journal article·2021

Thickness dependent properties of ultrathin perovskite nanosheets with Ruddlesden–Popper-like atomic stackings

Jingxian Zhong, Yan Sun, Bowen Liu, Chao Zhu, Yang Cao, Encheng Sun, Kaiyue He, Wei Zhang, Kan Liao, Xiaoyong Wang, Zheng Liu, Lin Wang

Nanoscale· Volume 13· Issue 45
Publisher page

Abstract

Ruddlesden-Popper perovskites possess a rich variety of multiple phases due to their mixed organic cations and variable layer numbers. However, the direct observation of these phases and their optical performance in ultrathin nanosheets, have rarely been reported. Here we demonstrate, through a one-pot CVD synthesis method to incorporate MA+ and NMA+ cations into PbI2 simultaneously, that the stackings of Ruddlesden-Popper phases with a distribution of a number of layers 〈n〉 can be produced within a single perovskite nanosheet. As featured by the micro-, time-resolved and temperature-dependent photoluminescence measurements, the optical properties are highly dependent on the nanosheet thickness.
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Research context

OpenAlex topics: Perovskite Materials and Applications · Quantum Dots Synthesis And Properties · Chalcogenide Semiconductor Thin Films

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

Affiliations

Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University Nanjing, 211816, China

Frontiers Science Centre for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, Xi'an 710072, China

State Key Laboratory of Transducer Technology, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai, 200083, China

School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore

National Laboratory of Solid State Microstructures, School of Physics and Collaborative Innovation Centre of Advanced Microstructures, Nanjing University, Nanjing 210093, China

Funding

National Key Research and Development Program of China · National Natural Science Foundation of China · Natural Science Foundation of Jiangsu Province · China Postdoctoral Science Foundation · Fundamental Research Funds for the Central Universities · Shanxi Provincial Key Research and Development Project · Northwestern Polytechnical University · Nanjing Tech University

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