Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Kevin Whitham"'
Publikováno v:
ACS Nano. 13:11460-11468
Periodic arrays of strongly coupled colloidal quantum dots (QDs) may enable unprecedented control of electronic band structure through manipulation of QD size, shape, composition, spacing, and assembly geometry. This includes the possibilities of pre
Publikováno v:
Chemistry of Materials. 31:912-918
Nanowire growth from metal surfaces presents several scientifically interesting and technologically important research challenges. Scientifically, many knowledge gaps remain about the fundamental m...
Publikováno v:
Chemistry of Materials. 30:54-63
The combination of self-assembly and directed attachment of colloidal nanocrystals at fluid interfaces presents a scientifically interesting and technologically important research challenge. Remarkable strides have been made in the synthesis of polyh
Autor:
Kevin Whitham, Tobias Hanrath
Publikováno v:
The Journal of Physical Chemistry Letters. 8:2623-2628
The formation of epitaxially connected quantum dot solids involves a complex interplay of interfacial assembly, surface chemistry, and irreversible-directed attachment. We describe the basic mechanism in the context of a coherent phase transition wit
Autor:
Benjamin H. Savitzky, Robert Hovden, Tobias Hanrath, Frank W. Wise, Jun Yang, Lena F. Kourkoutis, Kevin Whitham
Publikováno v:
Nano Letters. 16:5714-5718
Epitaxially connected superlattices of self-assembled colloidal quantum dots present a promising route toward exquisite control of electronic structure through precise hierarchical structuring across multiple length scales. Here, we uncover propagati
Autor:
Andrew B. Robbins, Benjamin E. Treml, Kevin Whitham, Tobias Hanrath, Michael Thompson, Detlef-M. Smilgies
Publikováno v:
ACS Nano. 9:4096-4102
As nanocrystal (NC) synthesis techniques and device architectures advance, it becomes increasingly apparent that new ways of connecting NCs with each other and their external environment are required to realize their considerable potential. Enhancing
Publikováno v:
The Journal of Physical Chemistry C. 118:3377-3385
We introduce a method to process colloidal PbSe nanocrystals (NCs) into inorganic NC thin films using chalcogenidometallate (ChaM) clusters as surface ligands, resulting in electrically coupled NC solids. NCs are first immobilized on a substrate via
Publikováno v:
Phys. Chem. Chem. Phys.. 16:25729-25733
We used a bilayer field effect transistor (FET) consisting of a thin PbS nanocrystals (NCs) film interfaced with vacuum-deposited pentacene to probe trap states in NCs. We interpret the observed threshold voltage shift in context of charge carrier tr
Publikováno v:
Nano Letters. 13:3225-3231
Confined-but-connected quantum dot solids (QDS) combine the advantages of tunable, quantum-confined energy levels with efficient charge transport through enhanced electronic interdot coupling. We report the fabrication of QDS by treating self-assembl
Publikováno v:
ACS Nano. 6:9466-9474
We create and optimize a structurally well-defined electron donor-acceptor planar heterojunction interface in which electric-field and/or photon-induced charge transfer occurs. Electric-field-induced charge transfer in the dark and exciton dissociati