Influence of electrolyte co-additives on the performance of dye-sensitized solar cells

Stergiopoulos, T; Rozi, E; Karagianni, C-S; Falaras, P

dc.contributor.author	Stergiopoulos, T	en
dc.contributor.author	Rozi, E	en
dc.contributor.author	Karagianni, C-S	en
dc.contributor.author	Falaras, P	en
dc.date.accessioned	2014-03-01T01:35:52Z
dc.date.available	2014-03-01T01:35:52Z
dc.date.issued	2011	en
dc.identifier.issn	1931-7573	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/21225
dc.subject	Conversion Efficiency	en
dc.subject	Dye Sensitized Solar Cell	en
dc.subject	Operant Conditioning	en
dc.subject	Synergistic Effect	en
dc.subject	Ionic Liquid	en
dc.subject.classification	Nanoscience & Nanotechnology	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.classification	Physics, Applied	en
dc.subject.other	4-tert-Butylpyridine	en
dc.subject.other	Chemical additive	en
dc.subject.other	Conduction band edge	en
dc.subject.other	Dye-Sensitized solar cell	en
dc.subject.other	Electrolytic media	en
dc.subject.other	Guanidinium	en
dc.subject.other	Iodine concentration	en
dc.subject.other	Operation conditions	en
dc.subject.other	Photoelectrode	en
dc.subject.other	Photovoltaic performance	en
dc.subject.other	Power conversion efficiencies	en
dc.subject.other	Redox electrolytes	en
dc.subject.other	Synergistic effect	en
dc.subject.other	Conversion efficiency	en
dc.subject.other	Dyes	en
dc.subject.other	Electrolytes	en
dc.subject.other	Iodine	en
dc.subject.other	Ionic liquids	en
dc.subject.other	Photoelectrochemical cells	en
dc.subject.other	Solar cells	en
dc.subject.other	Solar power generation	en
dc.subject.other	Electron mobility	en
dc.subject.other	Additives	en
dc.title	Influence of electrolyte co-additives on the performance of dye-sensitized solar cells	en
heal.type	journalArticle	en
heal.identifier.primary	10.1186/1556-276X-6-307	en
heal.identifier.secondary	http://dx.doi.org/10.1186/1556-276X-6-307	en
heal.identifier.secondary	307	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	The presence of specific chemical additives in the redox electrolyte results in an efficient increase of the photovoltaic performance of dye-sensitized solar cells (DSCs). The most effective additives are 4-tert-butylpyridine (TBP), N-methylbenzimidazole (NMBI) and guanidinium thiocyanate (GuNCS) that are adsorbed onto the photoelectrode/electrolyte interface, thus shifting the semiconductor's conduction band edge and preventing recombination with triiodides. In a comparative work, we investigated in detail the action of TBP and NMBI additives in ionic liquid-based redox electrolytes with varying iodine concentrations, in order to extract the optimum additive/I2 ratio for each system. Different optimum additive/I2 ratios were determined for TBP and NMBI, despite the fact that both generally work in a similar way. Further addition of GuNCS in the optimized electrolytic media causes significant synergistic effects, the action of GuNCS being strongly influenced by the nature of the corresponding co-additive. Under the best operation conditions, power conversion efficiencies as high as 8% were obtained. © 2011 Stergiopoulos et al.	en
heal.publisher	SPRINGER	en
heal.journalName	Nanoscale Research Letters	en
dc.identifier.doi	10.1186/1556-276X-6-307	en
dc.identifier.isi	ISI:000292288900003	en
dc.identifier.volume	6	en
dc.identifier.issue	1	en
dc.identifier.spage	X1	en
dc.identifier.epage	7	en