Metal-free Organic Dyes for TiO2 and ZnO Dye-sensitized Solar Cells
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We report the synthesis and characterization of new metal-free organic dyes (namely B18, BTD-R, and CPTD-R) which designed with D-π-A concept to extending the light absorption region by strong conjugation group of π-linker part and applied as light harvester in dye sensitized solar cells (DSSCs). We compared the photovoltaic performance of these dyes in two different photoanodes: a standard TiO2 mesoporous photoanode and a ZnO photoanode composed of hierarchically assembled nanostructures. The results demonstrated that B18 dye has better photovoltaic properties compared to other two dyes (BTD-R and CPTD-R) and each dye has higher current density (Jsc) when applied to hierarchical ZnO nanocrystallites than the standard TiO2 mesoporous film. Transient photocurrent and photovoltage decay measurements (TCD/TVD) were applied to systematically study the charge transport and recombination kinetics in these devices, showing the electron life time (τR) of B18 dye in ZnO and TiO2 based DSSCs is higher than CPTD-R and BTD-R based DSSCs, which is consistent with the photovoltaic performances. The conversion efficiency in ZnO based DSSCs can be further boosted by 35%, when a compact ZnO blocking layer (BL) is applied to inhibit electron back reaction.
Kargeti A, Dhar R, Siddiqui S, Saleh N ACS Omega. 2024; 9(10):11471-11477.
PMID: 38496996 PMC: 10938407. DOI: 10.1021/acsomega.3c08165.
ZnO nanostructured materials for emerging solar cell applications.
Wibowo A, Marsudi M, Amal M, Ananda M, Stephanie R, Ardy H RSC Adv. 2022; 10(70):42838-42859.
PMID: 35514924 PMC: 9058181. DOI: 10.1039/d0ra07689a.
Solvothermally synthesized anatase TiO2 nanoparticles for photoanodes in dye-sensitized solar cells.
Attafi K, Nattestad A, Qutaish H, Park M, Shrestha L, Ariga K Sci Technol Adv Mater. 2021; 22(1):100-112.
PMID: 33762890 PMC: 7952064. DOI: 10.1080/14686996.2021.1873059.
Zinc phthalocyanines as light harvesters for SnO-based solar cells: a case study.
Milan R, Selopal G, Cavazzini M, Orlandi S, Boaretto R, Caramori S Sci Rep. 2020; 10(1):1176.
PMID: 31980734 PMC: 6981253. DOI: 10.1038/s41598-020-58310-1.
Arooj Q, Wilson G, Wang F Materials (Basel). 2019; 12(24).
PMID: 31817076 PMC: 6947288. DOI: 10.3390/ma12244024.