Transfer from trap emission to band-edge one in water-soluble CdS nanocrystals

2013 ◽  
Vol 394 ◽  
pp. 55-62 ◽  
Author(s):  
Jing Yang ◽  
Da-Wei Deng ◽  
Jun-Sheng Yu
Keyword(s):  
Water Soluble ◽  
Band Edge ◽  
Cds Nanocrystals ◽  
Trap Emission

Direct synthesis of water soluble CuS and CdS nanocrystals with hydrophilic glucuronic and thioglycolic acids

2012 ◽  
Vol 47 (12) ◽  
pp. 4392-4397 ◽  
Author(s):  
Swikisani M.M. Nelwamondo ◽  
Makwena J. Moloto ◽  
Rui W. Krause ◽  
Nosipho Moloto
Keyword(s):  
Direct Synthesis ◽  
Water Soluble ◽  
Cds Nanocrystals

Preparation and characterization of water-soluble CdS nanocrystals by surface modification of ethylene diamine

2005 ◽  
Vol 59 (8-9) ◽  
pp. 1024-1027 ◽  
Author(s):  
Huixiang Tang ◽  
Mi Yan ◽  
Hui Zhang ◽  
Mingzhe Xia ◽  
Deren Yang
Keyword(s):  
Surface Modification ◽  
Water Soluble ◽  
Ethylene Diamine ◽  
Cds Nanocrystals

Structural and optical properties of CdS nanocrystals grown in water-soluble diblock copolymer

2010 ◽  
Vol 7 (2) ◽  
pp. 423-426 ◽  
Author(s):  
M. Celalettin Baykul ◽  
Hilal Rüzgar ◽  
Emine Arman ◽  
Yasemin Baş ◽  
Vural Bütün
Keyword(s):  
Optical Properties ◽  
Diblock Copolymer ◽  
Water Soluble ◽  
Structural And Optical Properties ◽  
Cds Nanocrystals

Synthesis, structural and optical properties of water-soluble Mn-doped CdS nanocrystals

2011 ◽  
Vol 6 (4) ◽  
pp. 257 ◽  
Author(s):  
Hui Zhai ◽  
Lixin Cao ◽  
Ge Su ◽  
Wei Liu ◽  
Bohua Dong
Keyword(s):  
Optical Properties ◽  
Water Soluble ◽  
Structural And Optical Properties ◽  
Cds Nanocrystals ◽  
Mn Doped

Investigation of Factors Induced the Non-Intrinsic Optical Properties for Water-Soluble CdSe Semiconductor Quantum Dots

2010 ◽  
Vol 663-665 ◽  
pp. 437-440
Author(s):  
Heng Kang Qiu ◽  
Yue Shen ◽  
Lin Jun Wang ◽  
Jian Cheng Zhang ◽  
Kai Feng Qin
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Photoelectron Spectroscopy ◽  
Semiconductor Quantum Dots ◽  
Water Soluble ◽  
Nano Particles ◽  
Crystal Nucleation ◽  
Band Edge ◽  
Molar Ratio ◽  
X Ray

For the purpose of investigating the factors induced the non-band-edge excitation optical properties of water-soluble CdSe semiconductor quantum dots (QDs), the initial molar ratio of Cd and Se(or Cd/Se), the temperature of crystal nucleation and growing, the time of the growth etc. are systematically studied in the fabricated process. The properties of the as-prepared nano-particles (NPs) have been characterized by ultraviolet-visible absorption spectra (UV-Vis), photoluminescence (PL) spectroscopy, X-ray powder diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), and X-ray photoelectron spectroscopy (XPS). The measured results show that it is possible to exist surface trapping, impurities and other defect energy states in the products with the non-band-edge excitation PL properties, and all the characteristics are involved with the different synthetic routes and prepared techniques.

Water-soluble chiral CdSe/CdS dot/rod nanocrystals for two-photon fluorescence lifetime imaging and photodynamic therapy

Nanoscale ◽  
2019 ◽  
Vol 11 (32) ◽  
pp. 15245-15252 ◽  
Author(s):  
Tingchao He ◽  
Xin Qiu ◽  
Junzi Li ◽  
Guotao Pang ◽  
Zizi Wu ◽  
...  
Keyword(s):  
Photodynamic Therapy ◽  
Fluorescence Lifetime ◽  
Water Soluble ◽  
Multiphoton Absorption ◽  
Fluorescence Lifetime Imaging ◽  
Two Photon ◽  
Lifetime Imaging ◽  
Cds Nanocrystals ◽  
Two Photon Fluorescence ◽  
Photon Fluorescence

Water-soluble CdSe/CdS nanocrystals stabilized using cysteine molecules exhibit efficient circular dichroism and large multiphoton absorption and show applications in two-photon fluorescence lifetime imaging and photodynamic therapy.

Three-photon excited band edge and trap emission of CdS semiconductor nanocrystals

2004 ◽  
Vol 84 (22) ◽  
pp. 4472-4474 ◽  
Author(s):  
James W. M. Chon ◽  
Min Gu ◽  
Craig Bullen ◽  
Paul Mulvaney
Keyword(s):  
Semiconductor Nanocrystals ◽  
Band Edge ◽  
Excited Band ◽  
Trap Emission
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