Curiac Christine, Rodrigues Roberta R, Watson Jonathon, Hunt Leigh Anna, Devdass Anthony, Jurss Jonah W, Hammer Nathan I, Fortenberry Ryan C, Delcamp Jared H
Department of Chemistry and Biochemistry, University of Mississippi, 322 Coulter Hall, University, MS 38655, USA.
ChemSusChem. 2021 Aug 9;14(15):3084-3096. doi: 10.1002/cssc.202100884. Epub 2021 Jun 23.
A series of iron polypyridyl redox shuttles were synthesized in the 2+ and 3+ oxidation states and paired with a series of wide optical gap organic dyes with weak aryl ether electron-donating groups. High voltage dye-sensitized solar cell (HV-DSC) devices were obtained through controlling the redox shuttle energetics and dye donor structure. The use of aryl ether donor groups, in place of commonly used aryl amines, allowed for the lowering of the dye ground-state oxidation potential which enabled challenging to oxidize redox shuttles based on Fe polypyridyl structures to be used in functional devices. By carefully designing a dye series that varies the number of alkyl chains for TiO surface protection, the recombination of electrons in TiO to the oxidized redox shuttle could be controlled, leading to HV-DSC devices of up to 1.4 V.
合成了一系列处于二价和三价氧化态的铁联吡啶氧化还原穿梭体，并将其与一系列带有弱芳基醚供电子基团的宽光学带隙有机染料配对。通过控制氧化还原穿梭体的能量学和染料供体结构，获得了高压染料敏化太阳能电池（HV-DSC）器件。使用芳基醚供体基团取代常用的芳基胺，能够降低染料基态氧化电位，从而使得基于铁联吡啶结构的具有挑战性的可氧化氧化还原穿梭体能够用于功能器件中。通过精心设计一系列改变用于TiO表面保护的烷基链数量的染料，可以控制TiO中电子与氧化态氧化还原穿梭体的复合，从而得到高达1.4 V的HV-DSC器件。
