Chemically Tunable, All-Inorganic-Based White-Light Emitting 0D-1D Heterostructures
Abstract
In this study, we initially created one-dimensional (1D) Mn2+-doped ZnS (ZnS: Mn) nanowires (NWs) with a unique optical signature. Specifically, these nanostructures coupled (i) ZnS defect-related self-activated emission spanning from wavelengths of 400 nm to 500 nm with (ii) Mn2+ dopant-induced emission centered at ~580 nm. These doped ZnS nanostructures were initially fabricated for the first time via a template-based co-precipitation approach followed by a post-synthesis annealing process. We subsequently formed novel 1D - zero-dimensional (0D) heterostructures incorporating ZnS: Mn NWs and AET (2-amino-ethanethiol) - CdSe quantum dots (QDs) by assembling annealed ZnS: Mn NWs with AET- capped CdSe QDs as building blocks via a simple technique, involving physical sonication and stirring. Optical analyses of our heterostructures were consistent with charge (hole) and energy transfer-induced quenching of ZnS self-activated emission coupled with hole transfer-related quenching of Mn2+ emission by the QDs. The CdSe QD emission itself was impacted by competing charge (electron) and energy transfer processes occurring between the underlying ZnS host and the immobilized CdSe QDs. Chromaticity analysis revealed the significance of controlling both QD coverage density and Mn2+ dopant ratios in predictably influencing the observed color of our all-inorganic heterostructures. For example, white-light emitting behavior was especially prominentmore »
- Authors:
-
- State Univ. of New York (SUNY), Stony Brook, NY (United States)
- State Univ. of New York (SUNY), Stony Brook, NY (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
- Publication Date:
- Research Org.:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1389215
- Alternate Identifier(s):
- OSTI ID: 1375652
- Report Number(s):
- BNL-114071-2017-JA
Journal ID: ISSN 2195-1071; R&D Project: PM037; KC0201030
- Grant/Contract Number:
- SC0012704
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Advanced Optical Materials
- Additional Journal Information:
- Journal Volume: 5; Journal Issue: 20; Journal ID: ISSN 2195-1071
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Yue, Shiyu, Zhou, Yuchen, Zou, Shihui, Wang, Lei, Liu, Haiqing, and Wong, Stanislaus S. Chemically Tunable, All-Inorganic-Based White-Light Emitting 0D-1D Heterostructures. United States: N. p., 2017.
Web. doi:10.1002/adom.201700089.
Yue, Shiyu, Zhou, Yuchen, Zou, Shihui, Wang, Lei, Liu, Haiqing, & Wong, Stanislaus S. Chemically Tunable, All-Inorganic-Based White-Light Emitting 0D-1D Heterostructures. United States. https://doi.org/10.1002/adom.201700089
Yue, Shiyu, Zhou, Yuchen, Zou, Shihui, Wang, Lei, Liu, Haiqing, and Wong, Stanislaus S. Mon .
"Chemically Tunable, All-Inorganic-Based White-Light Emitting 0D-1D Heterostructures". United States. https://doi.org/10.1002/adom.201700089. https://www.osti.gov/servlets/purl/1389215.
@article{osti_1389215,
title = {Chemically Tunable, All-Inorganic-Based White-Light Emitting 0D-1D Heterostructures},
author = {Yue, Shiyu and Zhou, Yuchen and Zou, Shihui and Wang, Lei and Liu, Haiqing and Wong, Stanislaus S.},
abstractNote = {In this study, we initially created one-dimensional (1D) Mn2+-doped ZnS (ZnS: Mn) nanowires (NWs) with a unique optical signature. Specifically, these nanostructures coupled (i) ZnS defect-related self-activated emission spanning from wavelengths of 400 nm to 500 nm with (ii) Mn2+ dopant-induced emission centered at ~580 nm. These doped ZnS nanostructures were initially fabricated for the first time via a template-based co-precipitation approach followed by a post-synthesis annealing process. We subsequently formed novel 1D - zero-dimensional (0D) heterostructures incorporating ZnS: Mn NWs and AET (2-amino-ethanethiol) - CdSe quantum dots (QDs) by assembling annealed ZnS: Mn NWs with AET- capped CdSe QDs as building blocks via a simple technique, involving physical sonication and stirring. Optical analyses of our heterostructures were consistent with charge (hole) and energy transfer-induced quenching of ZnS self-activated emission coupled with hole transfer-related quenching of Mn2+ emission by the QDs. The CdSe QD emission itself was impacted by competing charge (electron) and energy transfer processes occurring between the underlying ZnS host and the immobilized CdSe QDs. Chromaticity analysis revealed the significance of controlling both QD coverage density and Mn2+ dopant ratios in predictably influencing the observed color of our all-inorganic heterostructures. For example, white-light emitting behavior was especially prominent in composites, simultaneously characterized by (i) a 2.22% Mn2+ doping level and (ii) a molar compositional ratio of [ZnS: Mn2+]: [AET-capped CdSe QDs]) of 1: 1.5. Moreover, using these independent chemical ‘knobs’, we have been able to reliably tune for a significant shift within our composites from ‘cold-white’ (9604 K) to ‘warm-white’ (4383 K) light emission.},
doi = {10.1002/adom.201700089},
journal = {Advanced Optical Materials},
number = 20,
volume = 5,
place = {United States},
year = {2017},
month = {8}
}
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