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Title: Turn‐on Circularly Polarized Luminescence in Chiral Indium Chlorides by 5s 2 Metal Centers

Journal Article · · Angewandte Chemie
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  1. Department of Chemistry and Energy Institute The Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong (SAR) China
  2. Department of Physics and Astronomy and Wright Center for Photovoltaics Innovation and Commercialization University of Toledo Toledo, OH USA
  3. Department of Chemistry Southern University of Science and Technology Shenzhen Guangdong 518055 China

Abstract Introducing chirality into the metal‐halide hybrids has enabled many emerging properties including chiroptical activity, spin‐dependent transport, and ferroelectricity. However, most of the chiral metal‐halide hybrids to date are non‐emissive, and the underlying mechanism remains elusive. Here, we show a new strategy to turn on the circularly polarized luminescence (CPL) in chiral metal‐halide hybrids. We demonstrate that alloying Sb 3+ into chiral indium‐chloride hybrids dramatically increases the photoluminescence quantum yield in two new series of chiral indium‐antimony chlorides. These materials exhibit strong CPL signals with tunable energy and a high dissymmetry factor up to 1.5×10 −2 . Mechanistic studies reveal that the emission originates from the self‐trapped excitons centered in 5s 2 Sb 3+ . Moreover, near‐ultraviolet pumped white light is demonstrated with a polarization up to 6.0 %. Our work demonstrates new strategies towards highly luminescent chiral metal‐halide hybrids.

Sponsoring Organization:
USDOE
OSTI ID:
1983523
Journal Information:
Angewandte Chemie, Journal Name: Angewandte Chemie Vol. 135 Journal Issue: 17; ISSN 0044-8249
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English

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