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Related Experiment Video

Updated: May 8, 2026

Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films

Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films

Published on: September 8, 2017

Mosaic lateral heterostructures in two-dimensional perovskite.

Shuchen Zhang¹, Yuan Lu^2,3, Linghai Zhang⁴

¹State Key Laboratory of Precision and Intelligent Chemistry, Department of Materials Science and Engineering, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, China. zhangshuchen@ustc.edu.cn.

|January 14, 2026

Summary

Researchers developed a new method to create patterned lateral heterostructures in 2D lead halide perovskites. This technique enables the fabrication of complex mosaic structures for advanced light-emitting devices.

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Area of Science:

Materials Science
Solid State Physics
Nanotechnology

Background:

Lateral heterostructures are crucial for advanced electronic devices and fundamental physics research.
Existing methods for creating patterned templates are incompatible with the delicate nature of 2D lead halide perovskites.

Purpose of the Study:

To develop a novel method for fabricating continuous lateral heterostructures in 2D lead halide perovskites.
To enable the creation of complex, mosaic perovskite structures for integrated light-emitting devices.

Main Methods:

Utilizing spontaneous etching within 2D lead halide perovskites to create precisely sized square holes.
Employing a rapid solvent evaporation growth technique for epitaxial growth along etched template edges.
Controlling hole size via etching time and temperature.

Main Results:

Successfully created controllable square holes within 2D lead halide perovskites, enabling large-area lateral heterostructure fabrication.
Demonstrated spontaneous etching along specific crystallographic directions, stabilized by internal strain.
Synthesized diverse mosaic lateral heterostructures capable of emitting various colors.

Conclusions:

The spontaneous etching method provides a gentle yet effective route to pattern 2D lead halide perovskites.
This technique facilitates the creation of complex, integrated emitting devices from diverse perovskite materials.
Offers a versatile platform for exploring perovskite structural properties and developing novel optoelectronic applications.