000209516 001__ 209516
000209516 005__ 20190117191603.0
000209516 022__ $$a1932-7447
000209516 0247_ $$2doi$$a10.1021/jp077446n
000209516 037__ $$aARTICLE
000209516 245__ $$aImproved Photon-to-Current Conversion Efficiency with a Nanoporous p-Type NiO Electrode by the Use of a Sensitizer-Acceptor Dyad
000209516 269__ $$a2008
000209516 260__ $$c2008
000209516 336__ $$aJournal Articles
000209516 520__ $$aA perylene imide sensitizer and a covalently-linked perylene imide-naphthalene diimide dyad were prepd. and characterized by absorption and emission spectroscopies, electrochem., and spectroelectrochem. These compds. were chemisorbed on nanoporous Ni oxide electrodes and then studied by femtosecond transient absorption spectroscopy in the presence of a redox active electrolyte (I3-/I-). In both compds., upon excitation of the perylene imide unit, an electron is efficiently ejected from the valence band of NiO to the dye with an av. time const. of ∼0.5 ps. In the case of the dyad, the excess electron is shifted further onto the naphthalene diimide unit, creating a new charge sepd. state. The latter exhibits a substantial retardation of the charge recombination between the hole and the reduced mol. compared with the perylene imide sensitizer. The photo-action spectra of a sandwich dye-sensitized solar cell (DSSC) composed of NiO films and these new dyes were recorded, and the absorbed-photon to current conversion efficiency (APCE) was 3 times higher with the dyad than with the perylene imide dye. The max. APCE of ∼45% is the highest value reported for a DSSC based on a nanostructured metal oxide p-type semiconductor.
000209516 6531_ $$ananoporous nickel oxide photocathode dye sensitized solar cell
000209516 6531_ $$aperylene imide naphtalene diimide dyad sensitizer
000209516 700__ $$aMorandeira, Ana
000209516 700__ $$aFortage, Jerome
000209516 700__ $$aEdvinsson, Tomas
000209516 700__ $$aLe Pleux, Loiec
000209516 700__ $$aBlart, Errol
000209516 700__ $$aBoschloo, Gerrit
000209516 700__ $$0248439$$aHagfeldt, Anders$$g164385
000209516 700__ $$aHammarstroem, Leif
000209516 700__ $$aOdobel, Fabrice
000209516 773__ $$j112$$q1721-1728$$tJournal of Physical Chemistry C
000209516 909C0 $$0252532$$pLSPM$$xU12908
000209516 909CO $$ooai:infoscience.tind.io:209516$$pSB$$particle
000209516 937__ $$aEPFL-ARTICLE-209516
000209516 973__ $$aOTHER$$rREVIEWED$$sPUBLISHED
000209516 980__ $$aARTICLE