Emerging Nanocrystal Optoelectronics of Colloidal Quantum Wells

Colloidal semiconductor nanocrystals enable enriched color conversion essential to superior lighting and displays. These colloids span different types and heterostructures of semiconductors from colloidal quantum dots to wells. In this talk, we will focus on atomically flat, tightly confined, quasi-2-dimensional colloidal quantum wells (CQWs) for use in lighting and displays. We will present record-high efficiency from their colloidal LEDs [10,11] and record-high gain coefficients from their colloidal laser media using a variety of their heterostructures and/or oriented assemblies. We will finally discuss our recent work for the use of colloidal quantum wells intimately integrated into metasurfaces to make a new class of colloidal meta-devices.

Subject Matter Level: Intermediate - Assumes basic knowledge of the topic

What You Will Learn:
• Optoelectronics of semiconductor nanocrystals
• Colloidal quantum wells
• LEDs and lasers

Who Should Attend:
• Graduate students
• Researchers
• Scientists and engineers

About the Presenter: Hilmi Volkan Demir from Bilkent University UNAM, NTU Singapore

Hilmi Volkan Demir (OPTICA Fellow, IEEE Fellow) is a professor of electrical engineering, physics and materials science at NTU Singapore. Concurrently, Dr. Demir is co-affiliated with Bilkent University, his alma mater, and UNAM–The National Nanotechnology Research Center at Bilkent. Professor Demir established the Centre of Excellence for Semiconductor Lighting and Displays, LUMINOUS! at NTU. Demir earned his PhD (2004) and MSc (2000) from Stanford University, and his BSc (1998) from Bilkent University. Demir published over 450 research articles in major scientific journals. As a PI, Demir has contributed to commercialization and licensing of over 10 enabling technologies, generating over 100 patents applications as a principle inventor. These scientific and entrepreneurship activities resulted in several important awards including Nanyang Award for Research Excellence, NRF Investigatorship Award of Singapore, EURYI Award of European Science Foundation, and TÜBİTAK Science Award.