Piperidine and Pyridine Series Lead-Free Dion–Jacobson Phase Tin Perovskite Single Crystals and Their Applications for Field-Effect Transistors
Journal
ACS Nano
Journal Volume
18
Journal Issue
22
Start Page
14176
End Page
14186
ISSN
1936-0851
1936-086X
Date Issued
2024-06-04
Author(s)
Chwenhaw Liao
Stefano Bernardi
Christopher G. Bailey
I. Hsiang Chao
Su-Ying Chien
Guoliang Wang
Yi-Hsuan Sun
Shi Tang
Jianghui Zheng
Jianpeng Yi
Ming-Hsuan Yu
Salvy P. Russo
Dane R. McCamey
Brendan James Kennedy
Asaph Widmer-Cooper
Anita W. Y. Ho-Baillie
DOI
10.1021/acsnano.3c11125
Abstract
Two-dimensional (2D) organic-inorganic metal halide perovskites have gained immense attention as alternatives to three-dimensional (3D) perovskites in recent years. The hydrophobic spacers in the layered structure of 2D perovskites make them more moisture-resistant than 3D perovskites. Moreover, they exhibit unique anisotropic electrical transport properties due to a structural confinement effect. In this study, four lead-free Dion-Jacobson (DJ) Sn-based phase perovskite single crystals, 3AMPSnI4, 4AMPSnI4, 3AMPYSnI4, and 4AMPYSnI4 [AMP = (aminomethyl)-piperidinium, AMPY = (aminomethyl)pyridinium] are reported. Results reveal structural differences between them impacting the resulting optical properties. Namely, higher octahedron distortion results in a higher absorption edge. Density functional theory (DFT) is also performed to determine the trends in energy band diagrams, exciton binding energies, and formation energies due to structural differences among the four single crystals. Finally, a field-effect transistor (FET) based on 4AMPSnI4 is demonstrated with a respectable hole mobility of 0.57 cm2 V-1 s-1 requiring a low threshold voltage of only −2.5 V at a drain voltage of −40 V. To the best of our knowledge, this is the third DJ-phase perovskite FET reported to date.
Subjects
DFT calculation
Dion-Jacobson phase
field-effect transistor
low exciton binding energy
single crystal
tin perovskite
Publisher
American Chemical Society (ACS)
Type
journal article