Circular dichroic photoluminescence from multilayer WS2

Kuan Eng Johnson Goh

Institute of Materials Research & Engineering, A*STAR

Kuan Eng Johnson Goh has more than 15 years’ of research experience in semiconductor nanoelectronics with more than 8 years in research leadership and management positions. His current research interest is in valleytronics and the exploitation of the valley contrast in Berry curvature for novel device applications in low power electronics and quantum information. Apart from fundamental research, he has also participated and managed industry related research projects. Currently, he is co-Programme Manager for the SERC Pharos Programme on 2D Materials (Ubiquitous Electronics), and Principal Investigator for the 2D Valleytronics Project and Spin-valley Qubits Project funded by A*STAR.


We have observed strong circular dichroic photoluminescence from exfoliated multilayer WS2 crystals containing up to 5 layers. The degree of valley polarization was shown to increase with number of layers, reaching around 0.9... [ view full abstract ]


  1. Zi-En Ooi (Institute of Materials Research & Engineering, A*STAR)
  2. Chellappan Vijila (Institute of Materials Research & Engineering, A*STAR)
  3. Christina Ai Lin Pang (Science & Engineering Research Council, A*STAR)
  4. Kuan Eng Johnson Goh (Institute of Materials Research & Engineering, A*STAR)

Topic Areas

Quantum information processing and computing , Fundamental science for quantum technologies


PS3 » Poster Session (13:30 - Friday, 7th September, Hall)

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