Nonradiative resonance energy transfer directed from colloidal CdSe/ZnS quantum dots to epitaxial ingan/gan quantum wells for solar cells

Sedat Nizamoglu, Emre Sari, Jong Hyeob Baek, In Hwan Lee, Hilmi Volkan Demir

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

We report on Förster-type nonradiative resonance energy transfer (NRET) directed from colloidal quantum dots (QDs) to epitaxial quantum wells (QWs) with an efficiency of 69.6% at a rate of 1.527 ns-1 for potential application in III-nitride based photovoltaics. This hybrid exciton generation-collection system consists of chemically-synthesized cyan CdSe/ZnS core/shell QDs (λPL = 490 nm) intimately integrated on epitaxially-grown green InGaN/GaN QWs (λPL = 512 nm). To demonstrate directional NRET from donor QDs to acceptor QWs, we simultaneously show the decreased photoluminescence decay lifetime of dots and increased lifetime of wells in the hybrid dipole-dipole coupled system.

Original languageEnglish
Pages (from-to)178-180
Number of pages3
JournalPhysica Status Solidi - Rapid Research Letters
Volume4
Issue number7
DOIs
Publication statusPublished - 2010 Jul

Keywords

  • Energy transfer
  • Nanoscale
  • Quantum dots
  • Semiconductors
  • Solar cells

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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