Near-band-edge electroluminescence from heavy-metal-free colloidal quantum dots

Zhanao Tan, Yu Zhang, Chuang Xie, Huaipeng Su, Jie Liu, Chunfeng Zhang, Nicholas Dellas, Suzanne E. Mohney, Yongqiang Wang, Jingkang Wang, Jian Xu

Research output: Contribution to journalArticlepeer-review

174 Scopus citations

Abstract

The first observation of near-band-edge electroluminescent emission from the colloidal quantum dots (QDs) consisting of CuInS 2-ZnS alloyed (ZCIS) cores and ZnSe/ZnS double shells is reported. Bright and organic-free electroluminescence (EL) emission peaked at red (I = 623 nm), yellow (I = 594 nm), and green (I = 560 nm) wavelengths is observed from the heavy-metal-free QD light-emitting diodes (QD-LEDs). The onset voltages, luminance output uniformity, and efficiencies of the heavy-metal-free QD-LEDs are characterized.

Original languageEnglish (US)
Pages (from-to)3553-3558
Number of pages6
JournalAdvanced Materials
Volume23
Issue number31
DOIs
StatePublished - Aug 16 2011

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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