Document Detail


Large, solution-processable graphene quantum dots as light absorbers for photovoltaics.
MedLine Citation:
PMID:  20377198     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Graphenes have very attractive properties for photovoltaics. Their tunable bandgap and large optical absorptivity are desirable for efficient light harvesting. Their electronic levels and interfacing with other materials for charge transfer processes can both be tuned with well-developed carbon chemistry. Graphenes have also been shown to have very large charge mobilities, which could be useful for charge collection in solar cells. In addition, they consist of elements abundant on Earth and are environmentally friendly. However, these important properties have not been taken advantage of because graphenes that are large enough to be useful for photovoltaics have extremely poor solubility and have a strong tendency to aggregate into graphite. Here we present a novel solubilization strategy for large graphene nanostructures. It has enabled us to synthesize solution-processable, black graphene quantum dots with uniform size through solution chemistry, and we show that they can be used as sensitizers for solar cells.
Authors:
Xin Yan; Xiao Cui; Binsong Li; Liang-shi Li
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Publication Detail:
Type:  Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Nano letters     Volume:  10     ISSN:  1530-6992     ISO Abbreviation:  Nano Lett.     Publication Date:  2010 May 
Date Detail:
Created Date:  2010-05-13     Completed Date:  2010-09-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101088070     Medline TA:  Nano Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1869-73     Citation Subset:  IM    
Affiliation:
Department of Chemistry, Indiana University, Bloomington, Indiana 47405, USA.
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MeSH Terms
Descriptor/Qualifier:
Absorption
Crystallization / methods*
Electric Power Supplies*
Equipment Design
Equipment Failure Analysis
Graphite / chemistry*
Light
Materials Testing
Nanostructures / chemistry*,  ultrastructure
Nanotechnology / instrumentation*
Particle Size
Quantum Dots*
Solar Energy*
Solubility
Solutions
Chemical
Reg. No./Substance:
0/Solutions; 7782-42-5/Graphite

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


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