000184627 001__ 184627
000184627 005__ 20181203023023.0
000184627 0247_ $$2doi$$a10.1039/c2cp42959d
000184627 022__ $$a1463-9076
000184627 02470 $$2ISI$$a000311161700001
000184627 037__ $$aARTICLE
000184627 245__ $$aA selective co-sensitization approach to increase photon conversion efficiency and electron lifetime in dye-sensitized solar cells
000184627 260__ $$aCambridge$$bRoyal Society of Chemistry$$c2012
000184627 269__ $$a2012
000184627 300__ $$a5
000184627 336__ $$aJournal Articles
000184627 520__ $$aRuthenium-based C106 and organic D131 sensitizers have been judicially chosen for co-sensitization due to their complementary absorption properties and different molecular sizes. Co-sensitization yields a higher light-harvesting efficiency as well as better dye coverage to passivate the surface of TiO2. The co-sensitized devices C106 + D131 showed significant enhancement in the performance (eta = 11.1%), which is a marked improvement over baseline devices sensitized with either D131 (eta = 5.6%) or C106 (eta = 9.5%). The improved performance of the co-sensitized cell is attributed to the combined enhancement in the short circuit current, open circuit voltage, and the fill-factor of the solar cells. J(sc) is improved because of the complementary absorption spectra and favorable energy level alignments of both dyes; whereas, V-oc is improved because of the better surface coverage helping to reduce the recombination and increase the electron life time. The origins of these enhancements have been systematically studied through dye desorption, absorption spectroscopy, and intensity modulated photovoltage spectroscopy investigations.
000184627 700__ $$aNguyen, Loc H.$$uNanyang Technol Univ, Ctr Nanostruct Photosyst CNPS, Singapore 637553, Singapore
000184627 700__ $$aMulmudi, Hemant K.$$uNanyang Technol Univ, Energy Res Inst NTU ERI N, Singapore 637553, Singapore
000184627 700__ $$aSabba, Dharani$$uNanyang Technol Univ, Energy Res Inst NTU ERI N, Singapore 637553, Singapore
000184627 700__ $$aKulkarni, Sneha A.$$uNanyang Technol Univ, Energy Res Inst NTU ERI N, Singapore 637553, Singapore
000184627 700__ $$aBatabyal, Sudip K.$$uNanyang Technol Univ, Energy Res Inst NTU ERI N, Singapore 637553, Singapore
000184627 700__ $$aNonomura, Kazuteru$$uNanyang Technol Univ, Ctr Nanostruct Photosyst CNPS, Singapore 637553, Singapore
000184627 700__ $$0240191$$aGraetzel, Michael$$g105292$$uNanyang Technol Univ, Ctr Nanostruct Photosyst CNPS, Singapore 637553, Singapore
000184627 700__ $$aMhaisalkar, Subodh G.$$uNanyang Technol Univ, Ctr Nanostruct Photosyst CNPS, Singapore 637553, Singapore
000184627 773__ $$j14$$k47$$q16182-16186$$tPhysical Chemistry Chemical Physics
000184627 909C0 $$0252060$$pLPI$$xU10101
000184627 909CO $$ooai:infoscience.tind.io:184627$$pSB$$particle
000184627 917Z8 $$x105528
000184627 937__ $$aEPFL-ARTICLE-184627
000184627 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000184627 980__ $$aARTICLE