Research
Title : | New Facets in Perovskite Nanocrystals and their Heterostructures |
Area of research : | Chemical Sciences |
Focus area : | Nanotechnology and Materials Science |
Principal Investigator : | Dr. Narayan Pradhan, Indian Association for the Cultivation of Science, Kolkata, West Bengal (700032) |
Timeline Start Year : | 2023 |
Timeline End Year : | 2026 |
Contact info : | camnp@iacs.res.in |
Equipments : | Equipment (CCD/PMT Detector, Integrating Sphere , Source Meter, Fiber Optics Interface Software and PC modules) ( Rs.1800000.00 ) , Equipment (CCD/PMT Detector, Integrating Sphere , Source Meter, Fiber Optics Interface Software and PC modules) ( Rs.0.00 ) , Equipment (CCD/PMT Detector, Integrating Sphere , Source Meter, Fiber Optics Interface Software and PC modules) ( Rs.0.00 ) |
Details
Executive Summary : | This proposal aims to modify perovskite nanostructures to create and stabilize new facets beyond nanocubes and to form heterostructures with metals and other semiconductors for efficient charge carrier separation. The main question remains why perovskite nanostructures are limited in coupling with other materials leading to hetero-structures. Extensive experiments are planned to stabilize many other facets, allowing anisotropic growth, and forming heterostructures with metals and other semiconductors. Preliminary data on heterostructures formed with different facets of perovskites with epitaxial relations were gathered, aiming to uncover hidden stories on perovskite nanocrystals. Key approaches for creating nanocrystals other than cubes include specific ligands and surface doping, with phosphonic acid and ammonium ligands being used. Halide-rich facets will be explored for doping with other metal ions, while halide deficient facets will be targeted with ligand binding. Slowing down reaction kinetics for anisotropic growth is another goal. Single ion source generating precursors will be explored to obtain a perfect system with 11x of A, B, and X molar concentration, allowing nanocrystals from 1 nm to above 30 nm or above. Heterostructures with epitaxial binding will open new directions of research for perovskite nanostructures. |
Total Budget (INR): | 59,98,080 |
Achievements : | Equipment (CCD/PMT Detector, Integrating Sphere , Source Meter, Fiber Optics Interface Software and PC modules) ( Rs.1800000.00 ) , Equipment (CCD/PMT Detector, Integrating Sphere , Source Meter, Fiber Optics Interface Software and PC modules) ( Rs.0.00 ) , Equipment (CCD/PMT Detector, Integrating Sphere , Source Meter, Fiber Optics Interface Software and PC modules) ( Rs.0.00 ) |
Organizations involved
Implementing Agency : | Indian Association for the Cultivation of Science, Kolkata, West Bengal Funding Agency :Department of Science and Technology (DST) | Source :Department of Science and Technology (DST) | |