Experimental and theoretical study of organic sensitizers for solid-state dye-sensitized solar cells (s-DSSCs)

Delices, Annette; Zhang, Jinbao; Santoni, Marie‐Pierre; Dong, Chang‐Zhi; Maurel, François; Bellynck, Sébastien; Vlachopoulos, Nick; Hagfeldt, Anders; Jouini, Mohamed

doi:10.1016/j.jphotochem.2022.113890

Cited by 10 publications

(8 citation statements)

References 86 publications

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“…Hence, an examination was performed to evaluate the thermodynamic viability of the electron injection, recombination, and regeneration mechanisms of the MD‐1‐2 co‐sensitizers. The free energies (∆ G inj , ∆ G rec , and ∆ G reg ) associated with these processes were estimated using Equations ()–(), and the resulting data are presented in Table 2 21

∆ G_{inj} ((), eV) goodbreak= E_{OX}^{{dye}^{*}} goodbreak- E_{CB}

∆ G_{reg} ((), eV) goodbreak= E_{OX}^{dye} goodbreak- E_{redox}

∆ G_{rec} ((), eV) goodbreak= E_{OX}^{dye} goodbreak- E_{CB}

…”

Section: Resultsmentioning

confidence: 99%

“…As can be observed from the data, all of the ΔG inj values obtained were negative, indicating the thermodynamic feasibility of all of the aforementioned processes. 21 Based on the obtained electrochemical data, it can be concluded that MD-2 is a potential dye with greater electron injection feasibility than recombination. The free energy (ΔG inj ) of the acid/base sensitizers MD-1-2 increased in the order MD-2 (À0.56 eV) > MD-1 (À0.49 eV), indicating that ΔG inj was for MD-2, suggesting sufficient energy to drive electron injection from the excited dye molecules to the TiO 2 CB edge, which is primarily relevant to DSSC.…”

Section: Electrochemical Propertiesmentioning

confidence: 88%

“…The free energies (ΔG inj , ΔG rec , and ΔG reg ) associated with these processes were estimated using Equations ( 2)-( 4), and the resulting data are presented in Table 2. 21 ΔG inj eV…”

Section: Electrochemical Propertiesmentioning

confidence: 99%

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Synthesis of MD‐1‐2 co‐sensitizers for 10.35% efficient acid–base pairing with N3 in DSSCs

Hossan

2024

Applied Organom Chemis

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This work presents a comprehensive investigation of novel organic dyes MD‐1‐2 as active acid and base co‐sensitizers in dye‐sensitized solar cells (DSSCs), using well‐known Ru(II)‐based N3 dyes. These co‐sensitizers contain a triphenylamine ring as a donor scaffold linked with an electron‐withdrawing cyanopyridyl and cyano benzoic acid acceptor for MD‐1‐2. In this study, we demonstrated the significant impact of base dyes with pyridine anchoring units on the photovoltaic parameters of N3‐sensitized devices. This methodology takes advantage of the ability of carboxyl and pyridyl moieties to interact with the Brønsted acid and Lewis acid sites on TiO2 surfaces, respectively. By reducing competition between dyes for surface binding, dye packing density on the TiO2 is enhanced while electron recombination is minimized, leading to higher photovoltage. Furthermore, the influence of varying sensitizer/co‐sensitizer ratios was comprehensively studied. Outcomes showed devices made using co‐sensitizer MD‐1‐2 with sensitizer N3 at all relative concentrations surpassed those with only N3. Importantly, the co‐sensitized devices that were made utilizing 0.3 mM acid–base MD‐1 and N3 sensitizer had the greatest solar energy capacity. It had a power conversion efficiency of 10.35%, a short‐circuit current density of 20.01 mA·cm−2, and an open‐circuit voltage of 752 mV. The results provide fresh insight into optimizing devices to create DSSCs with improved efficiency by choosing acceptable co‐sensitizers at suitable concentrations.

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∆ G_{inj} ((), eV) goodbreak= E_{OX}^{{dye}^{*}} goodbreak- E_{CB}

∆ G_{reg} ((), eV) goodbreak= E_{OX}^{dye} goodbreak- E_{redox}

∆ G_{rec} ((), eV) goodbreak= E_{OX}^{dye} goodbreak- E_{CB}

…”

Section: Resultsmentioning

confidence: 99%

Section: Electrochemical Propertiesmentioning

confidence: 88%

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Synthesis of MD‐1‐2 co‐sensitizers for 10.35% efficient acid–base pairing with N3 in DSSCs

Hossan

2024

Applied Organom Chemis

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“…Among the four dyes, ss-DSSC based on dye 67 exhibited a best PCE of 1.75 % high FF (0.57), V oc (550 mV) and J sc (5.6 mA/cm 2 ). [155] Incorporation of additional D or A units into the D-π-A structure, producing 2D-π-A or D-A'-π-A, respectively. These modifications lead to the broadening and shifting of dye absorption towards the NIR region.…”

Section: Organic Dyes With Cyanoacrylic-acid Anchoring Unitmentioning

confidence: 99%

“…The HTM was deposited by in‐situ photoelectrochemical polymerization process in organic and aqueous medium. Among the four dyes, ss‐DSSC based on dye 67 exhibited a best PCE of 1.75 % high FF (0.57), V oc (550 mV) and J sc (5.6 mA/cm 2 ) [155] …”

Section: Metal‐free Organic Dyes For Ss‐dsscsmentioning

confidence: 99%

Molecular Engineering of Photosensitizers for Solid‐State Dye‐Sensitized Solar Cells: Recent Developments and Perspectives

Yadagiri,

Kumar Kaliamurthy,

Yoo

et al. 2023

ChemistryOpen

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Dye‐sensitized solar cells (DSSCs) are a feasible alternative to traditional silicon‐based solar cells because of their low cost, eco‐friendliness, flexibility, and acceptable device efficiency. In recent years, solid‐state DSSCs (ss‐DSSCs) have garnered much interest as they can overcome the leakage and evaporation issues of liquid electrolyte systems. However, the poor morphology of solid electrolytes and their interface with photoanodes can minimize the device performance. The photosensitizer/dye is a critical component of ss‐DSSCs and plays a vital role in the device‘s overall performance. In this review, we summarize recent developments and performance of photosensitizers, including mono‐ and co‐sensitization of ruthenium, porphyrin, and metal‐free organic dyes under 1 sun and ambient/artificial light conditions. We also discuss the various requirements that efficient photosensitizers should satisfy and provide an overview of their historical development over the years.

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The role of acceptor and π-bridge for donor-driven halochromism of D-π-A N,N-dialkylaminostyrylhetarenes

et al. 2023

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Experimental and theoretical study of organic sensitizers for solid-state dye-sensitized solar cells (s-DSSCs)

Cited by 10 publications

References 86 publications

Synthesis of MD‐1‐2 co‐sensitizers for 10.35% efficient acid–base pairing with N3 in DSSCs

Synthesis of MD‐1‐2 co‐sensitizers for 10.35% efficient acid–base pairing with N3 in DSSCs

Molecular Engineering of Photosensitizers for Solid‐State Dye‐Sensitized Solar Cells: Recent Developments and Perspectives

The role of acceptor and π-bridge for donor-driven halochromism of D-π-A N,N-dialkylaminostyrylhetarenes

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