13
Revised Date : 2022-05-13
Accepted Date : 2022-06-09
DOI :https://doi.org/10.3740/MRSK.2022.32.6.307

Korean Journal of Materials Research ISSN:1225-0562(Print) 2287-7258(Online) 한국재료학회지

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