Advanced Optical Materials

, volume 10 , issue 10 , pages 2102508

Single Conjugated Polymer with Four Stepwise HOMO Levels for Effective Hole Injection Across Large Barrier 1.4 eV to Core–Shell Quantum Dot Layer for Electroluminescence in Inverted QLED

Shuo En Wu ¹

Sunil Sharma ¹

Hsin Lung Chen ¹

Show-An Chen ¹

Pavel V Komarov ^{2, 3}

Viktor A. Ivanov ^{4, 5}

Alexei R. Khokhlov ^{2, 4}

Hide authors affiliations Show authors affiliations: 5 affiliations

Chemical Engineering Department National Tsing Hua University Hsinchu 30013 Taiwan |

Laboratory of Physical Chemistry of Polymers A.N. Nesmeyanov Institute of Organoelement Compounds RAS Vavilova St. 28 Moscow 119991 Russia |

General Physics Department Tver State University Sadovii per. 35 Tver 170002 Russia |

⁴

Faculty of Physics Moscow State University Leninskie Gory 1 Moscow 119991 Russia |

⁵

Institut für Physik Martin‐Luther‐Universität 06120 Halle Germany |

Publication type: Journal Article

Publication date: 2022-04-05

Wiley

Advanced Optical Materials

scimago Q1

wos Q1

SJR: 1.995

CiteScore: 12.7

Impact factor: 7.2

ISSN: 21951071

DOI: 10.1002/adom.202102508

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Electronic, Optical and Magnetic Materials

Atomic and Molecular Physics, and Optics

Abstract

A novel graded‐HOMO‐level hole transport polymer (g‐HTP) is proposed for the first time with spiro‐polyfluorene (sPF) as the main chain and the three hole‐transporting moieties triphenyl amine (TPA), carbazole (Cz), and N,N′‐dicarbazolyl‐3,5‐benzene (mCP) as side chains for effective hole injection across the large barrier 1.4 eV into the green‐emission core–shell quantum dot (QD) CdSe/ZnS emission layer in inverted QD light‐emitting diode (i‐QLED): ITO/ZnO/QD/HTP/MoO3/Al, in which both oleophilic ligands (OA and TOP) in the QD are partially removed from QD surface by annealing at 270 °C for preventing dissolution by solvent in subsequent coating of hole transport material (HTM) solutions atop and also improving electron and hole mobilities, especially the former. The proposed g‐HTP with various m:n mole ratios of mCP to TPA/Cz moieties along with various reported HTMs (PVK, Poly‐TPD and TFB) are investigated. Among them, the proposed g‐HTP with the comonomer mole ratio 1:1 gives the best performance ηmax 36.1 cd A−1 and Bmax 208 600 cd m−2, which is the highest performance among the reported i‐QLEDs with single hole‐transport layer ever documented. In addition, its efficiency roll off is low from 35.8 cd A−1 at 10 000 cd m−2 to 31.1 cd A−1 at 100 000 cd m−2.

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Wu S. E. et al. Single Conjugated Polymer with Four Stepwise HOMO Levels for Effective Hole Injection Across Large Barrier 1.4 eV to Core–Shell Quantum Dot Layer for Electroluminescence in Inverted QLED // Advanced Optical Materials. 2022. Vol. 10. No. 10. p. 2102508.

GOST all authors (up to 50) Copy

Wu S. E., Sharma S., Chen H. L., Chen S., Komarov P. V., Ivanov V. A., Khokhlov A. R. Single Conjugated Polymer with Four Stepwise HOMO Levels for Effective Hole Injection Across Large Barrier 1.4 eV to Core–Shell Quantum Dot Layer for Electroluminescence in Inverted QLED // Advanced Optical Materials. 2022. Vol. 10. No. 10. p. 2102508.

RIS |

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RIS Copy

TY - JOUR

DO - 10.1002/adom.202102508

UR - https://doi.org/10.1002/adom.202102508

TI - Single Conjugated Polymer with Four Stepwise HOMO Levels for Effective Hole Injection Across Large Barrier 1.4 eV to Core–Shell Quantum Dot Layer for Electroluminescence in Inverted QLED

T2 - Advanced Optical Materials

AU - Wu, Shuo En

AU - Sharma, Sunil

AU - Chen, Hsin Lung

AU - Chen, Show-An

AU - Komarov, Pavel V

AU - Ivanov, Viktor A.

AU - Khokhlov, Alexei R.

PY - 2022

DA - 2022/04/05

PB - Wiley

SP - 2102508

IS - 10

VL - 10

SN - 2195-1071

ER -

BibTex |

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@article{2022_Wu,

author = {Shuo En Wu and Sunil Sharma and Hsin Lung Chen and Show-An Chen and Pavel V Komarov and Viktor A. Ivanov and Alexei R. Khokhlov},

title = {Single Conjugated Polymer with Four Stepwise HOMO Levels for Effective Hole Injection Across Large Barrier 1.4 eV to Core–Shell Quantum Dot Layer for Electroluminescence in Inverted QLED},

journal = {Advanced Optical Materials},

year = {2022},

volume = {10},

publisher = {Wiley},

month = {apr},

url = {https://doi.org/10.1002/adom.202102508},

number = {10},

pages = {2102508},

doi = {10.1002/adom.202102508}

}

MLA

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Wu, Shuo En, et al. “Single Conjugated Polymer with Four Stepwise HOMO Levels for Effective Hole Injection Across Large Barrier 1.4 eV to Core–Shell Quantum Dot Layer for Electroluminescence in Inverted QLED.” Advanced Optical Materials, vol. 10, no. 10, Apr. 2022, p. 2102508. https://doi.org/10.1002/adom.202102508.

Publisher

Wiley

Journal

Advanced Optical Materials

scimago Q1

wos Q1

SJR

1.995

CiteScore

12.7

Impact factor

7.2

ISSN

21951071 (Print, Electronic)

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