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Doping the quantum dots is one of the most emerging hot topics. In addition to the enhancement of the optical properties of the quantum dots, it also improve the chemical stability and inhibit the self quenching effect in the undoped quantum dots. In addition to that, It opened the field of using non Cadmium based quantum dots, that will be very useful for various biological applications.
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Doping the Quantum dotsAhmad Mohamed
Id:800120080
Depts.washington.edu rsc.org
Doping the quantum dotsIntroduction
Doping the quantum dot1. why we dope the quantum dot?2. Barriers that can prevent the doping process.3. Chemical synthesis of the doped quantum dots.
Quantum dots
http://pubs.acs.org/cen/news/87/i20/8720news4.html
Introduction
www.wikipedia.com
Introduction
Yi Xu. Investigation of synthesis of doped, and core/shell nanocrystals. Master of Science thesis for Master Program, Materials and Nanotechnology. Chalmers University for technology, Gotenberg, sweden, 2010.
Doping
http://quantum.ep.nctu.edu.tw/index.php?lang=e&a=4&b=2
Doping
Tran Thi Quynh Hoa , Ngo Duc The, Stephen McVitie, Nguyen Hoang Nama, Le Van Vu, Ta Dinh Canh,Nguyen Ngoc Long.Optical properties of Mn-doped ZnS semiconductor nanoclusters synthesized by a hydrothermal process. Optical Materials 33 (2011) 308–314.
Doping
Tran Thi Quynh Hoa , Ngo Duc The, Stephen McVitie, Nguyen Hoang Nama, Le Van Vu, Ta Dinh Canh,Nguyen Ngoc Long.Optical properties of Mn-doped ZnS
semiconductor nanoclusters زsynthesized by a hydrothermal process. Optical Materials 33 (2011) 308–314.
DopingFactors that affect the doping
process:
1. Thermodynamic.2. Kinetic.3. Self Purification.4. Dopant concentration.
Thermodynamic Factor:
Radius
CHRISTOPHER J TUINENGA. INDIUM, TIN, AND GALLIUM DOPED CDSE QUANTUM DOTS. ,KANSAS STATE UNIVERSITY. Manhattan, Kansas,2011.
Kinetic Factor:
Binding energy ev
CHRISTOPHER J TUINENGA. INDIUM, TIN, AND GALLIUM DOPED CDSE QUANTUM DOTS. ,KANSAS STATE UNIVERSITY. Manhattan, Kansas,2011.
Self Purification:
CHRISTOPHER J TUINENGA. INDIUM, TIN, AND GALLIUM DOPED CDSE QUANTUM DOTS. ,KANSAS STATE UNIVERSITY. Manhattan, Kansas,2011.
Dopant Concentration:
Tran Thi Quynh Hoa , Ngo Duc The, Stephen McVitie, Nguyen Hoang Nama, Le Van Vu, Ta Dinh Canh,Nguyen Ngoc Long.Optical properties of Mn-doped ZnS semiconductor nanoclusters synthesized by a hydrothermal process. Optical Materials 33 (2011) 308–314.
Chemical Synthesis:
CHRISTOPHER J TUINENGA. INDIUM, TIN, AND GALLIUM DOPED CDSE QUANTUM DOTS. ,KANSAS STATE UNIVERSITY. Manhattan, Kansas,2011.
Characterization:
Tran Thi Quynh Hoa , Ngo Duc The, Stephen McVitie, Nguyen Hoang Nama, Le Van Vu, Ta Dinh Canh,Nguyen Ngoc Long.Optical properties of Mn-doped ZnS semiconductor nanoclusters زsynthesized by a hydrothermal process. Optical Materials 33 (2011) 308–314.
References:Qi Xiao, Chong Xiao. Synthesis and photoluminescence of water-
soluble Mn: ZnS/ZnS core/shell quantum dots using nucleation-doping strategy. Optical Materials 31 (2008) 455–46.
Jun'an Liu, Xiaolei Wei, Yang Qu, Jianhua Cao, Changshui Chen, Hong Jiang. Aqueous synthesis and bio-imaging application of highly luminescent and low cytotoxicity Mn2+-doped ZnSe nanocrystals. Material letters volume 65, issue14, 31 July 2011. Pages 2139-2141.
Tran Thi Quynh Hoa, Ngo Duc The, Stephen McVitie, Nguyen Hoang
Nam, Le Van Vu, Ta Dinh Canh, Nguyen Ngoc Long. Optical properties of Mn-doped ZnS semiconductor nanoclusters synthesized by a hydrothermal process. Optical Materials 33 (2011) 308–314.
Yaping Zhang, Yuhua Shen, Xiufang Wang, Ling Zhu, Bing Han, Lanlan
Ge, Yulun Tao, Anjian Xie. Enhancement of blue fluorescence on the ZnSe quantum dots doped with transition metal ions. Materials Letters 78 (2012) 35–38.
Lu-Wen Jiang, Jing Zhou, Xing-Zhi Yang, Xiao-Niu Peng, Hai Jiang, De-Qiang Zhuo, Liang-Dong Chen, Xue-Feng Yu. Microwave-assisted synthesis of surface-passivated doped ZnSe quantum dots with enhanced fluorescence. Chemical Physics Letters 510 (2011) 135–138.
A. Franceschetti, J. M. An, and A. Zunger. Impact Ionization Can Explain Carrier Multiplication in PbSe Quantum Dots. Nano Letters (2006), Vol.6, No.10, 2191-2195.
Heesun Yang, Swadeshmukul Santra, and Paul H. Holloway. Syntheses and Applications of Mn-Doped II-VI Semiconductor Nanocrystals. Journal of Nanoscience and Nanotechnology, Vol.5, 1364–1375, 2005.
Viktor Chikan. Challenges and Prospects of Electronic Doping of Colloidal Quantum Dots: Case Study of CdSe.The Journal of Physical Chemistry Letters 2011, 2, 2783-2789.
Cristina Blanco-Andujar, Le Duc Tung and Nguyen T. K. Thanh.
Synthesis of nanoparticles for biomedical applications. Annu. Rep. Prog. Chem., Sect. A, 2010, 106, 553–568.
Xue GAO, Guangchao Tang, Yang Li, Xingguang Su. A novel optical nanoprobe for trypsin detection and inhibitor screening based on Mn-doped ZnSe quantum dots. Analytica Chimica Acta 743 (2012) 131– 136.
Oleksandr Voznyy, David Zhitomirsky, Philipp Stadler, Zhijun
Ning, Sjoerd Hoogland, and Edward H. Sargent. A Charge-Orbital Balance Picture of Doping in Colloidal Quantum Dot Solids. ACS NANO, VOL. 6, NO. 9,2012.
Tejinder Singh, T. J. Mountziaris, and Dimitrios Maroudas.
First-principles theoretical analysis of transition-metal doping of ZnSe quantum dots. J. Appl. Phys. 112, 024301 (2012).
J. Daniel Bryan and Daniel R. Gamelin. Doped Semiconductor Nanocrystals: Synthesis, Characterization, Physical Properties, and Applications. Progress in Inorganic Chemistry, 2005, vol. 54, 47-126.
Hsiang-Yun Chen, Sourav Maiti, and Dong Hee Son. Doping Location-Dependent Energy Transfer Dynamics in Mn-Doped CdS/ZnS Nanocrystals. ACS NANO, VOL.6, NO.1, 583-591, 2012.
Xue Gao, Guangchao Tang, Xingguang Su. Optical detection of organophosphorus compounds based on Mn-doped ZnSe d-dot enzymatic catalytic sensor. Biosensors and Bioelectronics 36 (2012) 75–80.
Xue Gao, Hao Zhang, Yang Li, Xingguang Su. Mn-doped ZnSe d-dots-based α-methylacyl-CoA racemase probe for human prostate cancer cell imaging. Analytical and Bioanalytical Chemistry .February 2012, Volume 402, Issue 5, pp 1871-1877.
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