000208670 001__ 208670
000208670 005__ 20181203023904.0
000208670 0247_ $$2doi$$a10.1039/c5ra04020e
000208670 022__ $$a2046-2069
000208670 02470 $$2ISI$$a000353166700026
000208670 037__ $$aARTICLE
000208670 245__ $$aPhotonic design of embedded dielectric scatterers for dye sensitized solar cells
000208670 260__ $$aCambridge$$bRoyal Soc Chemistry$$c2015
000208670 269__ $$a2015
000208670 300__ $$a7
000208670 336__ $$aJournal Articles
000208670 520__ $$aEmbedded dielectric scatterers comprise an important approach for light trapping in dye-sensitized solar cells (DSCs) due to their simple fabrication process. The challenge in applying these scatterers lies in finding the optimal dimensions and concentration of the scatterers. This requires many experiments and it is often quite difficult to have a starting point for optimizing the concentration. Based on theories of light propagation in random media, we propose a simple model for DSCs with embedded silica spherical particles. Then, by full-wave optical calculations, we determine a narrow range for the concentration of silica particles that leads to the largest optical absorption in the cell. The simulation results were verified by realizing DSCs with different concentrations of silica particles. A power conversion efficiency of 8.08% in an 11 mu m-thick N719-sensitized DSC was achieved with 6 vol% embedded silica, which further increased to 9.30% by applying a white scattering layer on the rear-side of the counter electrode. The design approach, presented here, is a general approach that can be applied for other types of solar light harvesting structures with low optical absorption coefficient.
000208670 700__ $$aByranvand, Mandi Malekshahi$$uUniv Tehran, Univ Coll Sci, Sch Chem, Tehran, Iran
000208670 700__ $$0242061$$aDabirian, Ali$$g174232$$uSharif Univ Technol, Dept Phys, Tehran 14588, Iran
000208670 700__ $$aKharat, Ali Nemati$$uUniv Tehran, Univ Coll Sci, Sch Chem, Tehran, Iran
000208670 700__ $$aTaghavinia, Nima$$uSharif Univ Technol, Dept Phys, Tehran 14588, Iran
000208670 773__ $$j5$$k42$$q33098-33104$$tRsc Advances
000208670 909C0 $$0252447$$pIMT$$xU10343
000208670 909CO $$ooai:infoscience.tind.io:208670$$pSTI$$particle
000208670 937__ $$aEPFL-ARTICLE-208670
000208670 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000208670 980__ $$aARTICLE