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Richard Henry FRIEND

Tan Chin Tuan Centennial Professor

Email : phyrhf@nus.edu.sg
Current Research and Future Direction

  • Professor Sir Richard Friend is the acknowledged pioneer and leader of the science and technology of polymer organic semiconductor devices. He already has extensive contacts with NUS, and strong research links with both the Organic Nano Device Laboratory (ONDL) and the Surface Science Laboratory (SSL), which will mature and grow to include other research teams over the coming year. Sir Richard would provide invaluable leadership to this emerging cross Faculty interdisciplinary effort to be global leader in the science and technology of organic semiconductors.

  • Conjugated Polymers:
    Development of new semiconducting polymers (with Dr. A. B. Holmes, Department of Chemistry). Characterisation of properties in semiconductor device structures, including:
    - Polymer Light-Emitting Diodes
    - Thin-Film Field-Effect Transistors
    - Photovoltaic and Photoconductive Diodes

  • Time-resolved optical spectroscopy:
    Sub-picosecond time-resolved spectroscopy, with 100fsec 'white-light' laser system, used to study formation and evolution of excitonic and polaronic electronic photoexcitations.

  • Molecular conductors and magnets:
    Investigation of charge-transfer complexes containing pi-conjugated molecules showing metallic, antiferromagnetic and ferromagnetic behaviour.


  • Organic double-gate field-effect transistors: Logic-AND operation. L.L. Chua, R.H. Friend, P.K.H. Ho, Appl. Phys. Lett. 87 (2005) 253512.

  • General observation of n-type field-effect behavior in organic semiconductors. L.L. Chua, P.K.H. Ho, Zaumseil, Chang JF, Ou ECW, Sirringhaus H, Friend RH, Nature, 434, 194 (2005).

  • High-stability ultrathin spin-on benzocyclobutene gate dielectric for polymer field-effect transistors. L.L. Chua , P.K.H. Ho, Sirringhaus H and Friend RH, Appl. Phys. Lett. 84 (2004) 3400

  • Photoluminescence of poly(p-phenylenevinylene)-silica nanocomposites: Evidence for dual emission by Frank-Condon analysis. P.K.H. Ho, J.S. Kim, N. Tessler, R.H. Friend, J. Chem. Phys. 115 (2001) 2709.

  • Molecular-scale interface engineering for polymer light-emitting diodes. P.K.H. Ho, J.S. Kim, J.H. Burroughes, H. Becker, S.F.Y. Li, T.M. Brown, F. Cacialli, R.H. Friend, Nature 404 (2000) 481.