Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/83756
Title: High-Stability, High-Efficiency Organic Monoliths Made of Oligomer Nanoparticles Wrapped in Organic Matrix
Authors: Soran-Erdem, Zeliha
Erdem, Talha
Gungor, Kivanc
Pennakalathil, Jousheed
Tuncel, Dönüs
Demir, Hilmi Volkan
Keywords: Fluorescent Monoliths
Light-emitting Diodes
Issue Date: 2016
Source: Soran-Erdem, Z., Erdem, T., Gungor, K., Pennakalathil, J., Tuncel, D., & Demir, H. V. (2016). High-Stability, High-Efficiency Organic Monoliths Made of Oligomer Nanoparticles Wrapped in Organic Matrix. ACS Nano, 10(5), 5333-5339.
Series/Report no.: ACS Nano
Abstract: Oligomer nanoparticles (OL NPs) have been considered unsuitable for solid-state lighting due to their low quantum yields and low temperature stability of their emission. Here, we address these problems by forming highly emissive and stable OL NPs solids to make them applicable in lighting. For this purpose, we incorporated OL NPs into sucrose matrix and then prepared their all-organic monoliths. We show that wrapping the OL NPs in sucrose significantly increases their quantum yield up to 44%, while the efficiency of their dispersion and direct solid-film remain only at ∼6%. We further showed ∼3-fold improved temperature stability of OL NP emission within these monoliths. Our experiments revealed that a physical passivation mechanism is responsible from these improvements. As a proof-of-concept demonstration, we successfully employed these high-stability, high-efficiency monoliths as color converters on a blue LED chip. Considering the improved optical features, low cost, and simplicity of the presented methodology, we believe that this study holds great promise for a ubiquitous use of organic OL NPs in lighting and possibly in other photonic applications.
URI: https://hdl.handle.net/10356/83756
http://hdl.handle.net/10220/42786
ISSN: 1936-0851
DOI: 10.1021/acsnano.6b01473
Rights: © 2016 American Chemical Society (ACS). This is the author created version of a work that has been peer reviewed and accepted for publication by ACS Nano, American Chemical Society (ACS). It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1021/acsnano.6b01473].
Fulltext Permission: open
Fulltext Availability: With Fulltext
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