PMID- 19338034 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20090602 LR - 20090804 IS - 1521-3765 (Electronic) IS - 0947-6539 (Linking) VI - 15 IP - 20 DP - 2009 TI - Structure-function relationships in unsymmetrical zinc phthalocyanines for dye-sensitized solar cells. PG - 5130-7 LID - 10.1002/chem.200801778 [doi] AB - A series of unsymmetrical zinc phthalocyanines bearing an anchoring carboxylic function linked to the phthalocyanine ring through different spacers were designed for dye-sensitised solar cells (DSSC). The modification of the spacer group allows not only a variable distance between the dye and the nanocrystalline TiO(2), but also a distinct orientation of the phthalocyanine on the semiconductor surface. The photovoltaic data show that the nature of the spacer group plays a significant role in the electron injection from the photo-excited dye into the nanocrystalline TiO(2) semiconductor, the recombination rates and the efficiency of the cells. The incident monochromatic photon-to-current conversion efficiency (IPCE) for phthalocyanines bearing an insulating spacer is as low as 9%, whereas for those with a conducting spacer an outstanding IPCE 80% was obtained. FAU - Cid, Juan-Jose AU - Cid JJ AD - Departamento de Quimica Organica, Universidad Autonoma de Madrid, Cantoblanco, 28049, Madrid, Spain. FAU - Garcia-Iglesias, Miguel AU - Garcia-Iglesias M FAU - Yum, Jun-Ho AU - Yum JH FAU - Forneli, Amparo AU - Forneli A FAU - Albero, Josep AU - Albero J FAU - Martinez-Ferrero, Eugenia AU - Martinez-Ferrero E FAU - Vazquez, Purificacion AU - Vazquez P FAU - Gratzel, Michael AU - Gratzel M FAU - Nazeeruddin, Mohammad K AU - Nazeeruddin MK FAU - Palomares, Emilio AU - Palomares E FAU - Torres, Tomas AU - Torres T LA - eng PT - Journal Article PL - Germany TA - Chemistry JT - Chemistry (Weinheim an der Bergstrasse, Germany) JID - 9513783 EDAT- 2009/04/02 09:00 MHDA- 2009/04/02 09:01 CRDT- 2009/04/02 09:00 PHST- 2009/04/02 09:00 [entrez] PHST- 2009/04/02 09:00 [pubmed] PHST- 2009/04/02 09:01 [medline] AID - 10.1002/chem.200801778 [doi] PST - ppublish SO - Chemistry. 2009;15(20):5130-7. doi: 10.1002/chem.200801778.