scholarly journals Simulation of the luminescence spectrum of CdSe quantum dots

2013 ◽  
Vol 16 (4) ◽  
pp. 61-67
Author(s):  
Cuong Chi Huynh ◽  
Luan Nguyen Thanh Huynh ◽  
Vinh Quang Lam ◽  
Dat Thanh Huynh
Keyword(s):  
Quantum Dots ◽  
Room Temperature ◽  
Surface States ◽  
Thiol Group ◽  
Experimental Investigations ◽  
Cdse Quantum Dots ◽  
Nano Particle ◽  
Small Quantum ◽  
Organic Capping ◽  
Matlab Programming

CdSe quantum dots were prepared via a colloidal route using an organic capping agent consist thiol group (SH). We explicitly calculated the exciton binding energy and we incorporate the exciton contribution then combined it with quantum confinement model and surface states to see its effect on photoluminescence. The results obtained by using MATLAB programming. Calculations took place at room temperature on small quantum dots (1 - 5 nm). In conclusion, our results are quite new and it effect some of the feature that has quite close correspondence with the experimental. The results are also in conformity with other theoretical and experimental investigations. This study shows the applications of photoluminescence spectrum in determination the size of nano particle, distribution of size and surface energy level of CdSe quantum dots.

scholarly journals Erratum: “Narrow luminescence lines from self-assembled CdSe quantum dots at room temperature” [Appl. Phys. Lett. 78, 297 (2001)]

2001 ◽  
Vol 78 (23) ◽  
pp. 3749-3749
Author(s):  
Z. H. Zheng ◽  
K. Okamoto ◽  
H. C. Ko ◽  
Y. Kawakami ◽  
Sg. Fujita
Keyword(s):  
Quantum Dots ◽  
Room Temperature ◽  
Cdse Quantum Dots ◽  
Self Assembled

scholarly journals CdSe Quantum Dots Sensitized Mesoporous TiO2Solar Cells with CuSCN as Solid-State Electrolyte

2011 ◽  
Vol 2011 ◽  
pp. 1-5 ◽  
Author(s):  
Guanbi Chen ◽  
Lei Wang ◽  
Yu Zou ◽  
Xia Sheng ◽  
Hongjuan Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Solid State ◽  
Barrier Layer ◽  
Open Circuit Voltage ◽  
Open Circuit ◽  
Cdse Quantum Dots ◽  
Solid State Electrolyte ◽  
Capping Agents ◽  
Organic Capping

Mesoporous TiO2is functionalized by 3-mercaptopropyl trimethyoxysilane (MPTMS) to anchor CdSe quantum dots (QDs). The resulting TiO2/CdSe is combined with solid-state electrolyte (CuSCN) to form solar cells. It is found that the efficiency of electron injection from QDs to TiO2can be improved owing to the substitution of the long chains of organic capping agents at the surface of QDs with MPTMS. The hydrolyzate of MPTMS forms an insulating barrier layer to reduce the recombination at the TiO2/CdSe interface, leading to the increase of open-circuit voltage (Voc).

Vapour Sensitivity of InP Surface Quantum Dots

2014 ◽  
Vol 605 ◽  
pp. 177-180 ◽  
Author(s):  
Roberta de Angelis ◽  
Mauro Casalboni ◽  
Liliana D’Amico ◽  
Fabio de Matteis ◽  
Fariba Hatami ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Room Temperature ◽  
Near Infrared ◽  
Surface Recombination ◽  
Surface States ◽  
Infrared Emission ◽  
Polar Solvents ◽  
Solvent Type ◽  
Near Infrared Emission ◽  
Inp Surface

We studied the effect of solvent vapours on the photoluminescent emission of self-assembled InP surface quantum dots (SQDs). Their room temperature near infrared emission undergoes a fully reversible intensity enhancement when the dots were exposed to vapours of polar solvents since polar molecules are likely to be adsorbed onto intrinsic surface states and thus reducing non radiative surface recombination. The shape and position of the emission band does not change. The observed effect is dependent on solvent type and concentration with linear law over a limited concentration range.

Room temperature linker free growth of CdSe quantum dots on mesoporous TiO2: solar cell application

2015 ◽  
Vol 41 (3) ◽  
pp. 3940-3946 ◽  
Author(s):  
Dipak B. Salunkhe ◽  
Deepak P. Dubal ◽  
Jaydeep V. Sali ◽  
Babasaheb R. Sankapal
Keyword(s):  
Quantum Dots ◽  
Solar Cell ◽  
Room Temperature ◽  
Mesoporous Tio2 ◽  
Cdse Quantum Dots ◽  
Solar Cell Application ◽  
Free Growth

Modulation of fluorescence radiation for ZnCdS/CdSe quantum dots by graphene at room temperature

2020 ◽  
Vol 526 ◽  
pp. 146598
Author(s):  
Dongwen Gao ◽  
Li Wang ◽  
Xueqiong Su ◽  
Yong Pan ◽  
Shufeng Li ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Room Temperature ◽  
Cdse Quantum Dots ◽  
Fluorescence Radiation

scholarly journals Visible light activation of room temperature NO 2 gas sensors based on ZnO, SnO 2 and In 2 O 3 sensitized with CdSe quantum dots

2016 ◽  
Vol 618 ◽  
pp. 253-262 ◽  
Author(s):  
A.S. Chizhov ◽  
M.N. Rumyantseva ◽  
R.B. Vasiliev ◽  
D.G. Filatova ◽  
K.A. Drozdov ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Visible Light ◽  
Gas Sensors ◽  
Room Temperature ◽  
Cdse Quantum Dots ◽  
Light Activation ◽  
Visible Light Activation
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