Speaker
Description
Quantum dots, with their tunable and spectrally narrow emission, are promising candidates for use as wavelength-shifting materials in calorimetry. When integrated with conventional scintillators, they enable improved spectral matching to the peak quantum efficiency of photodetectors. Beyond this application, a novel concept known as chromatic calorimetry has recently been proposed, in which different depths of a calorimeter are engineered to emit at distinct, non-overlapping wavelengths. In this scheme, the wavelength of the emitted photon encodes the depth of interaction, providing additional information on shower development while avoiding readout complexities.
For such applications in high energy physics, it is essential to rigorously characterize the properties of candidate quantum dot materials, including absorption and emission spectra, time-resolved photoluminescence, radiation hardness, and long-term stability. To this end, we have investigated both laboratory-synthesized and commercially available quantum dots, such as CsPbBr₃, CsPbI₃ and CdSe, over periods extending up to six months, subjecting them to radiation doses up to 20 Mrad.
In this presentation, we will describe the techniques used to fabricate and incorporate quantum dots into organic and inorganic scintillators, and compare their performance across the aforementioned metrics. The results provide insight into the feasibility and optimization of quantum-dot–based materials for advanced calorimetry in high energy physics.
| Position | Research Scholar |
|---|---|
| Affiliation | Tata Institute of Fundamental Research (TIFR) Mumbai |
| Country | India |