High-performance all-solution-processed quantum dot near-infrared-to-visible upconversion devices for harvesting photogenerated electrons

Zhang, Nan1,2; Tang, Haodong1,3; Shi, Kanming1,4; Wang, Weigao1; Deng, Weiqiao2; Xu, Bing1,4; Wang, Kai1; Sun, Xiao Wei1

2019

10.1063/1.5124735

APPLIED PHYSICS LETTERS   影响因子和分区

0003-6951

1077-3118

All-solution-processed quantum dot (QD) upconversion devices were realized by constructing a colloidal PbS QD near-infrared (NIR ∼1 μm)-sensitive layer on the cathode side of a red CdSe quantum dot light-emitting diode (QLED). Different from conventional upconversion devices, we utilized the photogenerated electrons rather than the holes created in the NIR-sensitive layer to inject into the QLED for visible light emission. Consequently, we obtained high-performance devices with a maximum photon-to-photon conversion efficiency of 3.35% and a luminance on-off ratio of approximately 8 × 10³. The results indicate that the device structure could be used to realize low-cost and portable high-performance QD-based upconversion devices via solution-processing.
© 2019 Author(s).

EI ; SCI

英语

NI期刊

第一 ; 通讯

Ministry of Science and Technology of the People's Republic of China[2016YFB0401702] ; National Key Research and Development Program of China Stem Cell and Translational Research[] ; Natural Science Foundation of Guangdong Province[2017B030306010] ; Shenzhen Graduate School, Peking University[ZDSYS201707281632549] ; [2017KSYS007] ; National Natural Science Foundation of China[61405089]

Physics

Physics, Applied

WOS:000504304100003

American Institute of Physics Inc.

20194907787798

Cadmium compounds ; II-VI semiconductors ; IV-VI semiconductors ; Lead compounds ; Light ; Nanocrystals ; Organic light emitting diodes (OLED) ; Photons ; Selenium compounds ; Semiconductor quantum dots ; Sols

Semiconductor Devices and Integrated Circuits:714.2 ; Light/Optics:741.1 ; Nanotechnology:761 ; Chemical Products Generally:804 ; Atomic and Molecular Physics:931.3

PHYSICS

EV Compendex

1.Guangdong University Key Lab for Advanced Quantum Dot Displays and Lighting, Shenzhen Key Laboratory for Advanced Quantum Dot Displays and Lighting, Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen; 518055, China
2.Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian; 116023, China
3.Department of Mechanical Engineering, University of Birmingham, Birmingham; B152TT, United Kingdom
4.Shenzhen Planck Innovation Technologies Co. Ltd, Shenzhen; 518112, China

Zhang, Nan,Tang, Haodong,Shi, Kanming,et al. High-performance all-solution-processed quantum dot near-infrared-to-visible upconversion devices for harvesting photogenerated electrons[J]. APPLIED PHYSICS LETTERS,2019,115(22).

Zhang, Nan.,Tang, Haodong.,Shi, Kanming.,Wang, Weigao.,Deng, Weiqiao.,...&Sun, Xiao Wei.(2019).High-performance all-solution-processed quantum dot near-infrared-to-visible upconversion devices for harvesting photogenerated electrons.APPLIED PHYSICS LETTERS,115(22).

Zhang, Nan,et al."High-performance all-solution-processed quantum dot near-infrared-to-visible upconversion devices for harvesting photogenerated electrons".APPLIED PHYSICS LETTERS 115.22(2019).