Building Materials from Colloidal Nanocrystal Arrays: Preventing Crack Formation during Ligand Removal by Controlling Structure and Solvation

Santosh Shaw; Bin Yuan; Xinchun Tian; Kyle J Miller; Bryan M Cote; Julien L Colaux; Andrea Migliori; Matthew G Panthani; Ludovico Cademartiri

doi:10.1002/adma.201601872

Building Materials from Colloidal Nanocrystal Arrays: Preventing Crack Formation during Ligand Removal by Controlling Structure and Solvation

Adv Mater. 2016 Oct;28(40):8892-8899. doi: 10.1002/adma.201601872. Epub 2016 Jun 28.

Authors

Santosh Shaw¹, Bin Yuan^{1

2}, Xinchun Tian¹, Kyle J Miller¹, Bryan M Cote², Julien L Colaux³, Andrea Migliori⁴, Matthew G Panthani², Ludovico Cademartiri^{5

6

7}

Affiliations

¹ Department of Materials Science & Engineering, Iowa State University of Science and Technology, 2220 Hoover Hall, Ames, IA, 50011, USA.
² Department of Chemical & Biological Engineering, Iowa State University of Science and Technology, Ames, IA, 50011, USA.
³ Ion Beam Center, University of Surrey, Guildford, GU2 7XH, UK.
⁴ Institute for Microelectronics and Microsystems, Consiglio Nazionale delle Ricerche, Via Gobetti 101, I-40126, Bologna, Italy.
⁵ Department of Materials Science & Engineering, Iowa State University of Science and Technology, 2220 Hoover Hall, Ames, IA, 50011, USA. lcademar@iastate.edu.
⁶ Department of Chemical & Biological Engineering, Iowa State University of Science and Technology, Ames, IA, 50011, USA. lcademar@iastate.edu.
⁷ Ames Laboratory, U.S. Department of Energy, Ames, IA, 50011, USA. lcademar@iastate.edu.

PMID: 27351073
DOI: 10.1002/adma.201601872

Abstract

Crack-free, ligand-free, phase-pure nanostructured solids, using colloidal nanocrystals as precursors, are fabricated by a scalable and facile approach. Films produced by this approach have conductivities comparable to those of bulk crystals over more than 1 cm (1.370 S cm^-1 for PbS films).

Keywords: colloidal nanocrystals; crack-free; ideal microstructure; ligand removal; self-assembly.