A novel 2,7-diaminofluorene-based organic dye for a dye-sensitized solar cell

Lin, Lu‐Yin; Lee, Chuan‐Pei; Yeh, Min–Hsin; Baheti, Abhishek; Vittal, R.; Thomas, K. R. Justin; Ho, Kuo‐Chuan

doi:10.1016/j.jpowsour.2012.04.084

Cited by 24 publications

(7 citation statements)

References 55 publications

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“…As a result, the open-circuit voltage (V oc ) for the pertinent DSSCs may decrease with further increase in the thickness of the TiO 2 lm. 52 The optimized thickness of 200 nm particle sized TiO 2 lm for the referenced N719 dye in our work is about 3 mm. In order to make a comparison, the four sensitizers (CB1-4) are also adopted the same thickness of the TiO 2 lm.…”

Section: Photovoltaic Performancementioning

confidence: 88%

Novel BODIPY dyes with electron donor variety for dye-sensitized solar cells

Liao

Zhao

et al. 2017

RSC Adv.

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Four new donor-p-acceptor (D-p-A) structured organic sensitizers (CB1-4), with N-octyl or Nmethoxyphenyl carbazole connected to a 2-cyanoacrylate BODIPY module through their 2 or 3positions, were designed and synthesized for application in dye-sensitized solar cells (DSSCs). The photophysical and electrochemical properties were systematically studied and their performances as sensitizers in DSSCs were comparatively investigated. The structure-property relationship suggests that the electron-donating ability and substitution positions of the donor have a significant effect on these dyes' electronic and photovoltaic properties. Electron-rich N-methoxyphenyl carbazole as a donor and substitution at the 2-position shows a positive influence on the efficiency of DSSCs. Consequently, CB4, with the combination of these advantages, presents the broadest (300-650 nm) and strongest absorption profile with a high extinction coefficient (1.71 Â 10 5 M À1 cm À1 ) and the best photovoltaic performance with a short circuit photocurrent density of 10.20 mA cm À2 , an open circuit voltage of 600 mV, and a fill factor of 0.7, corresponding to a fairly good overall conversion efficiency of 4.28% under AM 1.5 irradiation (100 mW cm À2 ). † Electronic supplementary information (ESI) available: 1 H NMR and 13 C NMR spectra and mass spectra of all unknown compounds. See

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Section: Photovoltaic Performancementioning

confidence: 88%

Novel BODIPY dyes with electron donor variety for dye-sensitized solar cells

Liao

Zhao

et al. 2017

RSC Adv.

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“…Such prepared (a-TiO 2 + QF-1125) electrodes were preheateded at 80 °C before being immersed in dye solutions [3 × 10 –4 M in CH 3 CN/ t -BuOH, 1:1 (v/v)] of N719 , CI101 , CBTR , CB111 , and CB108 for 36 h. , The Pt counter electrodes were prepared by sputtering-deposition (Hitachi E-1045 ion sputter) of 20 nm thick layers of Pt onto FTO substrates and placed over the dye-adsorbed TiO 2 electrodes. The edges of the cell were sealed with Dupont Surlyn 1706 (thickness: 60 μ) spacer at 175 °C using a hot plate. − To complete the cell assembly, the electrolyte comprised of 0.1 M lithium iodide, 0.05 M iodide, 0.5 M 1,2-dimethyl-3-propylimidazolium iodide, and 0.5 M 4- tert -butylpyridine in acetonitrile was injected into the intervening space between the TiO 2 and Pt electrodes through the two predrilled holes, which were then covered with a microscope slide and sealed with Dupont Surlyn 1706 (thickness: 30 μ). The size of DSSC is 1.5 × 2.5 cm 2 , and the active area is 0.4 × 0.4 cm 2 .…”

Section: Methodsmentioning

confidence: 99%

Effect of Extended Conjugation of N-Heterocyclic Carbene-Based Sensitizers on the Performance of Dye-Sensitized Solar Cells

Akula

Chen

et al. 2017

Inorg. Chem.

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We report the synthesis, characterization, and photovoltaic properties of four ruthenium complexes (CI101, CBTR, CB111, and CB108) having various N-heterocyclic carbene ancillary ligands, pyridine-imidazole, -benzimidazole, -dithienobenzimidazole, and -phenanthroimidazole, respectively. These complexes were designed to investigate the effect of extended conjugation ordained from ring fusion on the power conversion efficiencies of the solar cells. The device sensitized by CB108, the pyridine-phenanthroimidazole conjugated complex, showed an improved efficiency (9.89%) compared to those of pyridine-benzimidazole conjugated system (CBTR, 9.72%) and the parent unfused ring system (CI101, 6.24%). Surprisingly, the sulfur-incorporated pyridine-dithienobenzimidazole system (CB111, 9.24%) exhibited a little lower efficiency than that of N719 (9.41%). The enhanced photovoltaic performance of CB108 was mainly attributed to the increase in electron lifetime and diffusion length confirmed by the electrochemical impedance spectroscopy.

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“…Among various types of organic additives, 4- tert -butylpyridine, N -alkylbenzimidazole, and guanidinium thiocyanate are the most influential in DSSC application. After all, 4-TBP has the potential to be a great organic additive in terms of the safety and performance of DSSC . However, its concentration needs to be optimized first to attain maximum efficiency.…”

Section: Available Alternatives: Polymer Electrolytesmentioning

confidence: 99%

“…After all, 4-TBP has the potential to be a great organic additive in terms of the safety and performance of DSSC. 203 However, its concentration needs to be optimized first to attain maximum efficiency. Besides, extensive studies are required to understand the fundamental theory of the materials behind incorporation in polymer electrolytes for DSSC.…”

Section: Carbonaceous Nanoparticlesmentioning

confidence: 99%

Review on the Revolution of Polymer Electrolytes for Dye-Sensitized Solar Cells

et al. 2021

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Dye-sensitized solar cells (DSSCs) are a suitable replacement for conventional silicon solar cells due to their unique features, such as high energy conversion efficiency and cheap manufacturing cost. The liquid-state DSSCs, however, are poorly sustainable on a long-term basis because volatile liquids are used. The early intention of incorporating polymer into the liquid electrolytes was to curb the problem encountered by liquid electrolytes and enable the DSSCs to function as a long-term stability device. This work briefly reviews how the improvisation has been done on the polymer electrolytes formulation and the extent of how each element can affect the cell efficiency and long-term stability. The role of each component, such as the type of host polymer, iodide salts, nanoparticles, and organic additives that improve the performance of DSSCs, has also been highlighted. This clarified the main purpose of introducing various types of additives into electrolytes to enhance the transport properties as well as the performance of the DSSCs.

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A novel 2,7-diaminofluorene-based organic dye for a dye-sensitized solar cell

Cited by 24 publications

References 55 publications

Novel BODIPY dyes with electron donor variety for dye-sensitized solar cells

Novel BODIPY dyes with electron donor variety for dye-sensitized solar cells

Effect of Extended Conjugation of N-Heterocyclic Carbene-Based Sensitizers on the Performance of Dye-Sensitized Solar Cells

Review on the Revolution of Polymer Electrolytes for Dye-Sensitized Solar Cells

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