Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Kunio Shimura"'
Publikováno v:
Bulletin of the Chemical Society of Japan. 94(12):2880-2885
During the synthesis of CdTe quantum dots (QDs) by the hydrothermal method, a CdS shell layer is naturally formed by the thermal decomposition of thiol ligands, and CdTe/CdS core/shell QDs are produced. Herein, we investigate the selective synthesis
Publikováno v:
Zairyo-to-Kankyo. 70:150-154
Autor:
Taichi Watanabe, Tatsuya Ito, Kim Hyeon-Deuk, DaeGwi Kim, Hang-Beom Bu, Kunio Shimura, Yong-Shin Lee
Publikováno v:
Nanoscale. 12:7124-7133
Semiconductor quantum dot superlattices (QDSLs) have attracted much attention as key materials for realizing new optoelectronic devices such as solar cells with high conversion efficiency and thermoelectric elements with high electrical conductivity.
Publikováno v:
Physical Chemistry Chemical Physics. 20(17):11954-11958
We investigated the effects of surface modification on the defect-related photoluminescence (PL) band in colloidal CdS quantum dots (QDs). A size-selective photoetching process and a surface modification technique with a Cd(OH)2 layer enabled the pre
Publikováno v:
Bulletin of the Chemical Society of Japan. 90:52-58
CdTe and CdTe/CdS quantum dots (QDs) were synthesized via hydrothermal method in one-step processes just by controlling reaction time. A gradual thermal decomposition of thiol ligand N-acetyl-l-cysteine results in formation of a CdS shell on a CdTe c
Publikováno v:
Physical Review B. 96
We have systematically investigated the temperature dependence of absorption, photoluminescence (PL), and PL decay profiles in CdTe-core and CdTe/CdS type-II quantum dots (QDs). In CdTe/CdS QDs, Stokes shifts and PL decay time become larger with an i
Publikováno v:
Journal of Physics: Conference Series. 1220:012029
We investigated the size dependence of band-edge photoluminescence (PL) dynamics for CdS quantum dots (QDs). The temperature dependence of the PL-decay profiles of CdS QDs with an average diameter of 3.7–6.0 nm was measured. The PL-decay profiles b
Publikováno v:
Chemistry Letters. 44:200-202
CuInS2 (CIS) nanoparticles (NPs) were hydrothermally prepared by the reaction of Cu2+, In2+, and Na2S in the presence of N-acetyl-L-cysteine as a stabilizer. The X-ray diffraction pattern of the re...
Publikováno v:
The Journal of Physical Chemistry C. 116:5456-5459
The photoluminescence (PL) properties of self-assembled monolayers (SAMs) of CdSe and CdSe/ZnS quantum dots (QDs) were investigated. From measurements of the temperature dependence of PL spectra, it is demonstrated that the thiol group, which is a co
Publikováno v:
The Journal of Physical Chemistry C. 113:7015-7018
Thin films of colloidal CdS and ZnS−CdS alloy quantum dots (QDs) were fabricated by layer-by-layer (LBL) self-assembly to synthesize blue luminescent QD thin films. The assembly of negatively charged colloidal QDs and positively charged poly(dially