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Thiophene-fused carbazole derivative dyes for high-performance dye-sensitized solar cells
Dalian Univ Technol DUT, DUT KTH Joint Educ & Res Ctr Mol Devices, Inst Artificial Photosynth, State Key Lab Fine Chem, Dalian 116024, Peoples R China..
Dalian Univ Technol DUT, DUT KTH Joint Educ & Res Ctr Mol Devices, Inst Artificial Photosynth, State Key Lab Fine Chem, Dalian 116024, Peoples R China..
Dalian Univ Technol DUT, DUT KTH Joint Educ & Res Ctr Mol Devices, Inst Artificial Photosynth, State Key Lab Fine Chem, Dalian 116024, Peoples R China..
Dalian Univ Technol DUT, DUT KTH Joint Educ & Res Ctr Mol Devices, Inst Artificial Photosynth, State Key Lab Fine Chem, Dalian 116024, Peoples R China..
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2021 (English)In: Tetrahedron, ISSN 0040-4020, E-ISSN 1464-5416, Vol. 88, article id 132124Article in journal (Refereed) Published
Abstract [en]

Two novel dyes that are similar in chemical structure, except for different donor units, AJ301and AJ303 were synthesized, characterized and applied as sensitizers in dye-sensitized solar cells (DSSCs). Both dyes exhibited a wide absorption of visible sunlight. The introduction of fused rings on the donor unit of AJ303 presented an appropriate energy level, less recombination and longer electron lifetime to achieve a power conversion efficiency (PCE) of 10.2%, far above that achieved for AJ301 of 6.2% with a [Co(bpy)(3)](2+/3+)-based electrolyte under standard AM1.5G solar irradiation (100 mW cm(-2)). The DSSCs based on AJ303 and AJ301 with [Cu(tmby)(2)](2+/+)-based electrolyte showed a lower PCE of 8.2% and 5.4%, respectively. Therefore, the results indicated that the introduction of a fused-ring in the donor group is a meaningful synthetic strategy to improve the photovoltaic performance.

Place, publisher, year, edition, pages
Elsevier BV , 2021. Vol. 88, article id 132124
Keywords [en]
Novel carbazole derivative donor, Dye-sensitized solar cell, Efficient photovoltaics, D-pi-A-structured organic sensitizers, Cobalt electrolyte
National Category
Physical Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-295838DOI: 10.1016/j.tet.2021.132124ISI: 000652537700007Scopus ID: 2-s2.0-85106224982OAI: oai:DiVA.org:kth-295838DiVA, id: diva2:1558111
Note

QC 20210528

Available from: 2021-05-28 Created: 2021-05-28 Last updated: 2022-06-25Bibliographically approved

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Sun, Licheng

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