| |
|
Assistant Professor CHUA LAY LAY
B.Sc. Computational Chemistry, NUS, 1995;
Engineer, then Principal Engineer, Chartered Semiconductor Manufacturing, 1995-2001;
Member of Technical Staff, Bell Laboratories, 2001-2002;
Research Associate, Cavendish Laboratory, Univ. Cambridge, 2002-2003;
Research Fellow, ONDL, Physics, NUS, 2004-2008;
Ph.D. Physics, Univ. of Cambridge
Contact Information:
|
|
Department of Chemistry, NUS
3 Science Drive 3
Singapore 117543
|
Office: S7 03-07
Tel: (65) 6516-8781
Fax: (65) 6779-1691
E-mail: chmcll@nus.edu.sg; phycll@nus.edu.sg |
|
Research Interests
I am interest in the device physics and spectroscopy of solution-processable graphene and conjugated polymers for organic semiconducting applications, with focus on:
Solution-processable graphene
Organic semiconductor devices (field-effect transistors, solar cells, light-emitting diode)
Recent Highlight
S. Wang, P-Q. Chia, L-L. Chua,* L-H. Zhao, R-Q Png, S. Sivaramakrishnan, M. Zhou, R.G-S. Goh, R.H. Friend, A.T.-S. Wee, P.K.H. Ho,* “Band-like transport in surface-functionalised highly solution-processable graphene nanosheets”, Adv. Mater. 20(2008) 3440. Highlighted by Advanced in Advances, Nature Publishing Group( Asia Materials) and Insight Frost & Sullivan.
Solution-processed graphene nanosheets obtained from sub-stoichiometric oxidation of graphite, exfoliation, in -situ functionalisation, then thermal de-oxidation showed band-like transport with activation energies <0.7 meV, high mobility >10cm2V-1s-1, and air-stable n- and p- channel operation.
Publications
 S. Wang, P-Q. Chia, L-L. Chua,* L-H. Zhao, R-Q Png, S. Sivaramakrishnan, M. Zhou, R.G-S. Goh, R.H. Friend, A.T.-S. Wee, P.K.H. Ho,* “Band-like transport in surface-functionalised highly solution-processable graphene graphene nanosheets”, Adv. Mater. 20, 3440 (2008).
L-L. Chua,* S. Wang, P-Q. Chia, , L. Chen, L-H. Zhao, W. Chen, A.T.-S. Wee, P.K.H. Ho, “Deoxidation of graphene oxide nanosheets to extended graphenites by “ unzipping” elimination”, J. Chem. Phys. 129, 114702 (2008).
P.K.H. Ho, L-L. Chua, M. Dipankar, X.Gao, D. Qi, A.T.S. Wee, J.F. Chang, R.H. Friend, “Solvent effects on chain orientation and interchain pi-interaction in conjugated polymer thin films: Direct measurements of the air and substrate interfaces by near-edge x-ray absorption spectroscopy”, Adv. Mater. 2007, 19, 215.
Sivaramakrishnan, P-J. Chia, Y.C. Yeo, L-L. Chua, P.K.H. Ho, "Controlled insulator-to-metal transformation in printable polymer composites with nanometal clusters", Nature Mater. 2007, 6, 149.
L-L. Chua, J. Zaumseil, J.F. Chang, E.C.W. Ou, P.K-H. Ho, H. Sirringhaus, R H. Friend,* "General observation of n-type field-effect behaviour in organic semiconductors", Nature 2005, 434, 194. |
|
