title: Materials chemistry. Composition-matched molecular "solders" for semiconductors.
abstract: We propose a general strategy to synthesize largely unexplored soluble chalcogenidometallates of cadmium, lead, and bismuth. These compounds can be used as "solders" for semiconductors widely used in photovoltaics and thermoelectrics. The addition of solder helped to bond crystal surfaces and link nano- or mesoscale particles together. For example, CdSe nanocrystals with Na2Cd2Se3 solder was used as a soluble precursor for CdSe films with electron mobilities exceeding 300 square centimeters per volt-second. CdTe, PbTe, and Bi2Te3 powders were molded into various shapes in the presence of a small additive of composition-matched chalcogenidometallate or chalcogel, thus opening new design spaces for semiconductor technologies.
authors.affiliation: Department of Chemistry, University of Chicago, Chicago, IL 60637, USA. James Franck Institute, University of Chicago, Chicago, IL 60637, USA.
authors.forename: Dmitriy S
authors.initials: DS
authors.lastname: Dolzhnikov
authors.affiliation: Department of Chemistry, University of Chicago, Chicago, IL 60637, USA. James Franck Institute, University of Chicago, Chicago, IL 60637, USA.
authors.forename: Hao
authors.initials: H
authors.lastname: Zhang
authors.affiliation: Department of Chemistry, University of Chicago, Chicago, IL 60637, USA. James Franck Institute, University of Chicago, Chicago, IL 60637, USA.
authors.forename: Jaeyoung
authors.initials: J
authors.lastname: Jang
authors.affiliation: Department of Chemistry, University of Chicago, Chicago, IL 60637, USA. James Franck Institute, University of Chicago, Chicago, IL 60637, USA.
authors.forename: Jae Sung
authors.initials: JS
authors.lastname: Son
authors.affiliation: Department of Chemistry, University of Chicago, Chicago, IL 60637, USA. James Franck Institute, University of Chicago, Chicago, IL 60637, USA.
authors.forename: Matthew G
authors.initials: MG
authors.lastname: Panthani
authors.affiliation: Materials Research Collaborative Access Team (MRCAT) Sector 10 Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA. Department of Physics, Advanced Materials Group, Illinois Institute of Technology, Chicago, IL 60616, USA.
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Shibata
authors.affiliation: Materials Research Collaborative Access Team (MRCAT) Sector 10 Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA. Department of Physics, Advanced Materials Group, Illinois Institute of Technology, Chicago, IL 60616, USA.
authors.forename: Soma
authors.initials: S
authors.lastname: Chattopadhyay
authors.affiliation: Department of Chemistry, University of Chicago, Chicago, IL 60637, USA. James Franck Institute, University of Chicago, Chicago, IL 60637, USA. Center for Nanoscale Materials, Argonne National Laboratory, Argonne, IL 60439, USA. dvtalapin@uchicago.edu.
authors.forename: Dmitri V
authors.initials: DV
authors.lastname: Talapin