title: Synthesis and characterization of wurtzite-phase copper tin selenide nanocrystals.
abstract: A new wurtzite phase of copper tin selenide (CTSe) was discovered, and the resulting nanocrystals were synthesized via a facile solution-phase method. The wurtzite CTSe nanocrystals were synthesized with dodecylamine and 1-dodecanethiol as coordinating solvents and di-tert-butyl diselenide ((t)Bu(2)Se(2)) as the selenium source. Specific reaction control (i.e., a combination of 1-dodecanethiol with (t)Bu(2)Se(2)) was proven to be critical in order to obtain this new phase of CTSe, which was verified by powder X-ray diffraction and selected area electron diffraction. The wurtzite CTSe nanocrystals possess an optical and electrochemical band gap of 1.7 eV and display an electrochemical photoresponse indicative of a p-type semiconductor.
authors.affiliation: Department of Chemistry and the Center for Energy Nanoscience and Technology, University of Southern California, Los Angeles, California 90089, USA.
authors.forename: Michelle E
authors.initials: ME
authors.lastname: Norako
authors.forename: Matthew J
authors.initials: MJ
authors.lastname: Greaney
authors.forename: Richard L
authors.initials: RL
authors.lastname: Brutchey