CsPbBr3–Ti3C2Tx MXene QD/QD Heterojunction: Photoluminescence Quenching, Charge Transfer, and Cd Ion Sensing Application
Source abstract
Abstract
A van der Waals heterostructure between all-inorganic CsPbBr3 halide perovskite quantum dots (CPB QDs) and Ti3C2Tx MXene (MXN) QDs is realized, and the photophysics of the composite is examined. A strong quenching of the steady-state photoluminescence of the perovskite QDs is observed, which is further examined by a time-resolved photoluminescence study. It is attributed to the charge transfer from CPB to MXN QDs followed by rapid energy relaxation of hot electrons and hot holes toward the band edge, leading to their recombination with photon energy in the far-IR energy domain. It is further shown that the CPB–MXN QD/QD system acts as an excellent on–off–on photoluminescence probe for cadmium ion detection and also as an active material for photodetector application.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: MXene and MAX Phase Materials · 2D Materials and Applications · Perovskite Materials and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Physics and Centre for Energy Science, Indian Institute of Science Education and Research (IISER), Pune, Dr. Homi Bhabha Road, Pune 411008, India
Department of Physics, Savitribai Phule Pune University, Ganeshkhind Road, Pune 411008, India
Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
TCG Centres for Research and Education in Science and Technology (TCG-CREST), Research Institute for Sustainable Energy (RISE), 16th Floor, Omega, BIPL Building, Blocks EP & GP, Sector V, Salt Lake, Kolkata 700091, India
Funding
UK Research and Innovation · University Grants Commission · Department of Atomic Energy, Government of India · Science and Engineering Research Board · Department of Science and Technology, Ministry of Science and Technology
References (67)
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