An efficient metal-free sensitizer for dye-sensitized solar cells

Tsao, Ming-Hsiu; Wu, Tzi‐Yi; Wang, H. Paul; Sun, I‐Wen; Su, Shyh Gang; Lin, Yuan-Chung; Chang, Chih‐Wen

doi:10.1016/j.matlet.2010.10.072

Cited by 86 publications

(17 citation statements)

References 11 publications

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“…The optical band gap ( E g ) of PDiCP homopolymer film calculated using Planck equation was 2.58 eV: E g = 1241/ λ onset where the onset UV absorption wavelength ( λ onset ) of the π-π* transition band of PDiCP was 481 nm [35,36]. The onset oxidation potential vs. Ag/AgCl (3 M KCl) was 0.82 V, the E FOC of ferrocene/ferrocenium vs. Ag/AgCl (3 M KCl) determined using cyclic voltammetry was 0.80 V, and the onset oxidation potential vs. E FOC was found to be 0.02 V. The HOMO and LUMO energy levels of PDiCP determined from the onset oxidation potential with respect to the energy level of ferrocene/ferrocenium couple (−4.8 eV less than vacuum energy level) [37,38] and E g were taken as −4.82 and −2.24 eV, respectively.…”

Section: Resultsmentioning

confidence: 99%

Electrochromic Devices Based on Poly(2,6-di(9H-carbazol-9-yl)pyridine)-Type Polymer Films and PEDOT-PSS

Kuo

Chang

et al. 2018

Polymers

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2,6-Di(9H-carbazol-9-yl)pyridine (DiCP) was synthesized and its corresponding homopolymer (PDiCP) and copolymers (P(DiCP- co -CPDT), P(DiCP- co -CPDT2), P(DiCP- co -CPDTK), and P(DiCP- co -CPDTK2)) were synthesized electrochemically. The anodic copolymer with DiCP:cyclopentadithiophene ketone (CPDTK) = 1:1 feed molar ratio showed high transmittance change (Δ T %) and colouration efficiency ( η ), which were measured as 39.5% and 184.1 cm 2 C −1 at 1037 nm, respectively. Electrochromic devices (ECDs) were composed of PDiCP, P(DiCP- co -CPDT), P(DiCP- co -CPDT2), P(DiCP- co -CPDTK), and P(DiCP- co -CPDTK2) as anodically-colouring polymers, and poly(3,4-ethylenedioxythiophene)-poly(styrene sulfonic acid) (PEDOT-PSS) as cathodically-colouring polymers. P(DiCP- co -CPDTK)/PEDOT-PSS ECD showed light silverish-yellow at 0.0 V, light grey at 0.7 V, grey at 1.3 V, light greyish blue at 1.7 V, and greyish blue at 2.0 V. Moreover, P(DiCP- co -CPDTK)/PEDOT-PSS ECD presented high Δ T (38.2%) and high η (633.8 cm 2 C −1 ) at 635 nm.

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Section: Resultsmentioning

confidence: 99%

Electrochromic Devices Based on Poly(2,6-di(9H-carbazol-9-yl)pyridine)-Type Polymer Films and PEDOT-PSS

Kuo

Chang

et al. 2018

Polymers

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“…Upon applying potentials more than 1.2 V, the peaks of P(MPS-co-TTPA), P(MPO-co-TTPA), and P(ANIL-co-TTPA) films at 417, 369, and 385 nm, respectively, decreased little by little and their charge carrier absorption bands appeared at 964, 914, and 960 nm, respectively, implying the formation of polaron and bipolaron of copolymer films [26]. The band gap energy values (E g ) of PMPS, PMPO, PANIL, PTTPA, P(MPS-co-TTPA), P(MPO-co-TTPA), and P(ANIL-co-TTPA) can be calculated according to the following Planck equation [27,28],…”

Section: Spectroelectrochemical Studies Of Copolymer Filmsmentioning

confidence: 99%

“…The E g of PMPS, PMPO, PANIL, PTTPA, P(MPS-co-TTPA), P(MPO-co-TTPA), and P(ANIL-co-TTPA) were 2. PANIL, PTTPA, P(MPS-co-TTPA), P(MPO-co-TTPA), and P(ANIL-co-TTPA) can be calculated according to the following Planck equation [27,28],…”

Section: Spectroelectrochemical Studies Of Copolymer Filmsmentioning

confidence: 99%

Dithienylpyrrole- and Tris[4-(2-thienyl)phenyl]amine-Containing Copolymers as Promising Anodic Layers in High-Contrast Electrochromic Devices

Chang

2018

Coatings

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Three dithienylpyrrole-and tris[4-(2-thienyl)phenyl]amine-containing copolymers (P(MPS-co-TTPA), P(MPO-co-TTPA), and P(ANIL-co-TTPA)) were deposited on indium tin oxide (ITO) surfaces using electrochemical polymerization. Spectroelectrochemical characterizations of polymer films revealed that P(MPS-co-TTPA) film was light olive green, greyish-green, bluish grey, and grey in neutral state, intermediate state, oxidized state, and highly oxidized state, respectively, whereas P(MPO-co-TTPA) film was green moss, foliage green, dark greyish-green, and bluish-grey in neutral state, intermediate state, oxidized state, and highly oxidized state, respectively. The ∆T max of P(MPS-co-TTPA) film at 964 nm, P(MPO-co-TTPA) film at 914 nm, and P(ANIL-co-TTPA) film at 960 nm were 67.2%, 60.7%, and 67.1%, respectively, and the coloration efficiency (η) of P(MPS-co-TTPA) film at 964 nm, P(MPO-co-TTPA) film at 914 nm, and P(ANIL-co-TTPA) film at 960 nm were calculated to be 260.3, 176.6, and 230.8 cm 2 C −1 , respectively. Dual type complementary colored electrochromic devices (ECDs) were constructed using P(MPS-co-TTPA), P(MPO-co-TTPA), or P(ANIL-co-TTPA) as anodic copolymer layer and PProDOT-Et 2 as cathodic polymer layer. P(MPO-co-TTPA)/PProDOT-Et 2 ECD revealed high ∆T (55.1%) and high η (766.5 cm 2 C −1) at 580 nm. Moreover, P(MPS-co-TTPA)/PProDOT-Et 2 , P(MPO-co-TTPA)/PProDOT-Et 2 , and P(ANIL-co-TTPA)/PProDOT-Et 2 ECDs showed satisfactory long-term cycling stability and optical memory.

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“…The optical band gap (E g ) of polymers was calculated using the wavelength value at the onset of the π-π* transition (λ onset ) based on the [49,50] and is shown in Table 3. PMDOB showed smaller band gaps than PIND when the polymer films were prepared potentiodynamically by scanning the potential between 0 V and 1.2 V for 20 cycles and prepared potentiostatically at 0.9 V (or 1.2 V) on ITO glass electrodes.…”

Section: Spectroelectrochemical Properties Of the Polymer Films In Somentioning

confidence: 99%

Electrochemical synthesis, characterization and electrochromic properties of indan and 1,3-benzodioxole-based poly(2,5-dithienylpyrrole) derivatives

Wu¹,

Liao²,

Chen³

2014

Electrochimica Acta

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An efficient metal-free sensitizer for dye-sensitized solar cells

Cited by 86 publications

References 11 publications

Electrochromic Devices Based on Poly(2,6-di(9H-carbazol-9-yl)pyridine)-Type Polymer Films and PEDOT-PSS

Electrochromic Devices Based on Poly(2,6-di(9H-carbazol-9-yl)pyridine)-Type Polymer Films and PEDOT-PSS

Dithienylpyrrole- and Tris[4-(2-thienyl)phenyl]amine-Containing Copolymers as Promising Anodic Layers in High-Contrast Electrochromic Devices

Electrochemical synthesis, characterization and electrochromic properties of indan and 1,3-benzodioxole-based poly(2,5-dithienylpyrrole) derivatives

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