Document Detail


Localized current injection and submicron organic light-emitting device on a pyramidal atomic force microscopy tip.
MedLine Citation:
PMID:  17979307     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
An organic light-emitting device was fabricated on a commercial atomic force microscopy (AFM) probe having a pyramidal tip by a lithography-free vacuum thermal evaporation (VTE) process. The line-of-sight molecular transport characteristic of VTE results in controlled thickness variation across the nonplanar substrate, such that localized current injection occurs at the tip region. Furthermore, the high curvature of the AFM tip vertex concentrates the electric field, causing highly localized bipolar charge injection, accompanied by photon emission from a region less than a micrometer across. This light source exhibits a range of features potentially attractive for applications such as probe-based optical microscopy, nanoscale light sensing, and chemical detection.
Authors:
Yiying Zhao; Kwang H An; Shuo Chen; Brendan O'Connor; Kevin P Pipe; Max Shtein
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2007-11-03
Journal Detail:
Title:  Nano letters     Volume:  7     ISSN:  1530-6984     ISO Abbreviation:  Nano Lett.     Publication Date:  2007 Dec 
Date Detail:
Created Date:  2007-12-12     Completed Date:  2008-03-12     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101088070     Medline TA:  Nano Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  3645-9     Citation Subset:  IM    
Affiliation:
Department of Materials Science and Engineering, Department of Mechanical Engineering, The University of Michigan, Ann Arbor, MI 48109-2125, USA.
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MeSH Terms
Descriptor/Qualifier:
Electrochemistry
Light
Metals*
Microscopy, Atomic Force / methods
Organic Chemicals*
Thermodynamics
Chemical
Reg. No./Substance:
0/Metals; 0/Organic Chemicals

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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