Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/154989
Title: Blue-emitting CdSe nanoplatelets enabled by sulfur-alloyed heterostructures for light-emitting diodes with low turn-on voltage
Authors: İzmir, Merve
Sharma, Ashma
Shendre, Sushant
Durmusoglu, Emek Goksu
Sharma, Vijay Kumar
Shabani, Farzan
Baruj, Hamed Dehghanpour
Delikanli, Savas
Sharma, Manoj
Demir, Hilmi Volkan
Keywords: Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics
Issue Date: 2022
Source: İzmir, M., Sharma, A., Shendre, S., Durmusoglu, E. G., Sharma, V. K., Shabani, F., Baruj, H. D., Delikanli, S., Sharma, M. & Demir, H. V. (2022). Blue-emitting CdSe nanoplatelets enabled by sulfur-alloyed heterostructures for light-emitting diodes with low turn-on voltage. ACS Applied Nano Materials, 5(1), 1367-1376. https://dx.doi.org/10.1021/acsanm.1c03939
Project: NRF-NRFI2016-08
MOE-RG62/20
Journal: ACS Applied Nano Materials
Abstract: Colloidal nanoplatelets (NPLs) have emerged as the last class of semiconductor nanocrystals for their potential optoelectronic applications. The heterostructures of these nanocrystals can achieve high photoluminescence quantum yield and enhanced photostability, along with color purity. Such advantages make them a promising candidate for solution-processable light-emitting diodes (LEDs). However, to date, blue-emitting CdSe nanoplatelets (NPLs) exhibit poor photoluminescence quantum yield and also typically suffer from a rolled-up morphology. To mitigate these problems in this work, we propose and demonstrate efficient alloyed 4 ML CdSe1-xSx nanoplatelets having a CdS crown with enhanced photoluminescence quantum yields (up to 60%) in the blue region (462-487 nm). We successfully used these NPLs as an electrically driven active emitter in the blue-emitting NPL-LEDs with a low turn-on voltage of ∼4 V. The Commission Internationale de L'Eclairage (CIE) coordinates of (0.23, 0.14) were obtained for these blue-emitting NPL-LEDs. These emitters could potentially open up the opportunity for full-color displays using these NPL-based blue LEDs in conjunction with the red and green ones.
URI: https://hdl.handle.net/10356/154989
ISSN: 2574-0970
DOI: 10.1021/acsanm.1c03939
Schools: School of Electrical and Electronic Engineering 
School of Materials Science and Engineering 
School of Physical and Mathematical Sciences 
Research Centres: The Photonics Institute 
LUMINOUS! Centre of Excellence for Semiconductor Lighting & Displays 
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Nano Materials, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsanm.1c03939.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles
MSE Journal Articles
SPMS Journal Articles

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