title: A solid-state CdSe quantum dot sensitized solar cell based on a quaterthiophene as a hole transporting material.
abstract: A hybrid quantum dot sensitized solar cell (QDSC) composed of CdSe quantum dots (QDs) as light harvesters and TiO(2) and 3,3'''-didodecyl-quaterthiophene (QT12) as electron and hole conductors, respectively, has been fully processed in air. The sensitizer has been introduced into the TiO(2) nanoporous layer either by the successive ionic layer adsorption and reaction method or by attaching colloidal QDs either directly or through molecular cables (linkers). As previously observed for QDSCs based on liquid electrolytes, the efficiency depends on the way of QD attachment, the direct adsorption of QDs being the procedure yielding the best results. Thermal annealing was applied in order to enhance the device response under illumination. Remarkable open circuit potentials are attained (close to 1 V), leading to an efficiency of 0.34% (AM 1.5G) in initial tests. Although low, it ranks as one of the highest values reported for solid state QDSCs based on titanium dioxide and colloidal quantum dots.
authors.affiliation: Institut Universitari d'Electroquímica i Departament de Química Física, Universitat d'Alacant, Apartat 99, E-03080 Alacant, Spain.
authors.forename: Irene
authors.initials: I
authors.lastname: Barceló
authors.forename: José M
authors.initials: JM
authors.lastname: Campiña
authors.forename: Teresa
authors.initials: T
authors.lastname: Lana-Villarreal
authors.forename: Roberto
authors.initials: R
authors.lastname: Gómez
mesh_terms: D000327:Adsorption; D019187:Cadmium Compounds / Q000737:chemistry*; D003102:Colloids / Q000737:chemistry; D011211:Electric Power Supplies; D004579:Electron Transport; D016062:Porosity; D045663:Quantum Dots; D018036:Selenium Compounds / Q000737:chemistry*; D012993:Solar Energy; D013499:Surface Properties; D013876:Thiophenes / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry
chemical_list: D019187:Cadmium Compounds; D003102:Colloids; D018036:Selenium Compounds; D013876:Thiophenes; C009495:titanium dioxide; C058667:cadmium selenide; D014025:Titanium