Bright Photoluminescence of CdTe Quantum Dots Formed in Phosponic-Oleic Acids Binary Surfactants

Abstract:

This paper reports the preparation of exceptionally high brightness CdTe quantum dots (QDs) that gives emission in the range of green to red by simply prepared them in a binary mixture of octadecyl phosphonic acid (ODPA) and oleic acid (OA) surfactants. By easy controlling the ratio between the two surfactants in the reaction, the QDs with unique emission, high -brightness and -quantum yield (QY), ca. 63, 87 and 89% for green, yellow and red QDs respectively, can be obtained. Owing to their unique PL and high QY, the CdTe QDs should find an extensive uses in the currently existing applications.

• Periodical: Materials Science Forum (Volumes 663-665)
• Pages: 25-28
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.663-665.25
• Online since: November 2010
• Authors: Aidhia Rahmi, Akrajas Ali Umar, Muhamad Mat Salleh, Burhanuddin Yeop Majlis, Munetaka Oyama
• Keywords: CdTe, Photoluminescence (PL), Quantum Dot (QD), Quantum Yield

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