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Title: Secondary treatment of films of colloidal quantum dots for optoelectronics and devices produced thereby

A method of forming an optoelectronic device. The method includes providing a deposition surface and contacting the deposition surface with a ligand exchange chemical and contacting the deposition surface with a quantum dot (QD) colloid. This initial process is repeated over one or more cycles to form an initial QD film on the deposition surface. The method further includes subsequently contacting the QD film with a secondary treatment chemical and optionally contacting the surface with additional QDs to form an enhanced QD layer exhibiting multiple exciton generation (MEG) upon absorption of high energy photons by the QD active layer. Devices having an enhanced QD active layer as described above are also disclosed.
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Issue Date:
OSTI Identifier:
Alliance for Sustainable Energy, LLC (Golden, CO) NREL
Patent Number(s):
Application Number:
Contract Number:
Resource Relation:
Patent File Date: 2011 Jul 20
Research Org:
National Energy Technology Lab. (NETL), Pittsburgh, PA, and Morgantown, WV (United States)
Sponsoring Org:
Country of Publication:
United States

Other works cited in this record:

Monitoring devices and processes based on transformation, destruction and conversion of nanostructures
patent-application, January 2011

Air-Stable All-Inorganic Nanocrystal Solar Cells Processed from Solution
journal, October 2005
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journal, August 2010
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  • DOI: 10.1002/adma.201001148

Quantum dot solar cells
journal, April 2002

Multiple exciton generation in semiconductor quantum dots
journal, May 2008

PbSe Nanocrystal Solids for n- and p-Channel Thin Film Field-Effect Transistors
journal, October 2005

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