Design and Synthesis of the D−π–A-Structured Coadsorbents with the Phenanthraquinone Core and Its Application in Dye-Sensitized Solar Cells

Karthika, P.; Ganesan, S.; Kamalakannan, Shanmugasundaram; Prakash, M.

doi:10.1021/acs.jpcc.9b12042

Cited by 8 publications

(7 citation statements)

References 68 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The interaction distance between the organic additives and anatase TiO 2 surface have strong non-covalent bonds and covalent bond (i.e., H-bond and vdWs) interactions. The calculated Previous literature exposes that nature of the geometries and interaction act as vital role in PCE of the DSSCs device [43,44]. Different functional groups present in all five organic additives strongly interact with covalent and non-covalent (H-bond and vdWs) on TiO 2 surface and it was clearly revealed the Figure 9.…”

Section: Resultsmentioning

confidence: 90%

Addition of Organic Compounds in Gelatin-biopolymer Gel Electrolyte for Enhanced Dye-sensitized Solar Cells

Devikala,

Maryleedarani Abisharani

2024

Advances in Solar Photovoltaic Energy Systems

View full text Add to dashboard Cite

This chapter introduced a new series of organic compound additives like thiophene 2,5-dicarboxylic acid (TDA), sulfanilamide (SAA), 2,6-diamino pyridine (DAP), dibenzo-18-crown-6 (DBC) and 2,6-pyridine dicarboxylic acid (PDA) with gelatin/KI/I2 consist gel polymer electrolytes for dye-sensitized solar cells (DSSCs) application. Nowadays, it is focusing on biopolymers for preparing gel electrolytes for DSSCs application which is a conventional renewable energy source. Biopolymers are abundant in nature, and they are non-toxic, thermally stable, environmentally friendly, low-cost, and have good mechanical and physical properties. The introduced novel gelatin (GLN) biopolymer-based gel electrolytes play a role in improving ionic conductivity and stability, and it also play a better ability for ionic mobility. The low-cost and commercialized organic additive molecules with electron donors like S, O and N elements were strongly coordinated on the surface TiO2 and fermi level shift into negative potentials. The organic additive compound SAA achieved a very active additive and easily reduced the recombination reaction between the surface of TiO2 and I3− ions. This phenomenon readily improves the stability and overall η of the DSSC. During the DSSCs process, intrinsic charge carrier transfer between both electrodes as well as the continuous regeneration of the dye molecules. The surface study and conductivity of prepared gelatin-based gel electrolyte with N, S and O-based additives were characterized by fourier transform infrared spectroscopy (FTIR), UV-visible, X ray diifraction (XRD), Electrochemical Impedance Spectroscopy (EIS) and dye-sensitized solar cells (DSC), respectively. Furthermore, to examine the adsorption behaviour of organic additives on TiO2 (101) surface and negative fermi level shift on TiO2 surface were analysed by density functional theory (DFT) theoretical study.

show abstract

Section: Resultsmentioning

confidence: 90%

Addition of Organic Compounds in Gelatin-biopolymer Gel Electrolyte for Enhanced Dye-sensitized Solar Cells

Devikala,

Maryleedarani Abisharani

2024

Advances in Solar Photovoltaic Energy Systems

View full text Add to dashboard Cite

show abstract

“…This indicates that the adsorbed dye on the TiO 2 surface can easily inject electrons into the photoanode. Recent reports suggest that low Fermi energies of co-adsorbents on the TiO 2 surface are beneficial for easy injection of the electron to the semiconductor surface …”

Section: Resultsmentioning

confidence: 99%

“…Recent reports suggest that low Fermi energies of co-adsorbents on the TiO 2 surface are beneficial for easy injection of the electron to the semiconductor surface. 55 3.2. Optoelectrical Studies.…”

Section: Resultsmentioning

confidence: 99%

Correlation Study on Biopolymer-Blended Cobalt and Iodine Gel Electrolytes to Enhance the Efficiency of Natural Dye-Based DSSCs

et al. 2021

View full text Add to dashboard Cite

In this study, we prepared a new natural sensitizer from blood berry extract (BB dye) and coupled it with a series of biopolymer gel electrolytes consisting of Co2+/3+ or I–/I3 –, such as GE 1, GE 2, GE 3, GE 4, GE 5, and GE 6. An as-prepared natural dye was characterized via UV–visible spectroscopy to confirm the behavior of the dye, which showed an absorption range at 484 nm. The interaction between the TiO2 surface and the BB dye was analyzed by density functional theory (DFT) studies. All six biogel electrolytes were characterized using Fourier transform infrared (FTIR), UV, X-ray diffraction (XRD), differential scanning calorimetry (DSC), scanning electron microscopy (SEM), and cyclic voltammetry (CV) techniques to validate the integration of redox mediators into polymer hosts. The bioelectrolytes GE 1, GE 2, GE 4, and GE 5 contain a single polymer matrix (xanthan gum or gelatin) and showed a very low photo-conversion efficiency. At the same time, GE 3 and GE 6 contain a blended polymer matrix (xanthan gum and gelatin) and achieved a higher power conversion efficiency (PCE) of 0.86 and 2.06%, respectively, under 1 sun illumination. The redox mediator Co2+/3+ or I–/I3 – incorporated into both single and blended polymer matrixes played a vital role in regenerating the BB dye. In this case, the bioblended polymer gel electrolyte (GE 6) consisting of a Co2+/3+ redox pair attained a high conductivity of 5.97 × 10–5 S/cm–1 and a chemical capacitance of 15.02 ×10–6 F compared to the I–/I3 –-incorporated electrolyte. The PCE reports were sustained by the electrochemical impedance spectrum results such as a larger charge at the Pt/electrolyte interface, a lower charge transfer resistance at the TiO2/dye/electrolyte interface, and a higher chemical capacitance. The introduction of a biopolymer cobalt redox-based gel electrolyte with the natural BB dye improves the electron lifetime and readily reduces the recombination reaction. The integration of a natural dye with a blended biopolymer gel electrolyte can pave the way to generate new eco-friendly dye-sensitized solar cells (DSSCs) with high stability.

show abstract

“…However, absorption of a narrow band of light spectra which increases regeneration of electron recombination due to surface aggregation phenomena, and lowering the thermal and photostability of the device are the key drawbacks of using organic sensitizers . Nonetheless, surface aggregation of dye molecules can be improved by the fabrication of dye molecules with two anchoring (A) groups (D-A-π-A system) with a long or bulky group (e.g., pyrrole group) between anchoring groups, by the addition of coadsorbent, , (e.g., 4-guanidiobutyric acid, deoxycholic acid, chenodeoxycholic acid, hexadecylmalonic acid, dineohexyl bis (3,3-dimethylbutyl) phosphinic acid, etc. ), and by introducing an isolating group in the side chain of the dye molecule .…”

Section: Dye-sensitized Solar Cells (Dsscs)mentioning

confidence: 99%

Biopolymer-Based Electrolytes for Dye-Sensitized Solar Cells: A Critical Review

2020

View full text Add to dashboard Cite

Continual escalation of our world population demands a vast and safe energy supply, the majority of which has been produced by fossil fuel sources. However, because of the huge energy demand, exponential depletion of these nonrenewable energy sources is inescapable and forthcoming in the coming century. Hence, utilization of renewable energy such as solar energy has gained attention because of its direct conversion of light energy into electrical power without any harmful environmental impacts. Solar energy has been harvested by different types of solar cells varying from inorganic to organic to the combination of both. Among them, the dye-sensitized solar cell (DSSC) with a biopolymer-based electrolyte has gained enormous consideration from researchers because of its sustainability, abundance of available raw material, low production cost, and easy production in addition to the low volatilization of electrolytes compared to liquid state electrolytes. This review aims to give an overview of the recent inputs in the development of biopolymer-based DSSCs. The performance of the biopolymers as electrolytes in DSSCs will be critically reviewed based on the physicochemical properties of the biopolymers. Key technical challenges and future research areas for the advancement of biopolymer-based DSSCs are also discussed.

show abstract

Design and Synthesis of the D−π–A-Structured Coadsorbents with the Phenanthraquinone Core and Its Application in Dye-Sensitized Solar Cells

Cited by 8 publications

References 68 publications

Addition of Organic Compounds in Gelatin-biopolymer Gel Electrolyte for Enhanced Dye-sensitized Solar Cells

Addition of Organic Compounds in Gelatin-biopolymer Gel Electrolyte for Enhanced Dye-sensitized Solar Cells

Correlation Study on Biopolymer-Blended Cobalt and Iodine Gel Electrolytes to Enhance the Efficiency of Natural Dye-Based DSSCs

Biopolymer-Based Electrolytes for Dye-Sensitized Solar Cells: A Critical Review

Contact Info

Product

Resources

About