Hexa-substituted benzene derivatives as hole transporting materials for efficient perovskite solar cells

Liu, Yuan; Tao, Chen; Xie, Guohua; Velden, J. van der; Marras, Sergio; Luo, Zhenghui; Zhang, Xuan; Petrozza, Annamaria; Yang, Chuluo

doi:10.1016/j.dyepig.2018.12.010

Cited by 11 publications

(7 citation statements)

References 38 publications

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“…Interestingly an increase in hole mobility to 1.65 Â 10 À4 cm 2 V À1 s À1 was obtained for HFB-OMeDPA by light soaking. 115 As discussed in Section 3.4.2, for HTMs containing semilocked tetrathienylethene (TTE) building blocks, the best hole mobility of 6.18 Â 10 À4 cm 2 V À1 s À1 was obtained for TTE-2. Furthermore, a highly efficient, stable device with a PCE of 20.04% was prepared using dopant-free PSCs containing TTE-2, properties that are attributed to its high hole mobility, its low HOMO energy level, and the superior quality of its thin-film.…”

Section: Dopant-free Pscs Built From Polymer Structures Containing Tpamentioning

confidence: 99%

“…Planar PSCs employing these two HTMs exhibited PCEs of 15.9 and 16.7% for HFB-OMeDPA and HPB-OMeDPA, respectively, which are close to the PCE of 16% obtained for the benchmark spiro-OMeTADbased cells, under AM1.5G illumination conditions. 115 Two new propeller-shaped organic HTMs have been realized by attaching six triarylamine groups to a hexaphenylbenzene (HPB) core, HPB-OMe, or a hexakis(2-thienyl)benzene (HTB) core, HTB-OMe (Fig. 26 and 27a).…”

Section: Ev) Different Thicknesses Of Acr-tpa Layersmentioning

confidence: 99%

“…Interestingly an increase in hole mobility to 1.65 × 10 −4 cm 2 V −1 s −1 was obtained for HFB-OMeDPA by light soaking. 115…”

Section: Triphenylamine Derivatives For Dopant-free Pscsmentioning

confidence: 99%

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The evolution of triphenylamine hole transport materials for efficient perovskite solar cells

et al. 2022

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Section: Dopant-free Pscs Built From Polymer Structures Containing Tpamentioning

confidence: 99%

Section: Ev) Different Thicknesses Of Acr-tpa Layersmentioning

confidence: 99%

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The evolution of triphenylamine hole transport materials for efficient perovskite solar cells

et al. 2022

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“…Tao and co-workers 27 reported a fluorene and triphenylamine appended HAB derivatives were utilized as HTM for PSC applications. The structure–electronic property relationship of HTMs was investigated by the research team.…”

Section: Organic Electronic Applications Of Hexaaryl and Pentaarylben...mentioning

confidence: 99%

“…It also contributes to the construction of a 3D network by confining intermolecular aggregation and creating uniform films. 27,28 HABs with suitable electron-withdrawing and/or donating groups alter the HOMO energy level, resulting in the enhancement of electron/hole transport and emission behavior, and thus could be potentially used to establish new types of electronic devices. 29,30 Over the past two decades, there have been immense developments to explore new types of organic semiconductors with favorable photophysical and electronic properties for optoelectronic and electronic devices.…”

Section: Introductionmentioning

confidence: 99%

Hexaarylbenzene based high-performance p-channel molecules for electronic applications

et al. 2021

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Electropolymerized Triphenylamine Network Films for High‐Performance Transparent to Black Electrochromism and Capacitance

Wang

Chen

et al. 2022

Advanced Optical Materials

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can only be called black ECMs. Therefore, in addition to the general electrochromic performance parameters such as contrast ratio, response time, and cyclic stability, for transparent to black ECMs, the satisfactory bleached state is as important as the good black colored state.Conjugated triphenylamine (TPA)based polymers are a kind of potential transparent to black ECMs. [5] TPA cation has strong absorption range of 500-720 nm; [6] N,N,N′,N′-Tetraphenylbenzidine (TPB) is a common bridged structure of polytriphenylamine, its monovalent cation has an absorption in the range of 400-550 and 900-2000 nm, and the absorption of divalent cation is similar to TPA cation covering 550-850 nm range. [7] Both TPA and TPB have no absorption in visible and near-infrared (NIR) regions, hence triphenylamine-based materials may achieve the conversion between transparent and black and NIR electrochromism. [8] Liou and Yen et al. have chemically synthesized a large number of triphenylamine-based materials, [9] including several transparent to black ECMs with outstanding properties. [10] At present, due to the spectral redshift caused by substituents and aggregation, there is still a lack of triphenylamine-based materials with good bleached state, especially low absorption in the range of 400-500 nm.In this work, a precursor, HPB-6TPA, composed entirely of the TPA group was synthesized. Several HPB-6TPA derivatives and substances with similar chemical structures have been reported in the literature, [11] in which electrochemical and spectral properties and potential applications in organic semiconductors have been studied, and the electron transfer and spin states of cationic radicals have been also investigated. The monomer HPB-6TPA was polymerized in situ on an ITO electrode to form a flat polytriphenylamine film by electrodeposition. This film has weak absorption only ranging of 400-425 nm in the visible region; and can realize the conversion of high and low transmittance in the range of 400-2000 nm covering the vis-NIR region, owing to the potential response of TPA and dimeric TPA (TPB) structural units in this TPA network film. The electrochromic performance parameters of this film are impressive. And its specific capacitance is up to 788.9 F g −1 @1.4 A g −1 . In addition, by changing the conditions of EP, films with different contents of electroactive units can be prepared onThe polytriphenylamine films are prepared by electropolymerization from a precursor HPB-6TPA with hexaphenylbenzene (HPB) core bearing six triphenylamine (TPA) units. The abundant and valuable electrochromism from transparent to black and from no to strong near-infrared absorption are achieved from this TPA network film. The presence of residual TPA and dimeric TPA (N,N,N′,N′-tetraphenylbenzidine) units in network film and their independent potential response attain the electrochromic behaviors. The network film possesses short response time and can realize high doping level (72%), attributed to favorable dopant ion channel caused by the twisting struct...

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Hexa-substituted benzene derivatives as hole transporting materials for efficient perovskite solar cells

Cited by 11 publications

References 38 publications

The evolution of triphenylamine hole transport materials for efficient perovskite solar cells

The evolution of triphenylamine hole transport materials for efficient perovskite solar cells

Hexaarylbenzene based high-performance p-channel molecules for electronic applications

Electropolymerized Triphenylamine Network Films for High‐Performance Transparent to Black Electrochromism and Capacitance

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