Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/154993
Title: Modulating emission properties in a host–guest colloidal quantum well superlattice
Authors: Yu, Junhong
Sharma, Manoj
Wang, Yimeng
Delikanli, Savas
Baruj, Hamed Dehghanpour
Sharma, Ashma
Demir, Hilmi Volkan
Dang, Cuong
Keywords: Science::Physics
Engineering::Electrical and electronic engineering
Issue Date: 2021
Source: Yu, J., Sharma, M., Wang, Y., Delikanli, S., Baruj, H. D., Sharma, A., Demir, H. V. & Dang, C. (2021). Modulating emission properties in a host–guest colloidal quantum well superlattice. Advanced Optical Materials, 2101756-. https://dx.doi.org/10.1002/adom.202101756
Project: NRF-NRFI2016-08
NRF-CRP14-2014-03
MOE2019-T1-002-087
Journal: Advanced Optical Materials
Abstract: Self-assembly of colloidal nanocrystals into ordered superlattices is a powerful approach to enable novel collective properties which are not available in individual colloids. However, to date, it remains a major challenge to develop a practical route to modulate such collective properties for potential photonic applications. Herein, it is shown that the collective emission properties in colloidal quantum well (CQW) superlattices, including emission color and anisotropy, can be effectively modulated in a binary host–guest architecture. The experimental and theoretical results reveal that excitons of the host (i.e., the undoped CQWs) generated by photoexcitation can be controllably harvested by the guest (i.e., the Cu-doped CQWs) for light emission, owing to an exciton hopping assisted exciton trapping process. Such a nano-building block with tunable collective optical properties may enlighten novel colloidal material-based photonic applications, including optical anti-counterfeiting, next-generation liquid crystal displays, and multifunctional biological markers.
URI: https://hdl.handle.net/10356/154993
ISSN: 2195-1071
DOI: 10.1002/adom.202101756
Schools: School of Electrical and Electronic Engineering 
School of Physical and Mathematical Sciences 
Research Centres: LUMINOUS! Centre of Excellence for Semiconductor Lighting & Displays 
The Photonics Institute 
CNRS International NTU THALES Research Alliances 
Rights: This is the peer reviewed version of the following article: Yu, J., Sharma, M., Wang, Y., Delikanli, S., Baruj, H. D., Sharma, A., Demir, H. V. & Dang, C. (2021). Modulating emission properties in a host–guest colloidal quantum well superlattice. Advanced Optical Materials, 2101756-, which has been published in final form at https://doi.org/10.1002/adom.202101756. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles
SPMS Journal Articles

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