Abstract
Effective assembly of perovskite quantum dots is a huge challenge to develop high-performance optoelectronic devices with large scale integration functionality. Here, we demonstrate a facile way to fabricate one-dimensional arrays consisting of aligned perovskite quantum dots and their remarkable application as high-performance photodetectors. All inorganic perovskite CsPbX3 (X = Cl, Br, I) quantum dots, synthesized by a hot injection method, are precisely assembled into the one-dimensional arrays using a liquid bridge induced assembly strategy. Systematic studies have shown that photodetectors based on such one-dimensional CsPbI3 quantum dot arrays have excellent performance in terms of high responsivity and high detection sensitivity. It is suggested that the availability of more oxygen-rich hole trapping states on the surface of the quantum dots play an important role in the photocurrent generation. This work presents a significant step forward towards scalable self-assembly of perovskite quantum dots into one-dimensional arrays, indicating an enormous potential in manufacturing of high-performance integrated optoelectronic sensor circuitry.
Original language | English |
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Pages (from-to) | 5954-5961 |
Number of pages | 8 |
Journal | Journal of Materials Chemistry C |
Volume | 7 |
Issue number | 20 |
DOIs | |
Publication status | Published - 28 May 2019 |
Equipment
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Melbourne Centre for Nanofabrication
Sean Langelier (Manager)
Office of the Vice-Provost (Research and Research Infrastructure)Facility/equipment: Facility