Origin of high open-circuit voltage in solid state dye-sensitized solar cells employing polymer electrolyte
Impacte
Scholar |
Altres documents de l'autoria: Kim, Tea-Yon; Song, Donghoon; Barea, Eva M; Lee, Jung Hyun; Kim, Young Rae; Cho, Woohyung; Lee, Sungjin; Rahman, Mohammed M.; Bisquert, Juan; Kang, Yong Soo
Metadades
Mostra el registre complet de l'elementcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/2507
comunitat-uji-handle3:10234/6973
comunitat-uji-handle4:
INVESTIGACIONAquest recurs és restringit
http://dx.doi.org/10.1016/j.nanoen.2016.09.006 |
Metadades
Títol
Origin of high open-circuit voltage in solid state dye-sensitized solar cells employing polymer electrolyteAutoria
Data de publicació
2016-10Editor
ElsevierCita bibliogràfica
KIM, Tea-Yon, et al. Origin of high open-circuit voltage in solid state dye-sensitized solar cells employing polymer electrolyte. Nano Energy, 2016, vol. 28, p. 455-461.Tipus de document
info:eu-repo/semantics/articleVersió de l'editorial
http://www.sciencedirect.com/science/article/pii/S221128551630369XVersió
info:eu-repo/semantics/publishedVersionParaules clau / Matèries
Resum
Herein, the energy level alignment and electron recombination kinetics in solid state dye-sensitized solar cells (DSCs) employing a solid polymer electrolyte (SPE) have been quantitatively characterized. In order to ... [+]
Herein, the energy level alignment and electron recombination kinetics in solid state dye-sensitized solar cells (DSCs) employing a solid polymer electrolyte (SPE) have been quantitatively characterized. In order to determine the microscopic origin of the enhanced characteristics in polymer electrolytes, we carried out an extensive study of the photovoltaic properties with respect to the electrolyte type and composition, including a liquid electrolyte (LE) and various salt types and concentrations. We observed a smaller downward shift in the conduction band energy of the TiO2 layer upon contact with the SPE as well as a retarded electron recombination rate. These led to an increase in the Voc for DSCs with an SPE, which is mostly attributable to the coordinative interactions of the ethylene oxide (EO) units in poly(ethylene oxide) (PEO) and poly(ethylene glycol) dimethyl ether (PEGDME) with metallic Li+ ions and Ti atoms. Such coordinative interactions induce 1) the capture of Li+ cations in the bulk of the polymer electrolyte, thereby reducing their effective concentration and 2) the facile formation of a PEO passivation layer on top of the TiO2 layer. Therefore, it was concluded that the high Voc in solid state DSCs employing a polymer electrolyte is attributable to the coordinative properties of the EO units in PEO and PEGDME in the SPE. [-]
Publicat a
Nano Energy Volume 28, October 2016Drets d'accés
Copyright © 2017 Elsevier B.V. or its licensors or contributors. ScienceDirect ® is a registered trademark of Elsevier B.V.
http://rightsstatements.org/vocab/InC/1.0/
info:eu-repo/semantics/restrictedAccess
http://rightsstatements.org/vocab/InC/1.0/
info:eu-repo/semantics/restrictedAccess
Apareix a les col.leccions
- FCA_Articles [501]