title: Size-dependent dual emission of Cu,Mn:ZnSe QDs: Controlling both emission wavelength and intensity.
abstract: Cu,Mn:ZnSe quantum dots (QDs) of tunable size, controllable photoluminescence (PL) intensity ratio and PL range were prepared. A study of the experimental conditions confirmed that the size of Cu,Mn:ZnSe QDs is affected by the pH of the solution, the speed at which the Zn solution is injected and the reaction temperature. In general, high pH, low injection speed and high reaction temperature are optimal for preparing large QDs. Based on this knowledge, different sizes of Cu,Mn:ZnSe QDs were synthesized. Moreover, white emission Cu,Mn:ZnSe QDs were designed by controlling the experimental conditions and the feeding mole ratio of Mn:Cu.
authors.affiliation: Advanced Photonics Center, Southeast University, Nanjing, China.
authors.forename: Shuhong
authors.initials: S
authors.lastname: Xu
authors.affiliation: Advanced Photonics Center, Southeast University, Nanjing, China.
authors.forename: Han
authors.initials: H
authors.lastname: Jiang
authors.affiliation: Advanced Photonics Center, Southeast University, Nanjing, China.
authors.forename: Renjie
authors.initials: R
authors.lastname: Dong
authors.affiliation: Advanced Photonics Center, Southeast University, Nanjing, China.
authors.forename: Changgui
authors.initials: C
authors.lastname: Lv
authors.affiliation: Advanced Photonics Center, Southeast University, Nanjing, China.
authors.forename: Chunlei
authors.initials: C
authors.lastname: Wang
authors.affiliation: Advanced Photonics Center, Southeast University, Nanjing, China.
authors.forename: Yiping
authors.initials: Y
authors.lastname: Cui
mesh_terms: D003300:Copper / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D049449:Luminescence; D008345:Manganese / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D010316:Particle Size; D045663:Quantum Dots / Q000737:chemistry*; D018036:Selenium Compounds / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D013696:Temperature; D014961:X-Ray Diffraction; D017967:Zinc Compounds / Q000737:chemistry*
chemical_list: D018036:Selenium Compounds; D017967:Zinc Compounds; D008345:Manganese; D003300:Copper; C044696:zinc selenide
keywords: Cu,Mn:ZnSe; PL intensity; impurity; white emission