000185535 001__ 185535
000185535 005__ 20181203023048.0
000185535 0247_ $$2doi$$a10.1002/chem.201202677
000185535 022__ $$a0947-6539
000185535 02470 $$2ISI$$a000313787700040
000185535 037__ $$aARTICLE
000185535 245__ $$aThe Role of p Bridges in High-Efficiency DSCs Based on Unsymmetrical Squaraines
000185535 260__ $$aWeinheim$$bWiley-Blackwell$$c2013
000185535 269__ $$a2013
000185535 300__ $$a9
000185535 336__ $$aJournal Articles
000185535 520__ $$aA series of squaraine-based sensitizers with various p bridges and anchors were prepared and examined in dye-sensitized solar cells. The carboxylic anchor group was attached onto a squaraine dye through p bridges with and without an ethynyl spacer. DFT studies indicate that the LUMO is delocalized throughout the dyes, whilst the HOMO resides on the squaraine core. The dye that incorporates a 4,4-di-n-hexyl-cyclopentadithiophene group that is directly attached onto the p bridge, JD10, exhibits the highest power conversion efficiency in a DSC; this result is attributed, in part, to the deaggregative properties that are associated with the gem-di-n-hexyl substituents, which extend above and below the p-conjugated dye plane. Dye JD10 demonstrates a power-conversion efficiency of 7.3?% for liquid-electrolyte dye-sensitized solar cells and 7.9?% for cells that are co-sensitized by another metal-free dye, D35, which substantially exceed the performance of any previously tested squaraine sensitizer. A panchromatic incident-photon-to-current-conversion efficiency curve is realized for this dye with an excellent short-circuit current of 18.0 mA?cm-2. This current is higher than that seen for other squaraine dyes, partially owing to a high molar absorptivity of >5?000?M-1?cm-1 from 400 nm to the long-wavelength onset of 724 nm for dye JD10.
000185535 6531_ $$achromophores
000185535 6531_ $$adyes
000185535 6531_ $$apigments
000185535 6531_ $$aphotovoltaic cells
000185535 6531_ $$asensitizers
000185535 6531_ $$asquaraines
000185535 700__ $$0244416$$aDelcamp, Jared H.$$g206283$$uSwiss Fed Inst Technol, Sch Basic Sci, Inst Chem Sci & Engn ISIC, LPI, CH-1015 Lausanne, Switzerland
000185535 700__ $$aShi, Yanrong$$uGeorgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA
000185535 700__ $$0244211$$aYum, Jun-Ho$$g171703$$uSwiss Fed Inst Technol, Sch Basic Sci, Inst Chem Sci & Engn ISIC, LPI, CH-1015 Lausanne, Switzerland
000185535 700__ $$aSajoto, Tissa$$uGeorgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA
000185535 700__ $$aDell'Orto, Elisa$$uSwiss Fed Inst Technol, Sch Basic Sci, Inst Chem Sci & Engn ISIC, LPI, CH-1015 Lausanne, Switzerland
000185535 700__ $$aBarlow, Stephen$$uGeorgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA
000185535 700__ $$0240422$$aNazeeruddin, Mohammad K.$$g105958$$uSwiss Fed Inst Technol, Sch Basic Sci, Inst Chem Sci & Engn ISIC, LPI, CH-1015 Lausanne, Switzerland
000185535 700__ $$aMarder, Seth R.$$uGeorgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA
000185535 700__ $$0240191$$aGraetzel, Michael$$g105292$$uSwiss Fed Inst Technol, Sch Basic Sci, Inst Chem Sci & Engn ISIC, LPI, CH-1015 Lausanne, Switzerland
000185535 773__ $$j19$$k5$$q1819-1827$$tChemistry-A European Journal
000185535 909C0 $$0252060$$pLPI$$xU10101
000185535 909CO $$ooai:infoscience.tind.io:185535$$pSB$$particle
000185535 917Z8 $$x105528
000185535 937__ $$aEPFL-ARTICLE-185535
000185535 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000185535 980__ $$aARTICLE