Up-conversion device based on quantum dots with high-conversion efficiency over 6%

Haodong Tang, Kanming Shi, Nan Zhang, Zuoliang Wen, Xiangtian Xiao, Bing Xu, Haider Butt, Zoe Pikramenou, Kai Wang*, Xiao Wei Sun

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Near infrared to visible up-conversion devices have every growing demand in a myriad of industrial sectors including photovoltaics, energy harvesting, medicine and imaging. Here we have demonstrated an up-conversion device which utilizes quantum dots for both infrared absorption and visible emission. The band structure of the device is designed and optimized with well-constructed carrier transport and blocking layers. The achieved up-conversion device exhibits an impressive conversion efficiency of over 6 %, with a high near infrared on-off ratio of over 104. The device demonstrates a potential new approach for an up-conversion device designed solely on quantum dots with high efficiency.

Original languageEnglish
Article number9063450
Pages (from-to)71041-71049
Number of pages9
JournalIEEE Access
Volume8
DOIs
Publication statusPublished - 2020

Keywords

  • NIR-visible up-conversion device
  • quantum dots
  • solution-processed

ASJC Scopus subject areas

  • General Computer Science
  • General Materials Science
  • General Engineering

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