251566-01-5Relevant articles and documents
The impact of adjusting auxiliary donors on the performance of dye-sensitized solar cells based on phenothiazine D-D-π-A sensitizers
Chen, Shu-Guang,Jia, Hai-Lang,Ju, Xue-Hai,Zheng, He-Gen
, p. 127 - 135 (2017)
Three new D-D-π-A sensitizers ZHG5, ZHG6 and ZHG7 have been prepared by gradually improving the steric hindrance of auxiliary donors and the power conversion efficiencies (PCE) are 5.64%, 5.32% and 2.74%. UV–Vis absorption indicates that the molar extinction coefficients decrease with the increased steric hindrance of auxiliary donors. X-ray photoelectron spectroscopy (XPS) indicates that the tilt angles of ZHG5 and ZHG6 anchored on the TiO2 film are similar and ZHG7 is almost standing rather vertical on the TiO2 film with the smallest tilt angle. The results of dye desorption and XPS experiments indicate that the dye loading amount of ZHG6 with larger steric hindrance is lower than that of ZHG5, ZHG7 with largest auxiliary donor has the maximum loading amount probably due to its smallest tilt angle. Larger auxiliary donor of ZHG6 leads to higher open circuit voltage (Voc = 734 mV) but lower shorter circuit current (Jsc = 12.63 mA cm?2) compared with that of ZHG5 (Voc = 730 mV, Jsc = 12.06 mA cm?2). However, dense packing of dye ZHG7 anchored on the TiO2 leads to more serious intermolecular π-π aggregation effects. Perhaps this effect and lowest molar extinction coefficient are the reason that DSSC based on ZHG7 have the lowest PCE. So above results indicate that auxiliary donor with overlarge steric hindrance will have smaller tilt angle of dye anchored on TiO2 and may lead to more dye loading amount but serious intermolecular π-π aggregation effects.
Synthesis and Application of Perylene-Embedded Benzoazoles for Small-Molecule Organic Solar Cells
Chen, Zhicai,Li, Jing,Li, Mingguang,Chen, Cailin,Xu, Shen,Tang, Xingxing,Chen, Lingfeng,Chen, Runfeng,Huang, Wei
supporting information, p. 6376 - 6379 (2018/10/20)
Two new building blocks of perylene-embedded benzoazoles containing both rigid 2D-conjugated aromatic rings and flexible branched alkyl chains were designed and facilely synthesized in high yields for organic solar cells (OSCs). With a typical acceptor of
DERIVATIVES OF SQUARAINE, DYE FOR DYE-SENSITIZED SOLAR CELLS AND DYE-SENSITIZED SOLAR CELLS
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Paragraph 0190; 0202-0204; 0206; 0207, (2016/12/01)
The present invention refers to [...] derivatives, dye-sensitized solar cell for dye and dye sensitized solard cell relates to, high yield of dyestuffs [...] derivatives represented by formula 1, excellent light conversion efficiency, and in which a large
Co-adsorbent Materials with Hole Transporting Property for Dye-Sensitized Solar Cell and Method Dye-Sensitized Solar Cell comprises the same
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Paragraph 0088-0090; 0116; 0140, (2016/10/17)
The present invention refers to, a the hole future quality represented by compounds having formula 1, use as public absorption body thereof, and relates to solar cell including. [Formula 1]
Compounds having hole conducting property, co-adsorbent body comprising same, and dye-sensitized solar cell comprising the co-adsorbent body
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Paragraph 0037; 0041; 0043; 0078-0079; 0090-0091; 0104-0105, (2014/04/04)
An object of the present invention is to provide a novel concept coadsorbent that can be used instead of conventionally-used deoxycholic acid (DCA). The present invention provides a coadsorbent having hole conduction characteristics, including the compound represented by Formula 3, and provides a dye-sensitized solar cell including a light absorbing layer including the coadsorbent having hole conduction characteristics. The photocurrent and photovoltage of the dye-sensitized solar cell can be improved because it includes a light absorbing layer including the coadsorbent having hole conduction characteristics.
Tailor-made hole-conducting coadsorbents for highly efficient organic dye-sensitized solar cells
Choi, In Taek,Ju, Myung Jong,Song, Sang Hyun,Kim, Sang Gyun,Cho, Dae Won,Im, Chan,Kim, Hwan Kyu
supporting information, p. 15545 - 15555 (2013/11/19)
The Y-shaped, low molecular mass, hole-conductor (HC), acidic coadsorbents 4-{3,7-bis[4-(2-ethylhexyloxy)phenyl]-10H-phenothiazin-10-yl}benzoic acid (PTZ1) and 4-{3,7-bis[4-(2-ethylhexyloxy)phenyl]-10H-phenothiazin-10-yl}biphenyl-4- carboxylic acid (PTZ2)
A desirable hole-conducting coadsorbent for highly efficient dye-sensitized solar cells through an organic redox cascade strategy
Song, Bok Joo,Song, Hae Min,Choi, In Taek,Kim, Sang Kyun,Seo, Kang Duk,Kang, Min Soo,Lee, Myung Jun,Cho, Dae Won,Ju, Myung Jong,Kim, Hwan Kyu
supporting information; experimental part, p. 11115 - 11121 (2011/11/07)
Under the sun! A new low-molecular-weight and multiple-functional coadsorbent (HC-A) for highly efficient dye-sensitized solar cells has been developed. The NKX2677/HC-A-sensitized solar cell exhibited remarkably enhanced conversion efficiency by a factor
Synthesis and characterization of solution-processable highly branched iridium (III) complex cored dendrimer based on tetraphenylsilane dendron for host-free green phosphorescent organic light emitting diodes
Kim, Seul-Ong,Zhao, Qinghua,Thangaraju,Kim, Jang Joo,Kim, Yun-Hi,Kwon, Soon-Ki
experimental part, p. 139 - 145 (2011/12/04)
Solution processable highly branched iridium(III) complex fac-tris(2-phenylpyridyl)iridium-cored dendrimer based on tetraphenylsilane dendron and 2-ethylhexyloxy surface groups was prepared. The structure of dendrimer was confirmed by nuclear magnetic resonance, mass and infrared studies. Thermogravimetric analysis and differential scanning calorimetry studies show the thermal stability (T5%) of 625 K with high glass transition temperature of 423 K. Photoluminescence studies of dendrimer showed the core emission at 516 nm in solution and at 521 nm in film, indicating the highly branched non-conjugated tetrahedral tetraphenylsilane dendrons around the core highly inhibit the intermolecular interactions between the cores in the film. The solution processed green emitting phosphorescent organic light emitting diodes based on dendrimer were fabricated and characterized. The device using host free dendrimer as emitter showed the external quantum efficiency of 0.4%. The results show the potential of this new type of dendritic emitting structure in highly efficient solution processed host-free green phosphorescent organic light emitting diodes.
Synthesis and properties of highly efficient electroluminescent green phosphorescent iridium cored dendrimers
Lo,Namdas,Burn,Samuel
, p. 9721 - 9730 (2007/10/03)
A simple convergent procedure has been developed for the preparation of solution processable phosphorescent dendrimers with biphenyl-based dendrons and fac-tris(2-phenylpyridyl)iridium(III) cores. We found that the attachment point and branching of the de