Document Detail


Fabrication of Si/ZnS radial nanowire heterojunction arrays for white light emitting devices on Si substrates.
MedLine Citation:
PMID:  25137439     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Well separated Si/ZnS radial nanowire heterojunction based light emitting devices have been fabricated on large area substrates, by depositing n-ZnS film on p-type nano-porous Si nanowire templates. Vertically oriented porous Si nanowires on p-Si substrates have been grown by metal assisted chemical etching catalyzed using Au nanoparticles. Isolated Si nanowires with needle shaped arrays have been made by KOH treatment before ZnS deposition. Electrically driven efficient white light emission from radial heterojunction arrays has been achieved under a low forward bias condition. The observed white light emission is attributed to blue and green emission from defect related radiative transition of ZnS and Si/ZnS interface, respectively, while the red arises from porous surface of Si nanowire core. The observed white light emission from Si/ZnS nanowire heterojunction could open up the new possibility to integrate Si based optical sources on a large scale.
Authors:
Ajit Kumar Katiyar; Arun Kumar Sinha; Santanu Manna; Samit Kumar Ray
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-8-19
Journal Detail:
Title:  ACS applied materials & interfaces     Volume:  -     ISSN:  1944-8252     ISO Abbreviation:  ACS Appl Mater Interfaces     Publication Date:  2014 Aug 
Date Detail:
Created Date:  2014-8-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101504991     Medline TA:  ACS Appl Mater Interfaces     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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