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A Lead-free Semiconducting Hybrid with Ultra-high Color Rendering Index White Light-emission

Abstract

Organic-inorganic hybrid perovskites (OIHPs) of lead halides have played a significant role in the field of light-emitting devices and display systems. However, the potential toxicity of lead is considered as one of the main problems for their further application; it is highly-desirable to design the new lead-free OIHPs with outstanding white light emission. Herein, we present a new lead-free single-component hybrid as the potential white light-emitting semiconducting material, [4-methylpiperidinium]2SbCl5 (4-MPSC), which adopts the one-dimensional inorganic chains of corner-sharing SbCl6 octahedra. It is noteworthy that 4-MPSC shows a commission internationale de l’eclairage (CIE) chromaticity coordinates of (0.33, 0.32), which is highly close to the pure white light emission value of (0.33, 0.33). Meanwhile, the white-light emission of 4-MPSC shows an ultra-high color rendering index (CRI) value of 96.29. It is believed that such an ultra-high CRI value will fulfil the requirement for color-critical high-level potential applications. Moreover, 4-MPSC also exhibits semiconducting properties, as verified by the positive temperature-dependent conductivity along with the optical bandgap of 2.93 eV. This work will provide a pathway for the further design of new white-light-emitting materials in the lead-free OIHPs system.

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Publication details

The article was received on 24 Nov 2017, accepted on 31 Jan 2018 and first published on 31 Jan 2018


Article type: Paper
DOI: 10.1039/C7TC05384C
Citation: J. Mater. Chem. C, 2018, Accepted Manuscript
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    A Lead-free Semiconducting Hybrid with Ultra-high Color Rendering Index White Light-emission

    A. Khan, A. Zeb, L. li, W. Zhang, Z. sun, Y. Wang and J. Luo, J. Mater. Chem. C, 2018, Accepted Manuscript , DOI: 10.1039/C7TC05384C

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