journal article·2024-07-02

Monomolecular Membrane-Assisted Growth of Antimony Halide Perovskite/MoS2 Van der Waals Epitaxial Heterojunctions with Long-Lived Interlayer Exciton

Zhicheng Zhou, Juntong Zhu, Lutao Li, Chen Wang, Changwen Zhang, Xinyu Du, Xiangyi Wang, Guoxiang Zhao, Ruonan Wang, Jiating Li, Zheng Lu, Yi Zong, Yinghui Sun, Mark H. Rümmeli, Guifu Zou

ACS Nano· Volume 18· Issue 26
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Abstract

Epitaxial growth stands as a key method for integrating semiconductors into heterostructures, offering a potent avenue to explore the electronic and optoelectronic characteristics of cutting-edge materials, such as transition metal dichalcogenide (TMD) and perovskites. Nevertheless, the layer-by-layer growth atop TMD materials confronts a substantial energy barrier, impeding the adsorption and nucleation of perovskite atoms on the 2D surface. Here, we epitaxially grown an inorganic lead-free perovskite on TMD and formed van der Waals (vdW) heterojunctions. Our work employs a monomolecular membrane-assisted growth strategy that reduces the contact angle and simultaneously diminishing the energy barrier for Cs 3 Sb 2 Br 9 surface nucleation. By controlling the nucleation temperature, we achieved a reduction in the thickness of the Cs 3 Sb 2 Br 9 epitaxial layer from 30 to approximately 4 nm. In the realm of inorganic lead-free perovskite and TMD heterojunctions, we observed long-lived interlayer exciton of 9.9 ns, approximately 36 times longer than the intralayer exciton lifetime, which benefited from the excellent interlayer coupling brought by direct epitaxial growth. Our research introduces a monomolecular membrane-assisted growth strategy that expands the diversity of materials attainable through vdW epitaxial growth, potentially contributing to future applications in optoelectronics involving heterojunctions.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Perovskite Materials and Applications · 2D Materials and Applications · MXene and MAX Phase Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

College of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou 215006, China

Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou 215123, China

Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou Jiangsu 215123, China

Institute for Complex Materials, IFW Dresden, 20 Helmholtz Strasse Dresden 01069, Germany

Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34 Zabrze 41-819, Poland

Institute of Environmental Technology, VSB-Technical University of Ostrava,17. Listopadu 15 Ostrava 70833, Czech Republic

Funding

HORIZON EUROPE Widening participation and spreading excellence · European Regional Development Fund · Ministerstvo ?kolstv?, Ml?de?e a Telov?chovy · Jiangsu Provincial Department of Human Resources and Social Security · Key Lab of Modern Optical Technologies of Education Ministry of China · National Natural Science Foundation of China · Priority Academic Program Development of Jiangsu Higher Education Institutions · Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province · Sino-German Research Institute · Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University

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