1197992-32-7Relevant academic research and scientific papers
Synthesis and characterization of conjugated polymers with main-chain donors and pendent acceptors for dye-sensitized solar cells
Tan, Haijun,Pan, Chunyue,Wang, Gang,Wu, Yingying,Zhang, Yiping,Chen, Xuzhu,Zou, Yingping,Yu, Guipeng,Zhang, Min
, p. 16612 - 16618 (2013)
Herein, we report three conjugated polymers with main-chain donors and pendent π-acceptors as photosensitizers for dye-sensitized solar cells (DSSCs). The polymer PPTZF (which contains a phenothiazine (PTZ) chromophore and has a 9,9-dioctyl-fluorene (F) group as the donor unit in the main chain and a cyanoacrylic acid acceptor in the side chain, linked by a thiophene unit) was used as a basic structure. Then 9,9-dioctyl-carbazole (CZ) and triphenylamine (TPA) were selected to replace F and PTZ, respectively, as structural modifications to get another two polymers: PPTZCZ and PTPACZ. Finally, we fabricated devices and examined the effects of different donors with flexible alkyl chains on the photovoltaic performance of DSSCs. Our studies have revealed that the PTPACZ dye, which has a degree of polymerization (DP) of ~4, exhibited excellent photovoltaic performance with a relatively high power conversion efficiency of 4.4% under standard (Global Air Mass 1.5) illumination. Charge extraction and transient photovoltage decay measurements have demonstrated that the charge recombination lifetime (τ) is a crucial influencing factor on the open-circuit voltage of these polymer dyes. The Royal Society of Chemistry 2013.
Two-dimensional like conjugated copolymers for high efficiency bulk-heterojunction solar cell application: Band gap and energy level engineering
Duan, Chunhui,Wang, Chuandao,Liu, Shengjian,Huang, Fei,Choy, C. H. Wallace,Cao, Yong
, p. 685 - 694 (2011)
Three two-dimensional like conjugated copolymers PFSDCN, PFSDTA and PFSDCNIO, which consist of alternating fluorene and triphenylamine main chain, and different pendant acceptor groups (malononitrile, 1,3-diethtyl-2- thiobarbituric acid and 2-(1,2-dihydro
Anti-recombination organic dyes containing dendritic triphenylamine moieties for high open-circuit voltage of DSSCs
Zhang, Hai,Fan, Jie,Iqbal, Zafar,Kuang, Dai-Bin,Wang, Lingyun,Cao, Derong,Meier, Herbert
, p. 74 - 81 (2013)
Three novel sensitizers with dendritic triphenylamine moieties were synthesized and used for dye-sensitized solar cells (DSSCs). Their absorption spectra, electrochemical and photovoltaic properties were extensively investigated. All three DSSCs exhibit high open-circuit voltage over 0.8 V. The photovoltaic results indicate that the dendritic triphenylamine units improve the open-circuit voltage, which is attributed to the retardation of charge recombination, demonstrating that non-planar and larger molecules exert better blocking function. Under standard global AM 1.5 solar conditions, the best performance of the DSSCs exhibits a short-circuit current density of 10.35 mA cm-2, an open-circuit voltage of 0.836 V and a fill factor of 0.68, corresponding to an overall conversion efficiency of 5.87%.
Pyridinium p-DSSC dyes: An old acceptor learns new tricks
Marri, Anil Reddy,Black, Fiona A.,Mallows, John,Gibson, Elizabeth A.,Fielden, John
, p. 508 - 517 (2019/03/17)
A family of six (five new) thiophenyl bridged triarylamine-donor based dyes with pyridine anchoring groups have been synthesized and studied as sensitizers for the p-type dye-sensitized solar cell (p-DSSC). They comprise bis-dicyano acceptor systems with
Poly (triphenylamine-fluorenylmethylchloroformate) dye and its application
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, (2017/02/28)
The invention discloses a poly(triphenylamine-fluorene) dye and its application. The poly(triphenylamine-fluorene) dye is prepared through a Stille coupling reaction of a monomer having a triphenylamine structure and a monomer having a fluorene structure. The prepared poly(triphenylamine-fluorene) dye has a triphenylamine and fluorene composite donor unit structure, and can be applied in the production of dye-sensitized solar cells in order to obtain dye-sensitized solar cells with high current density and high photoelectric conversion rate.
Evidence for Interfacial Halogen Bonding
Swords, Wesley B.,Simon, Sarah J.C.,Parlane, Fraser G.L.,Dean, Rebecca K.,Kellett, Cameron W.,Hu, Ke,Meyer, Gerald J.,Berlinguette, Curtis P.
, p. 5956 - 5960 (2016/05/19)
A homologous series of donor-π-acceptor dyes was synthesized, differing only in the identity of the halogen substituents about the triphenylamine (TPA; donor) portion of each molecule. Each Dye-X (X=F, Cl, Br, and I) was immobilized on a TiO2 surface to investigate how the halogen substituents affect the reaction between the light-induced charge-separated state, TiO2(e-)/Dye-X+, with iodide in solution. Transient absorption spectroscopy showed progressively faster reactivity towards nucleophilic iodide with more polarizable halogen substituents: Dye-F Dye-Cl Dye-Br Dye-I. Given that all other structural and electronic properties for the series are held at parity, with the exception of an increasingly larger electropositive σ-hole on the heavier halogens, the differences in dye regeneration kinetics for Dye-Cl, Dye-Br, and Dye-I are ascribed to the extent of halogen bonding with the nucleophilic solution species.
Symmetric and unsymmetric donor functionalization. comparing structural and spectral benefits of chromophores for dye-sensitized solar cells
Hagberg, Daniel P.,Jiang, Xiao,Gabrielsson, Erik,Linder, Mats,Marinado, Tannia,Brinck, Tore,Hagfeldt, Anders,Sun, Licheng
experimental part, p. 7232 - 7238 (2010/05/18)
A series of organic chromophores have been synthesized in order to investigate the benefits of structural versus spectral properties as well as the absorption properties and solar cell performance with unsymmetrically introduced substituents in the chromophore. Exceptionally high open-circuit voltage, Voc, was found for the symmetrical structurally benefited dye, which also gave the best overall solar cell performance.
