# Understanding Facet-dependent Exciton Dynamics in Strongly Confined Perovskite Quantum Dots

> **NSF 01002526DB NSF RESEARCH & RELATED ACTIVIT** · University of Oklahoma Norman Campus (OK) · $495,371

## Abstract

Nontechnical description
Quantum light sources are essential for secure communications that utilize quantum information technologies. Colloidal halide perovskite nanocrystals are emerging as a new category of materials for cost-effective quantum light sources. To fully leverage this material in future quantum networks, it is crucial to understand and manage the light-emitting properties of these nanocrystals. Due to the small sizes of nanocrystals, their performance as controllable photon emitters greatly depends on the properties of exposed crystal facets. By employing synthetic methods that allow precise control over nanocrystal size and shape, along with facet-specific chemical defect passivation, this project will investigate the impact of the exposed crystal facets on the light-emission performance of colloidal halide perovskite nanocrystals. This project aims to enable more efficient and robust quantum emitters based on chemically synthesized nanocrystals. In addition to advanced materials science, the project includes educational activities designed to inspire students in interdisciplinary materials science and quantum technologies through hands-on experiments and the creation of new course materials.

Technical description
Colloidal lead halide perovskite nanocrystal quantum dots are promising candidates for quantum emitters due to their fast exciton radiative recombination rate and straightforward, scalable synthesis. However, the single-photon emission performan

## Key facts

- **NSF award ID:** 2444278
- **Awardee organization:** University of Oklahoma Norman Campus (OK)
- **SAM.gov UEI:** EVTSTTLCEWS5
- **PI:** Yitong Dong
- **Primary program:** 01002526DB NSF RESEARCH & RELATED ACTIVIT
- **All programs:** OFFICE OF MULTIDISCIPLINARY AC, QUANTUM INFORMATION SCIENCE, NANO NON-SOLIC SCI & ENG AWD, Nanomaterials, Optics and Photonics, EXP PROG TO STIM COMP RES
- **Estimated total:** $495,371
- **Funds obligated:** $495,371
- **Transaction type:** Standard Grant
- **Period:** 09/01/2025 → 08/31/2028

## Primary source

NSF Award Search: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2444278

## Citation

> US National Science Foundation, Award 2444278, Understanding Facet-dependent Exciton Dynamics in Strongly Confined Perovskite Quantum Dots. Retrieved via AI Analytics 2026-06-08 from https://api.ai-analytics.org/grant/nsf/2444278. Licensed CC0.

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