Mn2+ and Cu2+-doped ZnS quantum dots stabilized by 
N-(2-carboxyethyl)chitosans

Yu. Privar; A. Nazirov; A. Pestov; E. Modin; A. Mironenko; S. Bratskaya

doi:10.1117/12.2315173

4 January 2019 Mn²⁺ and Cu²⁺-doped ZnS quantum dots stabilized by N-(2-carboxyethyl)chitosans

Yu. Privar, A. Nazirov, A. Pestov, E. Modin, A. Mironenko, S. Bratskaya

Proceedings Volume 11024, Asia-Pacific Conference on Fundamental Problems of Opto- and Microelectronics 2017; 110240C (2019) https://doi.org/10.1117/12.2315173
Event: Asia-Pacific Conference on Fundamental Problems of Opto- and Microelectronics 2017, 2017, Taipei, Taiwan

Abstract

Here, we report a green synthesis of ZnS and Mn²⁺ and Cu²⁺-doped ZnS quantum dots (QDs) stabilized with polyampholyte chitosan derivatives – N-(2-carboxyethyl)chitosans (CEC) varying in the degree of substitution (DS). It has been shown that the fabricated ZnS nanoparticles have spherical shapes and low polydispersity. The average size determined by means of transmission electron microscopy was 2.2±0.2nm and 3.6±0.6nm for CEC with DS 0.7 and 1.0, respectively. ZnS QDs showed only one sharp emission peak in the UV range (~370 nm) related to the sulfur vacancies. Photoluminecent spectra of ZnS doped with Mn²⁺ and Cu²⁺ showed emission peaks at 599 nm and 383-395 nm, respectively. A significant increase of the luminescence intensity was observed for Zn:CuS QDs incubated at 80°C. The metal:S ratio is slightly higher than the stoichiometric-favored one for formation of brighter Zn:MnS QDs.

Citation Download Citation

Yu. Privar, A. Nazirov, A. Pestov, E. Modin, A. Mironenko, and S. Bratskaya "Mn²⁺ and Cu²⁺-doped ZnS quantum dots stabilized by N-(2-carboxyethyl)chitosans", Proc. SPIE 11024, Asia-Pacific Conference on Fundamental Problems of Opto- and Microelectronics 2017, 110240C (4 January 2019); https://doi.org/10.1117/12.2315173

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available