Highly Efficient Broad-Band Luminescence Involving Organic and Inorganic Molecules in a Zero-Dimensional Hybrid Lead Chloride

Yangui, Aymen; Roccanova, Rachel; Wu, Yuntao; Du, Mao-Hua; Saparov, Bayrammurad

doi:10.1021/acs.jpcc.9b05509

Title: Highly Efficient Broad-Band Luminescence Involving Organic and Inorganic Molecules in a Zero-Dimensional Hybrid Lead Chloride

Journal Article · Tue Aug 13 00:00:00 EDT 2019 · Journal of Physical Chemistry. C

DOI:https://doi.org/10.1021/acs.jpcc.9b05509· OSTI ID:1566979

Yangui, Aymen ^[1]; Roccanova, Rachel ^[1]; Wu, Yuntao ^[2];

^[3]; Saparov, Bayrammurad ^[1]

Univ. of Oklahoma, Norman, OK (United States)
Univ. of Tennessee, Knoxville, TN (United States). Scintillation Materials Research Center
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

The photophysical mechanism of ultrabright visible light emission in the zero-dimensional (0D) hybrid organic–inorganic material (HOIM), (DETA)PbCl₅·H₂O (DETA = diethylenetriammonium), has been studied. This compound exhibits efficient room-temperature bluish white-light (WL) emission, corroborated by a high photoluminescence quantum yield (PLQY) value of 36.8 % and a Commission Internationale de l’Eclairage (CIE) color coordinates of (0.18, 0.17). Optical investigations reveal that broad-band emission containing multiple emission centers originates from both the fluorescence of the organic molecules DETA and self-trapped excitons within the [Pb₂Cl₁₀]^6– inorganic bioctahedral dimers. Furthermore, an enhanced PLQY of up to 40.3% with an adjusted pure WL emission (CIE of (0.33, 0.34)) and a remarkable color rendering index of 90 was achieved through the incorporation of Mn²⁺ within (DETA)PbCl₅·H₂O. Our findings aid in understanding the photophysical properties of 0D HOIMs and preparation of new families of highly emissive materials for solid-state lighting applications.

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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:: 1566979

Journal Information:: Journal of Physical Chemistry. C, Vol. 123, Issue 36; ISSN 1932-7447

Publisher:: American Chemical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 42 works

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