Projects: Custom Search
Reference Number EP/Y029429/1
Title TOSPEL Transient operando spectroscopy of perovskite nanocrystal LEDs
Status Started
Energy Categories Energy Efficiency 5%;
Not Energy Related 95%;
Research Types Basic and strategic applied research 100%
Science and Technology Fields PHYSICAL SCIENCES AND MATHEMATICS (Chemistry) 50%;
ENGINEERING AND TECHNOLOGY (Electrical and Electronic Engineering) 50%;
UKERC Cross Cutting Characterisation Not Cross-cutting 100%
Principal Investigator Dr S D Stranks
No email address given
University of Cambridge
Award Type Standard
Funding Source EPSRC
Start Date 01 September 2023
End Date 31 August 2026
Duration 36 months
Total Grant Value £244,917
Industrial Sectors
Region East of England
Programme UKRI MSCA
Investigators Principal Investigator Dr S D Stranks , Physics, University of Cambridge (100.000%)
Web Site
Abstract Meeting the substantially growing demand for lighting with limited environmental impact relies on technological developments delivering an energy-efficient lighting system. Metal-halide perovskites have emerged as a new class of semiconductors that creates opportunities to revolutionize the way we convert electrical energy into light. Perovskite nanocrystal light-emitting diodes (LEDs) have enormous potential to be the next generation of LEDs due to their low fabrication cost, high efficiency, bandgap tunability, and high color purity. Despite the advantages of perovskite nanocrystal LEDs, the inevitable nanocrystal size distribution, shape difference, and surface states lead to the co-existence of multiple dynamic processes that influence the optoelectronic properties and the operational stability of the LEDs. This project is titled "Transient operando spectroscopy of perovskite nanocrystal LEDs" (TospeL). Novel ultrafast absorption and emission spectroscopic techniques combining periodic electrical excitations and femtosecond optical pulses will be designed and applied to perovskite nanocrystal LEDs. The applicant will join the Bawendi Group at MIT (outgoing phase) to synthesize perovskite nanocrystals and fabricate nanocrystal LEDs with desirable optical properties, which will be used for ultrafast dynamics studies using newly designed transient operando emission techniques in the Bawendi Group. For the return phase, the applicant will join the Stranks Group at University of Cambridge to design and implement transient absorption spectroscopy to investigate the interactions between excitons, carriers, traps, and spin as well as the recombination mechanisms in working LEDs. These results will give a new comprehensive understanding of LEDs photophysics and provide guidance for their further development
Publications (none)
Final Report (none)
Added to Database 16/08/23