Nanocrystal flash memory fabricated with protein-mediated assembly

For the first time, we demonstrate that a chaperonin protein lattice can be used as a template to assemble nanocrystal arrays for flash memory fabrication. This provides a brand new approach that can incorporate different types of nanocrystals from a colloidal suspension for flash memory fabrication...

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Bibliographic Details
Published inIEEE InternationalElectron Devices Meeting, 2005. IEDM Technical Digest pp. 174 - 177
Main Authors Shan Tang, Chuanbin Mao, Yueran Liu, Kelly, D.Q., Banerjee, S.K.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2005
Subjects
Assembly
Chemical vapor deposition
EPROM
Fabrication
Flash memory
Lattices
Nanocrystals
Nonvolatile memory
Proteins
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Summary:For the first time, we demonstrate that a chaperonin protein lattice can be used as a template to assemble nanocrystal arrays for flash memory fabrication. This provides a brand new approach that can incorporate different types of nanocrystals from a colloidal suspension for flash memory fabrication. Lead selenide (PbSe) and cobalt (Co) nanocrystal assemblies achieved through this method have a high density of 9.5 times10 11 /cm 2 and 1.6 times 10 12 /cm 2 , respectively, as well as very good distribution uniformity. Devices exhibit promising flash memory functions, with a flat band shift of 0.5V under 8V operation, endurance >10 5 cycles and retention time >10 4 seconds
ISBN:9780780392687
078039268X
ISSN:0163-1918
2156-017X
DOI:10.1109/IEDM.2005.1609298