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Patents, Publications List for Centre for Optoelectronics (COE)-2003-2004

January 2004 - December 2004

Patent Licensed

 1.   Chua SJ and Li BJ, High carrier injection optical waveguide switch – Suitable for 1.3 mm and 1.55 mm wavelength range for 2 inputs and 2 outputs. Issued 14th October 2003, Patent No US6,633,692 B2.

Patents Granted

1.    Chua Soo Jin, Mark Auch, Ewald Guenther, Procedure for encapsulation of electronic devices, date granted 12 Oct 04, USA Patent No. :6803245

2.   Teng JH, Chua SJ and Dong JR, Method for forming a modified semiconductor having a plurality of bandgaps. Singapore patent application No. 2002 02027-9. Date granted: 27 February 2004

Patents Filing

1.   Chua SJ, Chen Peng, Wang YaDong, Nanostructures And Method Of Making The Same, Ref 200329; filed on 31 August 2004.

2.   Teng JH, Chua SJ, Dong JR, Distributed feedback and distributed Bragg Reflector Semiconductor Lasers with dielectric grating"  Ref: 200328; filed in Singapore 4 Aug 04

 

Publications (Jan 2004 – December 2004)

International Refereed Publications

 

1.   LS Wang, S. Tripathy and SJ Chua, “Effects of periodic delta-doping on the properties of GaN:Si films grown on Si (111) substrate.” Appl. Phys. Letts., Vol. 85, No. 24, pp. 5881 – 5883, 2004

2.   M. E. Loomans, D. Z. Chi and S. J. Chua, “Monosilicide-desilicide-silicon phase equilibria in the nickel-platinum silicon and nickel-palladium-silicon systems”, Metallurgical and Materials Transactions A, Vol 35A, No 10, pp. 3053-3061, (2004)

3.   P Chen, S J Chua, Z L Miao, “Phase separation in AlGaN/GaN heterojunction grown by metalorganic chemical vapor deposition”, Journal of           Crystal Growth, Vol 273 No 1-2 pp 74-78, (2004)

4.   BJ Chen, XW Sun, BK Tay, L Ke and SJ Chua, “Improvement of efficiency and stability of polymwer light-emitting devices by modifying indium tin oxide anode with ultrthin tetrahedral amorphous carbon film”, Appl. Phys. Letts., Vol. 85, No. 12, pp   (2004)

5.    YX Jie, ATS Wee, CHA Huan, WX Sun, ZX Shen and SJ Chua, “Raman and photoluminescence properties of Ge nanocrystals in silicon oxide matrix”, Matls. Science and Engineering, vol. B107, pp. 8 – 13, (2004)

6.    BJ Li, SJ Chua, EA Fitzgerald, BS Chaudhari, S Jiang and ZG Cai, “Intelligent integration of optical power splitter with optically switchable cross-connect based multimode interference principle SiGe/Si”, Appl. Phys. Letts., Vol. 85, No. 7, pp.1119 – 1121, 2004

7.   HR Yuan, JR Dong, SJ Chua and YJ Wang, “Metalorganic vapor phase epitaxy growth of  AlGaInAs quantum dots on (100) GaAs substrate”, J. Crystal Growth, vol 270, pp. 50 -56, 2004

8.   S. K. Donthu, D. Z. Chi, S. Tripathy, A. S. Wong and S. J. Chua, Ramam scattering probe of anharmonic effects in NiSi, J. of Ramam Spectroscopy Vol 35 No 7 pp 536-540, 2004

9.   S. K. Donthu, S. Tripathy, D. Z. Chi and S. J. Chua,” Micro-Raman spectroscopic investigation of NiSi films formed on BF2+, B+ and non-implanted (100)Si substrates”, Applied Physics A: Materials Science and Process, Vol 79 No 3, pp 637-642, 2004

10. Y.F. Liew, F. R. Zhu and S.J. Chua, “Effect of organic layer combination on dark spot formation in organic light emitting devices”, Chemical Physics Letts, vol. 394, pp. 280 – 284, 2004

11. Y.F.Liew, F.R.Zhu and S.J. Chua, “Alq3-modified indium tin oxide for enhancing the efficiency and reliability of organic light emitting devices” Appl. Phys. Letts. Vol. 85, No. 19, pp. 4511 -4513, 2004

12. HR Yuan,  SJ Chua,  ZL Miao, JR Dong and YJ Wang, Growth and structural properties of thick InAs films on GaAs with low-pressure metalorganic vapor phase epitaxy, J. Crystal Growth, vol. 273, pp 63 – 67, 2004

13.  S. Tripathy, T. Htoo and S.J. Chua, “Influence of substrate misorientation on vibrational properties of In1-x-yGaxAlyAs grown on InP”, J. Vac. Sci. Technology., Vol. A22(1), pp. 111-116, (2004)

14.  YD Wang, SJ Chua, MS Sander, P Chen, S. Tripathy and CG Fonstad, “Fabrication and properties of nanoporous GaN films, Appl. Phys. Letts. Vol.8, No. 5, pp. 816 – 818, 2004

15.  C.X.Xu, X.W. Sun X.H. Zhang, L. Ke and S.J. Chua, “Photoluminescent properties of copper-doped zinc oxide nanowires”, Nanotechnology, pp. 856 -861, 2004

16.  C.X. Xu, X.W. Sun, Z.L. Dong, M.B. Yu, T.D. My, X.H. Zhang, S.J. Chua and T.J. White, “Zinc oxide nanowire and nanorod fabricated by vapor-phase”, Nanotechnology, vol. 15, issue 7, pp. 839 – 842, 2004

17.  C.K. Chia, Z.L. Miao, Y.H. Chye and S.J. Chua, “Enhanced photoluminescence intensity for InAs self-assembled quantum dots grown by MBE using ‘nucleation-augment’ method”, Appl. Phys. Letts. Vol. 85, No. 4, pp. 567 -569, 2004

18.  X.C. Wang, G.C. Lim, HY Zheng, F.L. Ng, W. Liu and S.J. Chua,”Femtosecond pulse laser ablation of sapphire in ambient air”, Appl. Surf. Sci., vol. 228, pp. 221-226, 2004

19.  K.Y Zang, LS Wang, SJ Chua and CV Thompson, “Structural analysis of metalorganic chemical vapor deposited AlN nucleation layers on Si(111)”, J. Crystal Growth, Vol. 268, 3-4, pp. 515 – 520, 2004

20.  Z.L. Miao, S.J. Chua, S. Tripathy, CK Chia, YH Chye and P Chen, “High quality InAs grown on GaAs substrate with an in-situ micro-structured buffer”, J. Crystal Growth. Vol. 268, pp18 -23, 2004

21.  C.B. Soh, S.J. Chua, H..F Lim, D.Z. Chi, S. Tripathy and W. Liu, Assignment of Deep Levels causing Yellow Luminescence in GaN, accepted for J. Appl. Phys., vol. 96, No. 3, pp. 1341 -1347, 2004

22.  C. B. Soh, W. Liu, S. J.  Chua, S. Tripathy, D. Z. Chi,” Inverted hexagonal pits formation in AllnGaN epilayer”, J. Crystal Growth,  Vol. 268, No 3-4, pp 478-483, 2004

23.  CB Soh, SJ Chua, HF Lim, DZ Chi, W Liu and S Tripathy, “Identification of deep levels in GaN associated with dislocations”, J. of Phys. : Condens. Matter, vol. 16, pp. 1 -11, 2004

24.  K. S. Low, J. H. Teng, S. J. Chua, “Simulation of 1.55 um distributed feedback semiconductor laser: investigation of dielectric grating yielding high coupling effect”, J. Crystal Growth,  Vol 268 No 3-4, pp 437-443, 1 Aug 2004

25.  C.Y. Liu, Shu Yuan, JR Dong, SJ Chua, "Temperature dependence of photoluminescence intensity from AlGaInP/GaInP multi-quantum well laser structures", J. Crystal Growth, Vol. 268, 2-3, pp. 426 -431, 2004

26.  J.R. Dong, J.H. Teng, S.J. Chua, B.C. Foo, Y.J. Wang, L.W. Zhang, H.R. Yuan. Continuous-wave operation of AlGaInP/GaInP quantum-well lasers grown by metalorganic chemical vapor deposition using tertiarybutylphosphine, J. Appl. Phys, vol. 95 (9), pp. 5252-5254, 2004

27.  J.R. Dong, X.H. Zhang, S.J. Chua, Y.J. Wang, “Photoluminescence of compressively strained AlGaInP/GaInP quantum well structures grown by metalorganic chemical vapour deposition”, J. Crystal Growth, Vol. 266, pp. 449 – 454, 2004

28.  J.R. Dong, S.J. Chua, Y.J. Wang and H.R. Yuan, “Substrate orientation dependence of In composition of AlGaInP epilayers grown by MOCVD”, J. Crystal Growth, Vol 269, pp 408-412, 2004

29.  X. H. Zhang, W. Liu, S. J. Chua, “Optical transitions in InGaN/GaN quantum wells: effects of the piezoelectric field”, J. Crystal Growth, Vol. 268 No 3-4, pp 521-526 2004

30.  X. H. Zhang, J. R. Dong, S. J. Chua, J. Zhang, Anna Yong, “Metalorganic chemical vapor deposition and spontaneous emission of self-assembled InAs quantum dots in open space and in planar microcavity”, J. Crystal Growth, Vol. 268, No 3-4, pp 420-425, 2004

31.  S. J. Xu, Q. Li, J. R. Dong and S. J. Chua, “Interpretation of anomalous temperature dependence on anti-Stokes photoluminescence at GaInP2/GaAs interface”, Applied Physics Letters Vol 84 No 13 pp 2280-2282, 29 Mar 2004

32.  HO Chaw, KL Pey, CH Tung, BC Zhang, KC Tee, G. Karunasiri and SJ Chua, Uniform void-free epitaxial CoSi2 formation on shallow-trench-isolation bounded narrow Si (100) lines by template layer stress reduction" Electrochemical and Solid-State Letts.  Vol. 7, no. 11, pp. H49 – H51, (2004)       

33.  T. Yuan, SJ Chua and YX Jin, “Calculation of the R0A product in n+-n-p and p+-p-n GaInAsSb infrared detectors”, Infrared Phys. and Tech., Vol 45, No. 3, pp 181-189, (2004)

34.  XH Zhang, W Liu, SJ Chua, “Optical transitions in InGaN/GaN quantum wells: effects ofthe piezoelectric field”, J. Crystal Growth, vol. 268, pp. 521 – 526, 2004

35.  W. Liu, S.J. Chua and X.H. Zhang, “Determination of the Direction of Piezoelectric Field in InGaN/GaN Multiple Quantum Well Structures Grown by Metal Organic Chemical Vapour Deposition” J. of Electronic Matls. Vol. 33, No. 8, pp 841 - 845 (2004)

36.  W. Liu, C. B. Soh, P. Chen, S. J. Chua, “ Characterisation of AlInGaN quaternary epilayers grown by metal organic chemical vapor deposition”, J. Crystal Growth, Vol. 268, No 3-4, pp 509-514, 2004

37. YBZheng, SJ Chua CHA Huan and ZL Miao, “Growth of InAs quantum dots on shallow spherically shaped craters prepared on GaAs (001) substrates: an extended set of vicinal surfaces”, J. Crystal Growth, Vol. 363, pp. 161 -166, 2004

38.    T.L. Song, S.J. Chua and E.A. Fitzgerald, P. Chen and S. Tripathy, “Characterisation of graded InGaN/GaN epilayers grown on sapphire”, J. Vac. Sci. Technol. A 22(2), pp 287-292, (2004)

39.  SY. Xie, SF. Yoon, SZ Wang, ZZ. Sun, P. Chen and SJ Chua, “Influence of Be on N composition in Be-doped InGaAsN grown by RF plasma-assisted molecular beam epitaxy”, J. Crystal Growth, Vol. 260, pp. 366-371, (2004)

40.   L Ke, RS Kumar, K Zhang, SJ Chua and ATS Wee, “Organic light emitting device performance improvement by inserting a thin parylene layer”, Synthetic Metals, Vol. 140, No. 2-3, pp. 295-299, (2004)

41.   L Ke, RS Kumar, K Zhang, SJ Chua and ATS Wee,”Effect of parylene layer on the performance of OLED”, Microlectronics Journal, vol. 35, No. 4, pp. 325 – 328 (2004)

42.   L. S. Wang, S. Tripathy, W. H. Sun and S. J. Chua, “Micro-Raman scattering in Si-, C-, Mg-, and Be- implanted GaN layers”, Journal of Ramam Spectroscopy, Vol 35, pp 73-77, (2004)

43.   H.W. Choi, PR Edwards, C. Liu, CW Jeon, RW Martin, IM Watson, MD Dawson, S. Tripathy and SJ Chua, “Sub-micron InGaN ring structures for high-efficiency LEDs”, Phys. Stat. Sol. (c), Vol. 1, PP. 202 -205, (2004)

44.   S.Y. Xie, S.F. Yoon, S.Z. Wang, Z. Z. Sun, P. Chen and S.J. Chua, “Influence of Be on N composition in Be-doped InGaAsN grown by RF plasma-assisted molecular beam epitaxy”, J. Crystal Growth, Vol 260, Pg 366-371, 2004.

45.   H.T. Wang, L.S. Tan and E.F. Chor, “Optical and electrical characterization of annealed silicon-implanted GaN,” Semiconductor Science and Technology, Vol.19, No. 2, pp.142-146, (February 2004).

46.   L.K. Li, L.S. Tan and E.F. Chor, “Effects of surface plasma treatment on n-GaN ohmic contact formation,” J. Crystal Growth, Vol.268,  pp.499-503, (2004).

47.   H.T. Wang, L.S. Tan and E.F. Chor, “Study of activation of beryllium implantation in gallium nitride,” J. Crystal Growth, Vol.268,  pp.489-493, (2004).

Conference Publications

Conference Papers 2004

1.      S. J. Chua, “Quantum dots and Group-III nitride optoelectronics”, 1st Nano-Engineering & Nano-Science Congress 2004, 7 - 9 July 2004

2.   C. K. Chia, S. J. Chua, Z. L. Miao and Y. H. Chye, “InGas self-organised quantum dots grown by molecular beam epitaxy using "nycleation-augmented method", 1st Nano-Engineering & Nano-Science Congress 2004, 7 - 9 July 2004

3.   X. C. Wang, G. C. Lim, W. Liu, S. J. Chua, H. Y. Zheng, F.L. Ng, “Investigatinon on Femtosecond pulse laser processing of GaN on sapphire, Proceedings of the 1st Pacific International Conference on Application of Lasers and Optics 2004 (PICALO 2004) organized by Laser Institute of America, April 19-21, 2004. Melbourne, Australia, Edited by Milan Brandt and Erol Harvey

4.   X. C. Wang, G. C. Lim, H. Y. Zheng, J. L. Tan, W. Liu, S. J. Chua, F. L. Ng, “248 nm excimer-laser-induced native oxide film formation on GaN surface, Proceedings of the 1st Pacific International Conference on Application of Lasers and Optics 2004 (PICALO 2004) organized by Laser Institute of America, April 19-21, 2004. Melbourne, Australia, Edited by Milan Brandt and Erol Harvey

5.   RS Kumar, SJ Chua, K Lin, M. Auch, ..MRS Spring Meeting April 12-16, 2004, Moscone West and San Francisco Marriot, San Francisco, California

6.   Z.C. Feng, Y.J. Sun, L.S. Tan, S.J. Chua, J.W. Yu, J.H. Chen, C.C. Yang, P-type doping in GaN through Be implantation, International Workshop on Nitride Semiconductors July 19 - 23, 2004, Sheraton Station Square, Pittsburgh, Pennsylvania, USA; Abstract due 3-17-2004

7.   Z.C. Feng, W. Liu, S.J. Chua, J.H. Chen, C.C. Yang, Recombination Mechanism of InGaN Multiple Quantum Wells Grown by Metalorganic Chemical Vapor Deposition, International Workshop on Nitride Semiconductors July 19 - 23, 2004, Sheraton Station Square, Pittsburgh, Pennsylvania, USA.

8.    SJ Park, HB Lee, KH Paek, LS Wang , SJ Chua, JH Lee, and SH Hahm, Schottky Diodes Fabricated on Cracked GaN Epitaxial Layer Grown on (111) Silicon, International Workshop on Nitride Semiconductors July 19 - 23, 2004, Sheraton Station Square, Pittsburgh, Pennsylvania, USA.

9.    D. Z. Chi, R. T. P. Lee, and J. J. Chua, Addressing Materials and Process-integration Issues of NiSi Silicide Process Using Impurity Engineering (invited paper), The Fourth International Workshop on Junction Technology, 16-17 March 2004, Shanghai.

10.  K. Y. Lee, D. Z. Chi, S. J. Chua H. P. Sun and X. Q. Pan, Formation and Morphology Evolution of Nickel Germanides on Ge (100) under Rapid Thermal Annealing, MRS Spring Meeting 12-16 April 2004, San Francisco, USA

11.  T. Sudhirajan and SJ Chua, Nanoscopic photoluminescence imaging of III-nitride nanostructures. International Conference on Advanced Materials and Processing, IIT Kharagpur, India, 6-8 Dec, 2004

12.  S. K. Ramadas, S. J. Chua, L. Ke, X. B. He, A. Burden, Study of Water Vapour Transport Properties of Different OLED Package Designs, MRS Spring Meeting 12-16 April 2004, San Francisco, USA

13.  J. H. Teng, S. J. Chua, L. Y. Miao, R. Yin, B. J. Li and E. A. Fitzgerald, A 3x2 Waveguide Switch Based on SiGe for C-Band Operation, Photonics Europe, 26- 30 April 2004, Strasbourg, France

14.  S. Tripathy and S. J. Chua, Near-Field Scanning Photoluminescence Microscopy of InGaN/GaN Quantum Structures, Photonics Europe, 26- 30 April 2004, Strasbourg, France

15.  CHELLAPPAN Vijila; BALAKRISNAN Bavani; Mark AUCH Dai Joong;
Eric OU Chuan Whatt; CHUA Soo Jin Investigation of charge carrier mobility in electroluminescent polyflurorene-co-polymer  MRS-S National Conference on Advanced Materials.6 August 2004.

16.  CHEN Peng; CHUA Soo Jin; TRIPATHY Sudhiranjan; MIAO Zhong Lin; Rayson TAN Jen Ngee, High-quality GaN and InGaN MQWs on 2-inch silicon substrates. The Fourteenth International Conference on Crystal Growth, 9-13 Aug 2004, Alpes Congres, Grenoble, France

17.  SOH Chew Beng; CHUA Soo Jin, Defects and its impact on luminescence of GaN related LEDs , 5th APRU Doctoral Students Conference, University of Sydney. 9-13 August 2004.

18.  SOH Chew Beng; LIU Wei; CHUA Soo Jin; TRIPATHY Sudhiranjan; CHI Dongzhi, Probing the 2-dimensional electron gas in AlInGaN/GaN heterostructure by photoluminescence spectroscopy, MRS Fall 2004, Boston, USA manuscript: 94714, E3.43 , Probing the 2-dimensional electron gas in AlInGaN/ GaN heterostructure by photoluminescence spectroscopy, submitted to Symposium E, has been accepted for the proceedings. MRS Fall 2004, Boston, USA 29Nov-3Dec 2004

19.  WANG Lian Shan; TRIPATHY Sudhiranjan; CHUA Soo Jin Contact and improvement of crystalline cracking from GaN film grown on Si by metalorganic chemical vapor deposition, IUMRS-ICA 2004 (Taiwan)

20.  Wilhelmi O, Shahrain Mahmood, Kong JR, Saw BT, Casse DBF, Heussler SP, HO Moser, Chen A, Wang BZ, Chua SJ, Hot Embossing of Micro and Nanoscale Devices, 3rd International Conference on Materials Processing for Properties and Performance (MP3), Symposium for Advanced Moulding & Forming Technologies, Singapore from 24 - 26 November 2004.

21.  21.Y.D.Wang, S.Tripathy, S.J.Chua*, C.G.Fonstad, Fabrication and characterization of GaN nanopillar arrays, MRS 2004 Fall, Boston, U.S.A

 

  
 

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