Efficient triphenylamine dyes for solar cells: Effects of alkyl-substituents and π-conjugated thiophene unit

Shen, Ping; Liu, Yijiang; Huang, Xianwei; Zhao, Bin; Xiang, Na; Fei, Junjie; Li, Liming; Wang, Xueye; Huang, Hui; Tan, Songting

doi:10.1016/j.dyepig.2009.04.005

Cited by 121 publications

(52 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Figure 3c shows the UV-Vis absorption spectra of the PTh obtained at different reaction time. With the polymerization proceeding from 30 to 180 min, it is observed that the absorption band of the polymer gradually shifts to longer wavelength, which implies the extension of the conjugated chains along with the reaction [29].…”

Section: Characterization Of the Tio 2 :Ucnp Andmentioning

confidence: 97%

Fabrication of polythiophene–TiO2 heterojunction solar cells coupled with upconversion nanoparticles

Zhang

2014

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

We introduce lanthanide-doped LiYF 4 upconversion nanoparticles into TiO 2 film and use the obtained composite film to photocatalyze the polymerization of thiophene, developing a polythiophene-TiO 2 heterojunction coupled with upconversion nanoparticles. The upconversion nanoparticles, which are capable of converting long-wavelength photons into shorter ones, aim to broaden the light-harvesting of the heterojunction films. Solar cells are fabricated from the heterojunction films coupled with different contents of upconversion nanoparticles, and measured in respect to the incident photon-electron conversion efficiencies and the current density-voltage curves. It is revealed that the upconversion nanoparticles enable the devices to utilize the long-wavelength photons, and thus, the photovoltaic performances are enhanced. Moreover, by employing Raman spectroscopy, we monitor the process of polymerization on the TiO 2 substrate and put deep insight into the interfacial interaction of the heterojunction.

show abstract

Section: Characterization Of the Tio 2 :Ucnp Andmentioning

confidence: 97%

Fabrication of polythiophene–TiO2 heterojunction solar cells coupled with upconversion nanoparticles

Zhang

2014

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

show abstract

“…It is clearly seen that the absorption spectra of the dyes D1-D3 on TiO 2 films were broadened and blue-shifted in comparison with those in the solution due to the interaction of the anchoring group with the surface titanium ions [38] . The blue-shifted phenomenon was also observed in other organic dyes, which may be ascribed to H-type aggregation of the dyes on the TiO 2 surface [39] . To evaluate the possibilities of electron transfer from the excited dye molecule to the conductive band of TiO 2 and the dye regeneration, the redox potentials were measured via cyclic voltammetry (CV).…”

Section: Tablementioning

confidence: 88%

Molecular design of organic dyes based on vinylene hexylthiophene bridge for dye-sensitized solar cells

Liu

Zhao

Shen

et al. 2009

Sci. China Ser. B-Chem.

Self Cite

View full text Add to dashboard Cite

Three donor-(π-spacer)-acceptor (D-π-A) organic dyes, containing different groups (triphenylamine, di(p-tolyl)phenylamine, and 9-octylcarbazole moieties) as electron donors, were designed and synthesized. Nanocrystalline TiO 2 dye-sensitized solar cells were fabricated by using these dyes. It was found that the variation of electron donors in the D-π-A dyes played an important role in modifying and tuning photophysical properties of organic dyes. Under standard global AM 1.5 solar condition, the DSSC based on the dye D2 showed the best photovoltaic performance: a short-circuit photocurrent density (J sc ) of 13.93 mA/cm 2 , an open-circuit photovoltage (V oc ) of 0.71 V, and a fill factor (FF) of 0.679, corresponding to solar-to-electric power conversion efficiency (η ) of 6.72%. solar cells, dye sensitizer, electron donor

show abstract

“…Materials and reagents 4,7-Di-2-hexylthienyl-2,1,3-benzothiadiazole (1) [40], pinacol(4-(N,N-diphenylamino)-phenyl)-boronate (2) [41], N-(4-bromophenyl)-N,N-bis(4-formylphenyl)amine (3) [42], 4,7-di-(3-hexyl-2-formylthiophene-5-yl)-2,1,3-benzothiadiazole (M1) [43], 4,4-diformaltriphenylamine (M2) [40], 2,5-di-n-octyloxy-1,4-xylene-diethylphosphonate ester (M4) [44] were synthesized according to literature procedures with some modifications. Tetrakis(triphenylphosphine)palladium(0) (Pd(PPh 3 ) 4 ) (98 %) were obtained from Puyang Huicheng Chemical Co. Ltd and used without further purification.…”

Section: Methodsmentioning

confidence: 99%

Phenylenevinylene copolymers of dihexylthienylbenzothiadiazole and triphenylamine or tetraphenylbenzidine: synthesis, characterization and photovoltaic properties

et al. 2012

Self Cite

View full text Add to dashboard Cite

Three novel low-band gap phenylenevinylene copolymers (P1, P2, and P3), containing dihexylthienylbenzothiadiazole (DTBT) and triphenylamine (TPA) or tetraphenylbenzidine (TPD) were synthesized via the Wittig-Horner reaction. The effects of TPA and TPD on the thermal, optical, electrochemical and photovoltaic properties were investigated. The UV-Vis spectrum of P3, which contains TPD in the polymer backbone, exhibits a broader and stronger absorption in the film than those of P1 and P2. The bulk heterojunction solar cells were fabricated with the as-synthesized polymers as the donors and [6,6]-phenyl-C 61 -butyric acid methyl ester as the acceptor in a 1:4 weight ratio. The device based on P3 exhibits the maximum power conversion efficiency of 1.11 % under simulated AM 1.5 G solar irradiation (100 mW/cm 2 ).

show abstract

Efficient triphenylamine dyes for solar cells: Effects of alkyl-substituents and π-conjugated thiophene unit

Cited by 121 publications

References 48 publications

Fabrication of polythiophene–TiO2 heterojunction solar cells coupled with upconversion nanoparticles

Fabrication of polythiophene–TiO2 heterojunction solar cells coupled with upconversion nanoparticles

Molecular design of organic dyes based on vinylene hexylthiophene bridge for dye-sensitized solar cells

Phenylenevinylene copolymers of dihexylthienylbenzothiadiazole and triphenylamine or tetraphenylbenzidine: synthesis, characterization and photovoltaic properties

Contact Info

Product

Resources

About