Record efficiency of 1000 nm electroluminescence from a solution-processable host-free OLED

Anton Kovalenko; Lyubov O. Tcelykh; Daniil Koshelev; Andrey A. Vashchenko; Dmitry M. Tsymbarenko; Alexander S. Goloveshkin; Aleksey Aleksandrov; Anatolii Burlov; Valentina V. Utochnikova

doi:10.1039/d1dt04033b

Record efficiency of 1000 nm electroluminescence from a solution-processable host-free OLED

Anton Kovalenko
, Lyubov O. Tcelykh
, Daniil Koshelev
, Andrey A. Vashchenko
, Dmitry M. Tsymbarenko
, Alexander S. Goloveshkin
, Aleksey Aleksandrov
, Anatolii Burlov
, Valentina V. Utochnikova

Moscow State University
P.N. Lebedev Physical Institute of the Russian Academy of Sciences
Russian Academy of Sciences
Russian Academy of Sciences
Southern Federal University

Research output: Contribution to journal › Article › peer-review

Abstract

New ytterbium complexes K(Solv)_x[Yb(Lⁿ)₂] (Solv = ethanol and/or water) with 2-tosylaminobenzylidene-aryloylhydrazones (H₂L¹, aryloyl = benzoyl; H₂L², aryloyl = 2-naphthoyl) demonstrated high solubility and hole mobility (ca. 2.6 × 10⁻⁶ cm² V⁻¹ s⁻¹), while their electron mobility and PLQY were different. The substitution of a benzoyl substituent with naphthoyl resulted in a significant increase of the electron mobility (6.9 × 10⁻⁷vs. 1.7 × 10⁻⁶ cm² V⁻¹ s⁻¹) and a decrease of the quantum yield (1.2% vs. 0.6%). As a result, the optimized OLEDs based on the K[Yb(Lⁿ)₂] layer demonstrated efficiencies up to 385 μW W⁻¹ and 441 μW W⁻¹, indicating the superior importance of charge mobility over the quantum yield. These are the highest efficiencies of the Yb electroluminescence.

Original language	English
Pages (from-to)	3833-3838
Number of pages	6
Journal	Dalton Transactions
Volume	51
Issue number	10
DOIs	https://doi.org/10.1039/d1dt04033b
Publication status	Published - 7 Feb 2022
Externally published	Yes

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@article{a7c8933d5ec343db9295423336ac31e3,

title = "Record efficiency of 1000 nm electroluminescence from a solution-processable host-free OLED",

abstract = "New ytterbium complexes K(Solv)x[Yb(Ln)2] (Solv = ethanol and/or water) with 2-tosylaminobenzylidene-aryloylhydrazones (H2L1, aryloyl = benzoyl; H2L2, aryloyl = 2-naphthoyl) demonstrated high solubility and hole mobility (ca. 2.6 × 10−6 cm2 V−1 s−1), while their electron mobility and PLQY were different. The substitution of a benzoyl substituent with naphthoyl resulted in a significant increase of the electron mobility (6.9 × 10−7vs. 1.7 × 10−6 cm2 V−1 s−1) and a decrease of the quantum yield (1.2\% vs. 0.6\%). As a result, the optimized OLEDs based on the K[Yb(Ln)2] layer demonstrated efficiencies up to 385 μW W−1 and 441 μW W−1, indicating the superior importance of charge mobility over the quantum yield. These are the highest efficiencies of the Yb electroluminescence.",

author = "Anton Kovalenko and Tcelykh, \{Lyubov O.\} and Daniil Koshelev and Vashchenko, \{Andrey A.\} and Tsymbarenko, \{Dmitry M.\} and Goloveshkin, \{Alexander S.\} and Aleksey Aleksandrov and Anatolii Burlov and Utochnikova, \{Valentina V.\}",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry",

year = "2022",

month = feb,

day = "7",

doi = "10.1039/d1dt04033b",

language = "English",

volume = "51",

pages = "3833--3838",

journal = "Dalton Transactions",

issn = "1477-9226",

number = "10",

}

TY - JOUR

T1 - Record efficiency of 1000 nm electroluminescence from a solution-processable host-free OLED

AU - Kovalenko, Anton

AU - Tcelykh, Lyubov O.

AU - Koshelev, Daniil

AU - Vashchenko, Andrey A.

AU - Tsymbarenko, Dmitry M.

AU - Goloveshkin, Alexander S.

AU - Aleksandrov, Aleksey

AU - Burlov, Anatolii

AU - Utochnikova, Valentina V.

PY - 2022/2/7

Y1 - 2022/2/7

N2 - New ytterbium complexes K(Solv)x[Yb(Ln)2] (Solv = ethanol and/or water) with 2-tosylaminobenzylidene-aryloylhydrazones (H2L1, aryloyl = benzoyl; H2L2, aryloyl = 2-naphthoyl) demonstrated high solubility and hole mobility (ca. 2.6 × 10−6 cm2 V−1 s−1), while their electron mobility and PLQY were different. The substitution of a benzoyl substituent with naphthoyl resulted in a significant increase of the electron mobility (6.9 × 10−7vs. 1.7 × 10−6 cm2 V−1 s−1) and a decrease of the quantum yield (1.2% vs. 0.6%). As a result, the optimized OLEDs based on the K[Yb(Ln)2] layer demonstrated efficiencies up to 385 μW W−1 and 441 μW W−1, indicating the superior importance of charge mobility over the quantum yield. These are the highest efficiencies of the Yb electroluminescence.

AB - New ytterbium complexes K(Solv)x[Yb(Ln)2] (Solv = ethanol and/or water) with 2-tosylaminobenzylidene-aryloylhydrazones (H2L1, aryloyl = benzoyl; H2L2, aryloyl = 2-naphthoyl) demonstrated high solubility and hole mobility (ca. 2.6 × 10−6 cm2 V−1 s−1), while their electron mobility and PLQY were different. The substitution of a benzoyl substituent with naphthoyl resulted in a significant increase of the electron mobility (6.9 × 10−7vs. 1.7 × 10−6 cm2 V−1 s−1) and a decrease of the quantum yield (1.2% vs. 0.6%). As a result, the optimized OLEDs based on the K[Yb(Ln)2] layer demonstrated efficiencies up to 385 μW W−1 and 441 μW W−1, indicating the superior importance of charge mobility over the quantum yield. These are the highest efficiencies of the Yb electroluminescence.

UR - https://www.scopus.com/pages/publications/85125965867

U2 - 10.1039/d1dt04033b

DO - 10.1039/d1dt04033b

M3 - Article

C2 - 35195116

AN - SCOPUS:85125965867

SN - 1477-9226

VL - 51

SP - 3833

EP - 3838

JO - Dalton Transactions

JF - Dalton Transactions

IS - 10

ER -

Record efficiency of 1000 nm electroluminescence from a solution-processable host-free OLED

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