Y
Yunjun Wang
Researcher at Chinese Academy of Sciences
Publications - 14
Citations - 721
Yunjun Wang is an academic researcher from Chinese Academy of Sciences. The author has contributed to research in topics: Quantum dot & Photoluminescence. The author has an hindex of 10, co-authored 14 publications receiving 454 citations.
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Journal ArticleDOI
Photoluminescence Temperature Dependence, Dynamics, and Quantum Efficiencies in Mn2+-Doped CsPbCl3 Perovskite Nanocrystals with Varied Dopant Concentration
Xi Yuan,Sihang Ji,Michael C. De Siena,Liling Fei,Zhao Zhao,Yunjun Wang,Haibo Li,Jialong Zhao,Daniel R. Gamelin +8 more
TL;DR: A series of Mn2+-doped CsPbCl3 nanocrystals (NCs) was synthesized using reaction temperature and precursor concentration, and then studied using variable-temperature photoluminescence (PL) spectroscopy as mentioned in this paper.
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High color purity ZnSe/ZnS core/shell quantum dot based blue light emitting diodes with an inverted device structure
TL;DR: In this article, an inverted light-emitting device using nontoxic ZnSe/ZnS core/shell quantum dots (QDs) as the emitter is demonstrated.
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Near-Unity Red Mn2+ Photoluminescence Quantum Yield of Doped CsPbCl3 Nanocrystals with Cd Incorporation.
Sihang Ji,Sihang Ji,Xi Yuan,Sheng Cao,Wenyu Ji,Hanzhuang Zhang,Yunjun Wang,Haibo Li,Jialong Zhao,Jialong Zhao,Bingsuo Zou +10 more
TL;DR: The temperature dependence of steady-state and time-resolved PL spectra reveals that the CdCl2 post-treatment significantly reduces the nonradiative defect states and enhances the energy transfer from host to Mn2+ ions.
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Improved Doping and Emission Efficiencies of Mn-Doped CsPbCl3 Perovskite Nanocrystals via Nickel Chloride.
Ke Xing,Xi Yuan,Yu Wang,Ji Li,Yunjun Wang,Yi Fan,Long Yuan,Kai Li,Zhijian Wu,Haibo Li,Jialong Zhao +10 more
TL;DR: The improvement in doping and emission efficiencies of Mn2+ was attributed to the enhanced formation energies of the Mn doping under Mn and Ni co-doped configuration and resulting reduction of defects/traps in Mn:CsPbCl3 NCs with incorporation of Ni2+ ions.
Journal ArticleDOI
Highly Stable Red Quantum Dot Light-Emitting Diodes with Long T95 Operation Lifetimes.
Dongqiang Liu,Sheng Cao,Siyuan Wang,Hongqin Wang,Dai Wei,Bingsuo Zou,Jialong Zhao,Yunjun Wang +7 more
TL;DR: This work reports a highly efficient, stable red QLED device by using of lithium and magnesium co-doped as well as magnesium oxide shell-coated zinc oxide nanoparticle layer as electron transport layer (ETL) to improve the charge balance in QLED.