| Structural, optical, and electrical properties of self-assembled films of PbSe nanocrystals treated with 1,2-ethanedithiol. | |
| | |
MedLine Citation:
|
PMID: 19206627 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
We describe the structural, optical, and electrical properties of high-quality films of PbSe nanocrystals fabricated by a layer-by-layer (LbL) dip-coating method that utilizes 1,2-ethanedithiol (EDT) as an insolubilizing agent. Comparative characterization of nanocrystal films made by spin-coating and by the LbL process shows that EDT quantitatively displaces oleic acid on the PbSe surface, causing a large volume loss that electronically couples the nanocrystals while severely degrading their positional and crystallographic order of the films. Field-effect transistors based on EDT-treated films are moderately conductive and ambipolar in the dark, becoming p-type and 30-60 times more conductive under 300 mW cm(-2) broadband illumination. The nanocrystal films oxidize rapidly in air to yield, after short air exposures, highly conductive p-type solids. The LbL process described here is a general strategy for producing uniform, conductive nanocrystal films for applications in optoelectronics and solar energy conversion. |
| | |
Authors:
|
Joseph M Luther; Matt Law; Qing Song; Craig L Perkins; Matthew C Beard; Arthur J Nozik |
Related Documents
:
|
9548787 - Steam-sterilizable, fluorescence lifetime-based sensing film for dissolved carbon dioxide. 6688677 - Stop and go particle transport in the peripheral airways? a model study. 23238597 - Water-gas exchange of organochlorine pesticides at lake chaohu, a large chinese lake. 17319647 - Surface studies of aminoferrocene derivatives on gold: electrochemical sensors for chem... 12843607 - Water-soluble constituents of amomum seed. 22839307 - Inhibition of listeria monocytogenes atcc 19115 on ham steak by tea bioactive compounds... |
Publication Detail:
|
Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
|
Title: ACS nano Volume: 2 ISSN: 1936-086X ISO Abbreviation: - Publication Date: 2008 Feb |
Date Detail:
|
Created Date: 2009-02-11 Completed Date: 2009-03-20 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 101313589 Medline TA: ACS Nano Country: United States |
Other Details:
|
Languages: eng Pagination: 271-80 Citation Subset: IM |
Affiliation:
|
National Renewable Energy Laboratory, Golden, Colorado 80401, USA. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Crystallization
/
methods* Electric Conductivity Electrochemistry / methods* Lead / chemistry* Light Macromolecular Substances / chemistry Materials Testing Membranes, Artificial* Mercaptoethanol / analogs & derivatives*, chemistry Molecular Conformation Nanostructures / chemistry*, ultrastructure Nanotechnology / methods* Particle Size Photochemistry / methods* Refractometry Scattering, Radiation Selenium Compounds / chemistry* Surface Properties |
| Chemical | |
Reg. No./Substance:
|
0/Macromolecular Substances; 0/Membranes, Artificial; 0/Selenium Compounds; 12069-00-0/lead selenide; 540-63-6/1,2-ethanedithiol; 60-24-2/Mercaptoethanol; 7439-92-1/Lead |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Nanostructured magnetic thin films from organometallic block copolymers: pyrolysis of self-assembled...
Next Document: Curvature dependence of viral protein structures on encapsidated nanoemulsion droplets.