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

Research output: Contribution to journalArticlepeer-review


  • Haodong Tang
  • Kanming Shi
  • Nan Zhang
  • Zuoliang Wen
  • Xiangtian Xiao
  • Bing Xu
  • Kai Wang
  • Xiao Wei Sun

External organisations

  • Department of Electrical and Electronic Engineering
  • South University of Science and Technology of China
  • Guangdong-Hong Kong-Macao Jt. Lab. for Photonic-Thermal-Electrical Energy Materials and Devices
  • Shenzhen Key Laboratory for Advanced Quantum Dot Displays and Lighting
  • Department of Mechanical Engineering
  • Ltd.
  • Department of Mechanical Engineering
  • The Petroleum Institute


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
Publication statusPublished - 2020


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