Green Emitting Single-Crystalline Bulk Assembly of Metal Halide Clusters with Near-Unity Photoluminescence Quantum Efficiency
- FAMU-FSU College of Engineering, Tallahassee, FL (United States)
- Florida State Univ., Tallahassee, FL (United States)
- Univ. of Southern California, Los Angeles, CA (United States)
- Univ. of Hawaii at Manoa, Honolulu, HI (United States)
- Center for High Pressure Science and Technology Advanced Research (HPSTAR), Shanghai (China)
- Univ. of Florida, Gainesville, FL (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- FAMU-FSU College of Engineering, Tallahassee, FL (United States); Florida State Univ., Tallahassee, FL (United States)
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. Furthermore, high chemical- and photostability have also been demonstrated in this new material.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1531243
- Journal Information:
- ACS Energy Letters, Vol. 4, Issue N/A; ISSN 2380-8195
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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