Issue 31, 2022

Structural engineering of single-crystal-like perovskite nanocrystals for ultrasensitive photodetector applications

Abstract

Nanostructured organic–inorganic hybrid perovskite materials have attracted much attention due to their excellent performance in optoelectronics and facile solution-processability compared with their bulk and thin-film counterparts. Herein, we successfully synthesized well-defined one-dimensional single-crystalline perovskite nanomaterials for the application of photodetectors (PDs). We controlled synthesis parameters, such as reaction time and mechanical agitations, to deviate crystal structures into quantum dots, nanowires, and nanorods, which are studied comparatively and related to their optoelectrical properties. In particular, we demonstrate that the perovskite nanorods are structured with single-crystal-like molecular orientation, which significantly enhances PD performances compared to nanowires and quantum dots. We constructed PDs using the perovskite nanorods that exhibited excellent photodetection performance with a responsivity of 40 A W−1, external quantum efficiency of 1.3 × 104%, and detectivity of 3.3 × 1014 Jones, respectively, with exceptional device stability over one-month storage.

Graphical abstract: Structural engineering of single-crystal-like perovskite nanocrystals for ultrasensitive photodetector applications

Supplementary files

Article information

Article type
Paper
Submitted
06 May 2022
Accepted
20 Jul 2022
First published
21 Jul 2022

J. Mater. Chem. C, 2022,10, 11401-11411

Structural engineering of single-crystal-like perovskite nanocrystals for ultrasensitive photodetector applications

M. K. Kim, Z. Munkhsaikhan, S. G. Han, S. M. Park, H. Jin, J. Cha, S. J. Yang, J. Seo, H. S. Lee, C. Choi and M. Kim, J. Mater. Chem. C, 2022, 10, 11401 DOI: 10.1039/D2TC01854C

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