Regulation of energy levels and kinetics in dye-sensitized solar cells: Synergistic effect of N,N-bis(9,9-dimethyl-fluoren-2-yl)-aniline and 3,4-ethylenedioxythiophene
Source abstract
Abstract
Abstract Three D-π-A type organic dyes are used to demonstrate synergistic effect of 3,4-ethylenedioxythiophene (EDOT) and N,N-bis(9,9-dimethyl-fluoren-2-yl)-aniline (DFA) on performance of device in iodine and cobalt electrolytes. The integrative analysis of the incident photon-to-collected electron conversion efficiency (IPCE), the time-correlated single-photon counting (TCSPC) and transient absorption spectra disclose that the rich-electron EDOT effectively improves short-circuit current densities by achieving a broad spectra response from a molecular engineering viewpoint. Electrical impedance and current-voltage simulation reveal that DFA as an interface engineering block is able to enhance open-circuit voltage mainly by simultaneous decreasing the thermodynamics and kinetics loss. The quantitative analysis of energy loss shows that the cobalt electrolyte is suitable for highly efficient cell because of their relatively low free energy loss of regeneration process and low energy loss caused by light-intensity-dependent recombination.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: TiO2 Photocatalysis and Solar Cells · Advanced Photocatalysis Techniques · Porphyrin and Phthalocyanine Chemistry
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (38)
Show source-provided references
1. A low cost, high-efficiency solar-cell based on dye-sensitized colloidal TiO2 films10.1038/353737a0 ↗
2. Engineering of efficient panchromatic sensitizers for nanocrystalline TiO2-based solar cells10.1021/ja003299u ↗
3. Dye-sensitized solar cells with conversion efficiency of 11.1%10.1143/JJAP.45.L638 ↗
4. Enhance the optical absorptivity of nanocrystalline TiO2 film with high molar extinction coefficient ruthenium sensitizers for high performance dye-sensitized solar cells10.1021/ja801942j ↗
5. Dye-sensitized solar cells with a high absorptivity ruthenium sensitizer featuring a 2-(hexylthio)thiophene conjugated bipyridine10.1021/jp9006872 ↗
6. High efficiency dye-sensitized nanocrystalline solar cells based on ionic liquid polymer gel electrolyte10.1039/B209322G ↗
7. Efficient dye-sensitized solar cells with an organic photosensitizer featuring orderly conjugated ethylenedioxythiophene and dithienosilole blocks10.1021/cm9036988 ↗
8. Molecular engineering of organic sensitizers for solar cell applications10.1021/ja066376f ↗
9. High performance organic photosensitizers for dye-sensitized solar cells10.1039/b917065k ↗
10. Silole-spaced triarylamine derivatives as highly efficient organic sensitizers in dye-sensitized solar cells (DSSCs)10.1039/b926163j ↗
11. A polymer gel electrolyte to achieve [greater-than-or-equal]6% power conversion efficiency with a novel organic dye incorporating a low-band-gap chromophore10.1039/b809376h ↗
12. Efficient far red sensitization of nanocrystalline TiO2 films by an unsymmetrical squaraine dye10.1021/ja0731470 ↗
13. High efficiency and stable dye-sensitized solar cells with an organic chromophore featuring a binary pi-conjugated spacer10.1039/b822325d ↗
14. Tuning the energy level of organic sensitizers for high-performance dye-sensitized solar cells10.1021/jp809319x ↗
15. Energy levels, charge injection, charge recombination and dye regeneration dynamics for donor-acceptor [small pi]-conjugated organic dyes in mesoscopic TiO2 sensitized solar cells10.1039/c1ee01060c ↗
16. Engineering of push-pull thiophene dyes to enhance light absorption and modulate charge recombination in mesoscopic solar cells10.1002/adfm.201202562 ↗
17. Hydrophobic, highly conductive ambient-temperature molten salts10.1021/ic951325x ↗
18. An alternative efficient redox couple for the dye-sensitized solar cell system10.1002/chem.200204577 ↗
19. Enhance the performance of dye-sensitized solar cells by Co-grafting amphiphilic sensitizer and hexadecylmalonic acid on TiO2 nanocrystals10.1021/jp0365965 ↗
20. The factors influencing nonlinear characteristics of the short-circuit current in dye-sensitized solar cells investigated by a numerical model10.1002/cphc.201300061 ↗
21. How the nature of triphenylamine-polyene dyes in dye-sensitized solar cells affects the open-circuit voltage and electron lifetimes10.1021/la902897z ↗
22. Control of dark current in photoelectrochemical (TiO2/I--I3-) and dye-sensitized solar cells10.1039/b505718c ↗
23. Modeling and interpretation of electrical impedance spectra of dye solar cells operated under open-circuit conditions10.1016/S0013-4686(02)00444-9 ↗
24. Comparison of electrochemical impedance spectroscopy between illumination and dark conditions10.1246/cl.2011.890 ↗
25. Characterization of nanostructured hybrid and organic solar cells by impedance spectroscopy10.1039/c0cp02249g ↗
26. Theory of the impedance of electron diffusion and recombination in a thin layer10.1021/jp011941g ↗
27. Determination of parameters of electron transport in dye-sensitized solar cells using electrochemical impedance spectroscopy10.1021/jp061693u ↗
28. Energetic factors governing injection, regeneration and recombination in dye solar cells with phthalocyanine sensitizers10.1039/c0ee00185f ↗
29. Chemical capacitance of nanostructured semiconductors: its origin and significance for nanocomposite solar cells10.1039/b310907k ↗
30. Lithium-modulated conduction band edge shifts and charge-transfer dynamics in dye-sensitized solar cells based on a dicyanamide ionic liquid10.1021/la200156m ↗
31. Quantification of the effects of recombination and injection in the performance of dye-sensitized solar cells based on N-Substituted carbazole dyes10.1021/jp1055842 ↗
32. Simulation of steady-state characteristics of dye-sensitized solar cells and the interpretation of the diffusion length10.1021/jz900297b ↗
33. Structure/function relationships in dyes for solar energy conversion: a two-atom change in dye structure and the mechanism for its effect on cell voltage10.1021/ja806869x ↗
34. Interfacial electron-transfer kinetics in metal-free organic dye-sensitized solar cells: combined effects of molecular structure of dyes and electrolytes10.1021/ja803534u ↗
35. Organic dyes incorporating bis-hexapropyltruxeneamino moiety for efficient dye-sensitized solar cells10.1021/jp107439d ↗
36. Critical interfaces in organic solar cells and their influence on the open-circuit voltage10.1021/ar900139v ↗
37. Simulation and measurement of complete dye sensitised solar cells: including the influence of trapping, electrolyte, oxidised dyes and light intensity on steady state and transient device behaviour10.1039/c0cp01554g ↗
38. Influence of the electrolyte cation in organic dye-sensitized solar cells: lithium versus dimethylimidazolium10.1039/c0ee00223b ↗