title: Facile synthesis of ZnS-AgInS2 solid solution nanoparticles for a color-adjustable luminophore.
abstract: Nanoparticles of ZnS-AgInS2 solid solution (ZAIS) were synthesized by the thermal decomposition of (AgIn)xZn2(1-x)(S2CN(C2H5)2)4 precursors in a hot oleylamine solution. X-ray powder diffraction analyses revealed that the resulting nanoparticle powders were not a mixture of ZnS and AgInS2 but a ZnS-AgInS2 solid solution in which the fraction of ZnS was enlarged with a decrease in the value of x, that is, an increase in the content of Zn2+ in the precursors used. The energy gap of ZAIS nanoparticles could be controlled by the composition of solid solution. Intense emission was observed at room temperature, regardless of the kind of the particles, the peak wavelength of PL being blue-shifted from 720 to 540 nm with a decrease in the value of x. The highest quantum yield of ca. 24% was obtained for nanoparticles prepared with x = 0.86, which was much higher than the quantum yields reported for I-III-VI2-based semiconductor nanoparticles, such as CuInS2 and ZnS-CuInS2 solid solution.
authors: Department of Crystalline Materials Science, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan.
authors: Tsukasa
authors: T
authors: Torimoto
authors: Tomohiro
authors: T
authors: Adachi
authors: Ken-Ichi
authors: K
authors: Okazaki
authors: Miwa
authors: M
authors: Sakuraoka
authors: Tamaki
authors: T
authors: Shibayama
authors: Bunsho
authors: B
authors: Ohtani
authors: Akihiko
authors: A
authors: Kudo
authors: Susumu
authors: S
authors: Kuwabata
mesh_terms: D003116:Color; D007204:Indium / Q000737:chemistry*; D008163:Luminescent Measurements; D053768:Metal Nanoparticles / Q000737:chemistry*; D009942:Organometallic Compounds / Q000737:chemistry*; D012834:Silver / Q000737:chemistry*; D012996:Solutions; D013440:Sulfides / Q000737:chemistry*; D014961:X-Ray Diffraction; D017967:Zinc Compounds / Q000737:chemistry*
chemical_list: D009942:Organometallic Compounds; D012996:Solutions; D013440:Sulfides; D017967:Zinc Compounds; D007204:Indium; D012834:Silver; C031238:zinc sulfide