Original Research ARTICLE
“Water Borne, Perovskite Quantum Dot-Loaded, Polystyrene Latex Ink”
- 1Jilin University, China
- 2Changchun University of Technology, China
- 3China Star Optoelectronics Technology Co. Ltd, China
Quantum dot, lead halide perovskites, luminescence, water-borne ink, polystyrene
Abstract: Highly lipophilic quantum dots (QDs) of cesium lead halides were successfully embedded in polystyrene (PS) particles by deliberately controlling the swelling of the PS particles in the mixtures of the good and bad organic solvents. The resulting composite particles were readily transferred into water via simple stepwise solvent exchange, yielding water-borne, perovskite QD-based inks with outstanding structural and chemical stability in aqueous media. Little change in the photoluminescence (PL) of the QDs loaded in the polystyrene particles was visible after 1 month incubation of the composite particles in water in a broad pH range from 1 to 14, which is hardly realized otherwise thus far. Yet loading into the PS particles makes the QDs being fairly stable against polar organic solvents such as ethanol, intense light irradiation, and heat; the QD PL intensity remains little changed after the composite particles were heated at 75 oC and under irradiation of strong blue light (@365 nm) for 1 h. Furthermore, the PS matrices can effectively inhibit the exchange of halide anions between two differently-sized perovskite QDs loaded therin, thus offering great technical advantage in application of multiple perovskite QDs for multi-color display for instance in future.
Keywords: quantum dot, lead halide perovskites, Luminescence, Water-borne ink, Polystyrene
Received: 05 May 2018;
Accepted: 13 Sep 2018.
Edited by:Vladimir Lesnyak, Technische Universität Dresden, Germany
Reviewed by:Sergii Yakunin, ETH Zürich, Switzerland
Loredana Protesescu, School of Science, Massachusetts Institute of Technology, United States
Nikolai Gaponik, Technische Universität Dresden, Germany
Copyright: © 2018 huang, peng, liu, li, ma, zhang, Xie, Wang and yang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Prof. Renguo Xie, Jilin University, Changchun, China, firstname.lastname@example.org