Mn-doped nanocrystals in light-emitting diodes: energy-transfer to obtain electroluminescence from quantum dots

TitleMn-doped nanocrystals in light-emitting diodes: energy-transfer to obtain electroluminescence from quantum dots
Publication TypeJournal Article
Year of Publication2010
AuthorsRath, AKumar, Bhaumik, S, Pal, AJ
JournalApplied Physics Letters
Volume97
Issue11
PaginationArticle number: 113502
Date PublishedSEP
Abstract

We fabricatelight-emitting diodes(LEDs) based on Mn-doped ZnSnanocrystals along with hole-transporting bis(3-methylphenyl)--diphenyl-benzidine (TPD). With Mn-doping, ZnSnanostructures exhibit a strong photoluminescence. The LEDs exhibit electroluminescence(EL) from Mn-doped ZnSquantum dots and TPD. In order to open up channels for energy-transfer from TPD to quantum dots and to achieve EL from only the nanoparticles, we grow core-shell nanoparticles with Mn-doped ZnS in the core and CdS as the shell layer. Excitons formed in TPD can now transfer their energy directly to the shell-layer to yield EL from only the nanoparticles.

DOI10.1063/1.3489099
Funding Agency

Council of Scientific & Industrial Research (CSIR) - India

Type of Journal (Indian or Foreign)Foreign
Impact Factor (IF)3.820
Divison category: 
Physical and Materials Chemistry