Water–ethanol solvent mixtures: a promising liquid environment for high quality positively-charged CdTe nanocrystal preparation

RSC Advances ◽  
2015 ◽  
Vol 5 (24) ◽  
pp. 18379-18383 ◽  
Author(s):  
Yuan Jiang ◽  
Shuhong Xu ◽  
Zengxia Zhao ◽  
Liang Zheng ◽  
Zhuyuan Wang ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Solvent Mixture ◽  
Solvent Mixtures ◽  
High Quality ◽  
Liquid Environment ◽  
Cdte Nanocrystals ◽  
Photoluminescence Quantum Yield ◽  
Cdte Nanocrystal ◽  
Positively Charged

In this work, the photoluminescence quantum yield of positively-charged CdTe nanocrystals was brought up to 31% in a water–ethanol solvent mixture.

Synthesis of CdTe Nanocrystals with Mercaptosuccinic Acid as Stabilizer

2008 ◽  
Vol 8 (9) ◽  
pp. 4408-4414 ◽  
Author(s):  
Chao Wang ◽  
Qiang Ma ◽  
Xingguang Su
Keyword(s):  
Hydrothermal Synthesis ◽  
Quantum Yield ◽  
Growth Process ◽  
Thioglycolic Acid ◽  
Water Soluble ◽  
Narrow Size Distribution ◽  
High Quality ◽  
Cdte Nanocrystals ◽  
Mercaptosuccinic Acid ◽  
Photoluminescence Quantum Yield

Water soluble high quality CdTe nanocrystals (NCs) with mercaptosuccinic acid (MSA) as stabilizer are prepared by refluxing and hydrothermal synthesis in this paper. The MSA stabilizer which comprises both thioglycolic acid (TGA)-like and 3-mercaptopropionic acid (MPA)-like moieties can accelerate the whole growth process of CdTe NCs comparing with TGA-like or MPA-like stabilizer. It takes only 5 min and 2 hours to obtain green emitting (luminescence maximum at 526 nm) and red emitting (luminescence maximum at ∼650 nm) from CdTe NCs, respectively. In this study, the influences of the ratios of precursors and temperature on CdTe NCs synthesis were studied in detail, and the stable CdTe NCs with high photoluminescence quantum yield and narrow size distribution can be obtained under optimal condition by both routes. The luminescence quantum yield of the green-yellow emitting CdTe NCs obtained in this study can reach 75.2%.

In situ synthesis of blue-emitting bromide-based perovskite nanoplatelets towards unity quantum efficiency and ultrahigh stability

2021 ◽  
Vol 9 (16) ◽  
pp. 5535-5543
Author(s):  
Hao Huang ◽  
Weiren Zhao ◽  
Huanxin Yang ◽  
Xiaoli Zhang ◽  
Jinnan Su ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Quantum Efficiency ◽  
In Situ Synthesis ◽  
Cross Linking ◽  
High Quality ◽  
Photoluminescence Quantum Yield

In situ cross-linking passivation strategy for high-quality perovskite nanoplatelets with unity photoluminescence quantum yield.

scholarly journals Photoluminescent Properties of CdTe Nanocrystals in Colloidal Solutions and Polymer Films

2016 ◽  
Vol 17 (1) ◽  
pp. 60-64
Author(s):  
S.I. Budzulyak ◽  
V.M. Yermakov ◽  
O.A. Kapush ◽  
D.V. Korbutyak ◽  
V.М. Tomashyk ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Aqueous Solutions ◽  
Vinyl Acetate ◽  
Polymer Films ◽  
Matrix Material ◽  
Colloidal Solutions ◽  
Acrylate Copolymer ◽  
Cdte Nanocrystals ◽  
Photoluminescence Quantum Yield ◽  
The Matrix

Using stabilizers and promoters we have obtained colloidal CdTe nanocrystals (NCs) in aqueous solutions. Incorporation of the CdTe NCs into polymer films has been fulfilled subsequently. It is shown that the use of vinyl acetate-acrylate copolymer as the matrix material for CdTe NC incorporation from colloidal solutions allows to get stable and nontoxic nanoheterogeneous film structures, which are characterized by satisfactory values of the photoluminescence quantum yield. Photoluminescence characteristics of the studied materials have been analyzed.

scholarly journals Engineering Sr-doping for enabling long-term stable FAPb1−xSrxI3 quantum dots with 100% photoluminescence quantum yield

2021 ◽  
Vol 9 (5) ◽  
pp. 1555-1566
Author(s):  
Andrés F. Gualdrón-Reyes ◽  
David F. Macias-Pinilla ◽  
Sofia Masi ◽  
Carlos Echeverría-Arrondo ◽  
Said Agouram ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Yield ◽  
Toxic Metals ◽  
Environmentally Friendly ◽  
Photoluminescence Quantum Yield ◽  
Improved Performance ◽  
Pb Substitution

The Pb substitution in quantum dots (PQDs) with lesser toxic metals has been widely searched to be environmentally friendly, and be of comparable or improved performance compared to the lead-perovskite.

Near-Unity Photoluminescence Quantum Yield and Highly Suppressed Blinking in a Toxic-Metal-Free Quantum Dot

2021 ◽  
Vol 12 (5) ◽  
pp. 1426-1431
Author(s):  
Swarnali Ghosh ◽  
Saptarshi Mandal ◽  
Soumen Mukherjee ◽  
Chayan K. De ◽  
Tridib Samanta ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Quantum Dot ◽  
Toxic Metal ◽  
Metal Free ◽  
Photoluminescence Quantum Yield

Poly(Vinylidene Fluoride)-Passivated CsPbBr3 Perovskite Quantum Dots with Near-Unity Photoluminescence Quantum Yield and Superior Stability

2021 ◽  
Author(s):  
Lin Yang ◽  
Bowen Fu ◽  
Xu Li ◽  
Hao Chen ◽  
Lili Li
Keyword(s):  
Quantum Dots ◽  
Quantum Yield ◽  
Vinylidene Fluoride ◽  
Excellent Performance ◽  
Inorganic Perovskite ◽  
Photoluminescence Quantum Yield ◽  
Poly Vinylidene Fluoride ◽  
Perovskite Quantum Dots ◽  
Optoelectronic Applications ◽  
Pl Quenching

All inorganic perovskite quantum dots (QDs) have received great attention owing to their excellent performance in optoelectronic applications. However, they often suffer from the defect-related photoluminescence (PL) quenching and phase...

Room temperature synthesis of Sn2+ doped highly luminescent CsPbBr3 quantum dots for high CRI white light-emitting diodes

Nanoscale ◽  
2021 ◽  
Author(s):  
Dongdong Yan ◽  
Qionghua Mo ◽  
Shuangyi Zhao ◽  
Wensi Cai ◽  
Zhigang Zang
Keyword(s):  
Quantum Dots ◽  
Quantum Yield ◽  
White Light ◽  
Room Temperature ◽  
Temperature Synthesis ◽  
Light Emitting ◽  
Photoluminescence Quantum Yield ◽  
Hot Injection ◽  
White Light Emitting Diodes ◽  
Cspbbr3 Quantum Dots

With a high photoluminescence quantum yield (PLQY) being able to exceed 90% for those prepared by hot injection method, CsPbBr3 quantum dots (QDs) have attracted intensive attentions for white light-emitting...

scholarly journals Air stable and highly efficient Bi3+-doped Cs2SnCl6 for blue light-emitting diodes

RSC Advances ◽  
2021 ◽  
Vol 11 (42) ◽  
pp. 26415-26420
Author(s):  
Yue Yao ◽  
Si-Wei Zhang ◽  
Zijian Liu ◽  
Chun-Yun Wang ◽  
Ping Liu ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Blue Light ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Color Coordinates ◽  
Blue Led ◽  
Highly Efficient ◽  
Photoluminescence Quantum Yield ◽  
Long Life

A Bi3+-doped Cs2SnCl6 exhibits photoluminescence at around 456 nm and a photoluminescence quantum yield of 31%. The blue LED based on the Bi3+-doped Cs2SnCl6 phosphor exhibits a long life of 120 hours and a CIE color coordinates of (0.14, 0.11).

Sign in / Sign up

Export Citation Format

Share Document