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Crystal formation involving 1-methylbenzimidazole in iodide/triiodide electrolytes for dye-sensitized solar cells
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Inorganic Chemistry.
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Physical Chemistry.
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2007 (English)In: Solar Energy Materials and Solar Cells, ISSN 0927-0248, E-ISSN 1879-3398, Vol. 91, no 12, 1062-1065 p.Article in journal (Refereed) Published
Abstract [en]

Nitrogen heterocyclic compounds, such as N-methylbenzimidazole (MBI), are commonly used as additives to electrolytes for dye-sensitized solar cells (DSCs), but the chemical transformation of additives in electrolyte solutions remains poorly understood. Solid crystalline compound (MBI)(6)(MBI-H+)(2)(I-)(I-3(-)) (1) was isolated from different electrolytes for DSCs containing MBI as additive. The crystal structure of I was determined by single-crystal X-ray diffraction. In the crystal structure, 1 contains neutral and protonated MBI fragments; iodide and triiodide anions form infinite chains along the crystallographic a-axis. The role of the solvent and additives in the crystallization process in electrolytes is discussed.

Place, publisher, year, edition, pages
2007. Vol. 91, no 12, 1062-1065 p.
Keyword [en]
solar cell, electrolyte, additive, crystal structure, performance, conversion, additives
Identifiers
URN: urn:nbn:se:kth:diva-16726DOI: 10.1016/j.solmat.2007.02.020ISI: 000247524700004Scopus ID: 2-s2.0-34248380529OAI: oai:DiVA.org:kth-16726DiVA: diva2:334769
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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Fischer, AndreasHagfeldt, AndersBoschloo, GerritKloo, Lars A.Gorlov, Mikhail
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