Theoretical design and simulations of hole transporting materials based on 2,2′,7,7′-tetrakis(N,N-di-p-methoxyphenyl-amine)9,9′-spirobifluorene for organic-inorganic hybrid perovskite solar cells

Zhang, Bing; Xu, Yingxue; Yang, Jieqin; Liao, Yinjie; Tong, Lei; Zhou, Shijie

doi:10.1016/j.comptc.2019.112575

Cited by 4 publications

(2 citation statements)

References 39 publications

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“…The interface between the hole transport layers and the perovskite QD thin films plays an important role in the device performance; in particular, surface passivation is an effective strategy to improve device efficiency. , In order to understand the interfacial interaction and physical phenomenon between X10 and perovskite QD films, defect state density and time-resolved photoluminescence (TRPL) measurements were carried out. The trap density of the interface is evaluated by using the SCLC method with a hole-only device structure of ITO/PEDOT:PSS/HTLs/QDs/TPD/Al.…”

Section: Molecular Design Synthesis and Characterizationmentioning

confidence: 99%

A Multifunctional Small-Molecule Hole-Transporting Material Enables Perovskite QLEDs with EQE Exceeding 20%

Haghshenas

Wang

et al. 2023

ACS Energy Lett.

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Hole-transporting materials (HTMs) play critical roles in the device performance and stability of perovskite quantum dot light-emitting diodes (Pe-QLEDs). However, the development of small-molecule HTMs for achieving highperformance Pe-QLEDs has proven to be very challenging because of their low hole mobility and poor solvent resistance. Herein, we tailor-made a multifunctional small-molecule HTM, termed X10, with methoxy as the substituents, for application in Pe-QLEDs. X10 features high hole mobility, good film-forming ability, and strong solvent resistance ability as well as defect passivation effect. Subsequently, Pe-QLEDs employing X10 as HTM presented a promising external quantum efficiency (EQE) of 20.18%, which is 7-fold higher than that of the reference HTM-TCTA-based ones (EQE ≈ 2.88%). To the best of our knowledge, this is the first case in which a small-molecule HTM displays a high EQE over 20% in Pe-QLEDs. Our work provides important guidance for the rational design of multifunctional small-molecule HTMs for high-performance Pe-QLEDs.

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Section: Molecular Design Synthesis and Characterizationmentioning

confidence: 99%

A Multifunctional Small-Molecule Hole-Transporting Material Enables Perovskite QLEDs with EQE Exceeding 20%

Haghshenas

Wang

et al. 2023

ACS Energy Lett.

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“…[2,4,5] Thanks to the combination of these notable properties, spiro-configured organic functional materials, mostly derived from 9,9'-spirobifluorene, have found potential use in several optoelectronic and electronic applications, including electrochemiluminescence, [3] organic light-emitting devices (OLEDs), [6] field-effect transistors, [7] lasers, [8] and solar cells. [9][10][11] However, spiro compounds based on heteroaromatics are increasingly investigated in optoelectronic devices, especially as p-organic semiconductors with improved charge injecting and transporting properties. [12][13][14][15] This is well exemplified by the recent introduction of 4,4'-spirobi[cyclopenta[2,1-b : 3,4-b']dithiophene] (SCPDT) and spiro-linked fluorene-cyclopenta[2,1b : 3,4-b']dithiophene (FDT) derivatives as molecular hole transport materials (HTM) in perovskite solar cells.…”

Section: Introductionmentioning

confidence: 99%

Electron Donor‐Acceptor Spirobi[cyclopenta[2,1‐b : 3,4‐b′]dithiophene] Derivatives as Precursors of Electrodeposited Regioregular Thiophene‐based Polymers

Minudri

Orlandi²,

Cavazzini³

et al. 2020

Eur J Org Chem

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Dedicated to Professor Franco Cozzi on the occasion of his 70th birthday. A series of conjugation extended push-pull derivatives of 4,4'spirobi[cyclopenta[2,1-b : 3,4-b']dithiophene] were synthesized and fully characterized, in which each perpendicularly aligned cyclopenta[2,1-b : 3,4-b']dithiophene features a pendant dicyanovinylene as an electron acceptor and a thiophene as an electron donor. The electrochemical and photophysical properties of the new molecules, which differ from each other for the presence and/or location of an additional n-hexyl chain on the pendant thiophene unit, were investigated, as well as their susceptibility to electrochemical polymerization. The substitution arrangement of the monomers was found to exert significant influence on the outcome of the electropolymerization process and on the optoelectronic properties and morphological film characteristics of the new regioregular materials obtained.

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Recent progress in 1,4-diazafluorene-cored optoelectronic materials: A review

et al. 2021

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Theoretical design and simulations of hole transporting materials based on 2,2′,7,7′-tetrakis(N,N-di-p-methoxyphenyl-amine)9,9′-spirobifluorene for organic-inorganic hybrid perovskite solar cells

Cited by 4 publications

References 39 publications

A Multifunctional Small-Molecule Hole-Transporting Material Enables Perovskite QLEDs with EQE Exceeding 20%

A Multifunctional Small-Molecule Hole-Transporting Material Enables Perovskite QLEDs with EQE Exceeding 20%

Electron Donor‐Acceptor Spirobi[cyclopenta[2,1‐b : 3,4‐b′]dithiophene] Derivatives as Precursors of Electrodeposited Regioregular Thiophene‐based Polymers

Recent progress in 1,4-diazafluorene-cored optoelectronic materials: A review

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