Insight into the positional effect of bulky rigid substituents in organic sensitizers on the performance of dye-sensitized solar cells

Miu, Lihai; Yan, Suhao; Yao, Huiyun; Chen, Qiang; Zhang, Ji; Wang, Zhihui; Cai, Peng; Hu, Tao; Ding, Shangwu; Chen, Jing; Liang, Mao; Yang, Shihe

doi:10.1016/j.dyepig.2019.04.048

Cited by 13 publications

(10 citation statements)

References 44 publications

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“…175 Recent research indicates that the presence of the truxene core significantly impacts the light-harvesting properties of materials. 15 Alternatively, an acceptor unit, such as fullerene, 176 attached to truxene, increases its electron conductivity. Current photovoltaic electron-deficient systems do not contain fullerene molecules.…”

Section: Truxenes: Physicochemical Properties and Applicationsmentioning

confidence: 99%

“…[1][2][3][4][5] The typical features of truxenes is their significant thermal and photostability. Truxenes and their heteroanalogues can be utilized in OLEDs, [6][7][8][9] OFETs, [10][11][12] DSSCs, [13][14][15] NLO, [16][17][18][19] sensors, 20,21 gases and small molecule storage [22][23][24] materials, and many more. The enormous diversity of truxenes is due to the unprecedented possibilities for their functionalization.…”

Section: Introductionmentioning

confidence: 99%

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From truxenes to heterotruxenes: playing with heteroatoms and the symmetry of molecules

2022

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Section: Truxenes: Physicochemical Properties and Applicationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

From truxenes to heterotruxenes: playing with heteroatoms and the symmetry of molecules

2022

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“…Importantly, this strategy has shown widespread applicability regardless of the dye π‐bridge structure with thiophene and thiophene derivative‐based dyes ( W10 , JK‐314 , MA45 , LP227 , AH7 , TK6 , XW70 , QX02 , SGT‐103 , AP16 ), quinoxaline‐derived dyes ( YA422 , S3 , DT‐1 , FNE53 ), benzothiadiazole‐based dyes ( RR9 , C275 , C281 , ZL003 ), diketopyrrolopyrrole‐based dyes ( DPP17 ), and porphyrin‐based dyes ( XW51 , SGT‐021 , 2,4‐ZnP‐CN‐COOH ), which are all used to generate relatively low‐recombination‐rate systems (Figure ). The most common approach used is the incorporation of aryl alkyl ether groups where the aryl is benzene (16 examples in Figure ).…”

Section: Next‐generation Low‐recombination Donorsmentioning

confidence: 99%

The Hagfeldt Donor and Use of Next‐Generation Bulky Donor Designs in Dye‐Sensitized Solar Cells

2020

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“The Hagfeldt donor” is a bulky triarylamine building block with four alkyl chains in a 3‐dimensional arrangement that is used with organic dyes in dye‐sensitized solar cells (DSCs) in over 140 publications. Many of the highest performing DSC devices in literature make use of this group due to exceptional TiO2 surface protection properties, which slows recombination of electrons in TiO2 with the electrolyte. Importantly, record‐setting cobalt and copper redox shuttle‐based DSCs require exceptional surface protection to slow a facile recombination of electrons to these positively charged redox shuttles. Several syntheses have emerged for the Hagfeldt donor due to the need for iterative aryl–halide cross‐ coupling reactions complicating a straightforward route. Six synthetic strategies found in literature are described along with the challenges of each route. A recent method that has been put forward in the literature as a scalable, regioisomerically pure route is highlighted.

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“…25,26 Depending upon unique electrochemical and photophysical properties, organic sensitizers are widely employed in PVs. [27][28][29] The diversity of organic sensitizers is groomed by different types of functional groups present like cyanide ( CN), carboxylic acid ( COOH), and azo N N groups, and so on. 30 Purposely, a novel organic sensitizer K-Azo is developed in this research by incorporation of kojic acid (5-hydroxy-2-[hydroxymethyl]-4H-pyran-4-one) and azo sensitizer.…”

Section: Introductionmentioning

confidence: 99%

“…Sensitizers in PV applications have achieved tremendous attention in recent years 25,26 . Depending upon unique electrochemical and photophysical properties, organic sensitizers are widely employed in PVs 27‐29 . The diversity of organic sensitizers is groomed by different types of functional groups present like cyanide (CN), carboxylic acid (COOH), and azo NN groups, and so on 30 …”

Section: Introductionmentioning

confidence: 99%

Organic sensitization of graphene oxide and reduced graphene oxide thin films for photovoltaic applications

et al. 2021

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In this work, a new organic compound (K-Azo) was introduced to enhance the electrical and optical performance of graphene oxide (GO) and reduced GO (rGO) nanostructured films. The improved and modified chemical vapour method was employed for the synthesis of GO and rGO. The photophysical characterization of thin films was performed by applying analytical techniques including X-ray diffraction, Fourier-transform infrared spectroscopy, scanning electron microscopy, ultraviolet-visible, and Raman spectroscopy. The electrical properties (I-V characteristic) of GO and rGO thin films displayed higher conductivity which was 4.07 × 10 −7 and 1.10 × 10 −3 S/cm, respectively in the presence of organic sensitizer. However, GO and rGO thin films showed 9.91 × 10 −7 and 6.17 × 10 −4 S/cm, respectively in the absence of K-Azo sensitizer.Optical and electrical investigations indicated that the characteristics of GO and rGO were improved due to the presence of organic sensitizer. The longrange π-electron delocalization in organic sensitizer contributed to higher conductivity for potential photovoltaic solar cell applications.

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Insight into the positional effect of bulky rigid substituents in organic sensitizers on the performance of dye-sensitized solar cells

Cited by 13 publications

References 44 publications

From truxenes to heterotruxenes: playing with heteroatoms and the symmetry of molecules

From truxenes to heterotruxenes: playing with heteroatoms and the symmetry of molecules

The Hagfeldt Donor and Use of Next‐Generation Bulky Donor Designs in Dye‐Sensitized Solar Cells

Organic sensitization of graphene oxide and reduced graphene oxide thin films for photovoltaic applications

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