Crystal formation involving 1-methylbenzimidazole in iodide/triiodide electrolytes for dye-sensitized solar cells
2007 (English)In: Solar Energy Materials and Solar Cells, ISSN 0927-0248, Vol. 91, no 12, 1062-1065 p.Article in journal (Refereed) Published
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.
solar cell, electrolyte, additive, crystal structure, performance, conversion, additives
IdentifiersURN: urn:nbn:se:kth:diva-16726DOI: 10.1016/j.solmat.2007.02.020ISI: 000247524700004ScopusID: 2-s2.0-34248380529OAI: oai:DiVA.org:kth-16726DiVA: diva2:334769
QC 201005252010-08-052010-08-05Bibliographically approved