000209383 001__ 209383
000209383 005__ 20180913063159.0
000209383 037__ $$aPATENT
000209383 245__ $$aDye sensitized nanostructured photovoltaic tandem cell
000209383 269__ $$a1999
000209383 260__ $$bSwed.$$c1999
000209383 336__ $$aPatents
000209383 520__ $$aThe invention provides a device for obtaining an improved efficiency in a photovoltaic, nanostructured, dye sensitized cell structure, comprising a photoactive working electrode, a counter electrode and an electrolyte arranged there-between.  The cell structure thereby forms a tandem cell in that the counter-electrode also is a photoactive electrode, whereby the photoactive working electrode and/or the photoactive electrode are built on a transparent substrate.  Furthermore, both the photoactive working electrode and the photoactive electrode are made of porous nanostructured film and the photoactive working electrode is dye sensitized with a first dye.  The first dye is selected such that the electron injection into the working electrode is so fast that the red-form of a redox-couple in the electrolyte as fast as possible replaces an injected electron.  The second dye is selected such that it has a long lived excited state.  In this case the material in the counter electrode is comprised of a semiconductor having a large band gap.  In an alternative embodiment, the working electrode is dye sensitized corresponding to the first embodiment, whereas the counter electrode is comprised of a semiconductor with a band gap having absorption in the visible and/or IR region, whereby the light absorption in this electrode is further enhanced by a dye having been adsorbed onto the surface of the electrode.
000209383 6531_ $$asolar photoelectrochem cell dye sensitized nanostructured
000209383 700__ $$aLindquist, Sten-Eric
000209383 700__ $$0248439$$aHagfeldt, Anders$$g164385
000209383 909C0 $$0252532$$pLSPM$$xU12908
000209383 909CO $$ooai:infoscience.tind.io:209383$$pSB
000209383 937__ $$aEPFL-PATENT-209383
000209383 973__ $$aOTHER$$rREVIEWED$$sPUBLISHED
000209383 980__ $$aPATENT