journal article·2019-07-12Open access

Green Emitting Single-Crystalline Bulk Assembly of Metal Halide Clusters with Near-Unity Photoluminescence Quantum Efficiency

Chenkun Zhou, Haoran Lin, Jennifer Neu, Yan Zhou, Maya Chaaban, Sujin Lee, Michael Worku, Banghao Chen, Ronald Clark, Wenhao Cheng, Jingjiao Guan, Peter Djurovich, Dongzhou Zhang, Xujie Lü, James Bullock, Chongin Pak, Michael Shatruk, Mao-Hua Du, Theo Siegrist, Biwu Ma

ACS Energy Letters· Volume 4· Issue 7

Abstract

Organic metal halide hybrids with zero-dimensional (0D) structure at the molecular level, or single-crystalline bulk assemblies of metal halides, are an emerging class of light-emitting materials with high photoluminescence quantum efficiencies (PLQEs) and color tunability. Here we report the synthesis and characterization of a new single-crystalline bulk assembly of metal halide clusters, (bmpy)9[ZnCl4]2[Pb3Cl11] (bmpy: 1-butyl-1-methylpyrrolidinium), which exhibits green emission peaked at 512 nm with a remarkable near-unity PLQE at room temperature. Detailed structural and photophysical studies suggest that there are two emitting states in [Pb3Cl11]5– clusters, whose populations are strongly dependent on the surrounding molecular environment that controls the excited-state structural distortion of [Pb3Cl11]5– clusters. High chemical- and photostability have also been demonstrated in this new material.
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Research context

OpenAlex topics: Perovskite Materials and Applications · 2D Materials and Applications · Quantum Dots Synthesis And Properties

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

Affiliations

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

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

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, University of Southern California, Los Angeles, California 90089, United States

Partnership for Extreme Crystallography, University of Hawaii at Manoa, Honolulu, Hawaii 96822, United States

Center for High Pressure Science and Technology Advanced Research (HPSTAR), Shanghai 201203, China

Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States

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

Funding

Division of Chemistry · Air Force Office of Scientific Research · Division of Materials Research · State of Florida

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