Transparent light-emitting diodes using InP based alloy-cored multishell quantum dots

Yohan Kim, Se Min Kim, Tonino Greco, Christine Ippen, Armin Wedel, Jungwon Kang, Yong Hoon Kim, Min Suk Oh, Chul Jong Han, Jiwan Kim

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

InP/ZnSe/ZnS muitishell colloidal quantum dots (QDs) with high quantum yield were prepared by convenient heating-up method for a light emission layer of transparent QD light-emitting diodes (QD-LEDs). The synthesized InP/ZnSe/ZnS multishell QDs exhibited an emission peak at 545 nm for clear green color with a full-width at half-maximum (FWHM) of 50 nm, and photoluminescent quantum yield (QY) of 40 %. Using a Ca/Ag cathode, the whole QD-LED device was semi-transparent and the maximum luminance and current efficiency reach 400 cd/m 2, 0.80 cd/A.

Original languageEnglish
Title of host publicationTechnical Digest - 25th International Vacuum Nanoelectronics Conference, IVNC 2012Om
Pages224-225
Number of pages2
DOIs
StatePublished - 2012
Externally publishedYes
Event25th International Vacuum Nanoelectronics Conference, IVNC 2012 - Jeju, Korea, Republic of
Duration: 9 Jul 201213 Jul 2012

Publication series

NameTechnical Digest - 25th International Vacuum Nanoelectronics Conference, IVNC 2012

Conference

Conference25th International Vacuum Nanoelectronics Conference, IVNC 2012
Country/TerritoryKorea, Republic of
CityJeju
Period9/07/1213/07/12

Keywords

  • cadmium free
  • colloidal quantum dots
  • multishell
  • transparent QD-LEDs

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