journal article·2018-06-08Open access

A One-Dimensional Organic Lead Chloride Hybrid with Excitation-Dependent Broadband Emissions

Guanhong Wu, Chenkun Zhou, Wenmei Ming, Dan Han, Shiyou Chen, Dong Yang, Tiglet Besara, Jennifer Neu, Theo Siegrist, Mao-Hua Du, Biwu Ma, Angang Dong

ACS Energy Letters· Volume 3· Issue 6

Abstract

Organic–inorganic metal halide hybrids have emerged as a new class of materials with fascinating optical and electronic properties. The exceptional structure tunability has enabled the development of materials with various dimensionalities at the molecular level, from three-dimensional (3D) to 2D, 1D, and 0D. Here, we report a new 1D lead chloride hybrid, C4N2H14PbCl4, which exhibits unusual inverse excitation-dependent broadband emission from bluish-green to yellow. Density functional theory calculations were performed to better understand the mechanism of this excitation-dependent broadband emission. This 1D hybrid material is found to have two emission centers, corresponding to the self-trapped excitons (STEs) and vacancy-bound excitons. The excitation-dependent emission is due to different populations of these two types of excitons generated at different excitation wavelengths. This work shows the rich chemistry and physics of organic–inorganic metal halide hybrids and paves the way to achieving novel light emitters with excitation-dependent broadband emissions at room temperature.
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Research context

OpenAlex topics: Perovskite Materials and Applications · Luminescence and Fluorescent Materials · 2D Materials and Applications

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

Affiliations

iChem, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, and Department of Chemistry, Fudan University, Shanghai 200433, China

Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Tallahassee, Florida 32310, United States

Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States

Key Laboratory of Polar Materials and Devices (Ministry of Education), East China Normal University, Shanghai 200241, China

Department of Physics, East China Normal University, Shanghai 200241, China

State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science, Fudan University, Shanghai 200433, China

National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, United States

Materials Science and Engineering Program, Florida State University, Tallahassee, Florida 32306, United States

Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States

Funding

Division of Chemistry · Ministry of Science and Technology of the People's Republic of China · Basic Energy Sciences · Shanghai Municipal Education Commission · Science and Technology Commission of Shanghai Municipality · National Natural Science Foundation of China · Shanghai Education Development Foundation · Division of Materials Research · Computer Center, East China Normal University

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