| Negative and positive persistent photoconductance in graphene. | |
| | |
MedLine Citation:
|
PMID: 21972980 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
Persistent photoconductance, a prolonged light-induced conducting behavior that lasts several hundred seconds, has been observed in semiconductors. Here we report persistent negative photoconductance and consecutive prominent persistent positive photoconductance in graphene. Unusually large yields of negative PC (34%) and positive PC (1652%), and remarkably long negative transient response time (several hours) were observed. Such high yields were reduced in multilayer graphene and were quenched under vacuum conditions. Two-dimensional metallic graphene strongly interacts with environment and/or substrate, causing this phenomenon, which is markedly different from that in three-dimensional semiconductors and nanoparticles. |
| | |
Authors:
|
Chandan Biswas; Fethullah Güneş; Dinh Loc Duong; Seong Chu Lim; Mun Seok Jeong; Didier Pribat; Young Hee Lee |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2011-10-5 |
Journal Detail:
|
Title: Nano letters Volume: - ISSN: 1530-6992 ISO Abbreviation: - Publication Date: 2011 Oct |
Date Detail:
|
Created Date: 2011-10-6 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 101088070 Medline TA: Nano Lett Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Chromosomal stability during ex vivo expansion of UCB CD34(+) cells.
Next Document: Interchangeable effects of gibberellic acid and temperature on embryo growth, seed germination and e...