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Article

Lee, C.L. and Choi, H.W. and Gu, E. and Dawson, M.D. and Murphy, H. (2006) Fabrication and characterization of diamond micro-optics. Diamond and Related Materials, 15 (4-8). pp. 725-728. ISSN 0925-9635

Griffin, C. and Gu, E. and Choi, H.W. and Jeon, C.W. and Girkin, J.M. and Dawson, M.D. and McConnell, G. (2005) Beam divergence measurements of InGaN/GaN micro-array light-emitting diodes using confocal microscopy. Applied Physics Letters, 86 (4). ISSN 0003-6951

Choi, H.W. and Dawson, M.D. (2005) Enhanced areal efficiency from 370nm AlGaN micro-ring light emitting diodes. Physica Status Solidi C, 2 (7). pp. 2854-2857. ISSN 1610-1642

Choi, H.W. and Gu, E. and Liu, C. and Girkin, J.M. and Dawson, M.D. (2005) Fabrication and evaluation of GaN negative and bifocal microlenses. Journal of Applied Physics, 97 (063101). ISSN 0021-8979

Choi, H.W. and Gu, E. and Liu, C. and Griffin, C. and Girkin, J.M. and Watson, I.M. and Dawson, M.D. (2005) Fabrication of natural diamond microlenses by plasma etching. Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures, 23 (1). pp. 130-132. ISSN 1071-1023

Choi, H.W. and Dawson, M.D. (2005) Improved current spreading in 370nm AlGaN microring light emitting diodes. Applied Physics Letters, 86 (053504). ISSN 0003-6951

Choi, H.W. and Gu, E. and Girkin, J.M. and Dawson, M.D. (2005) Nitride micro-display with integrated micro-lenses. Physica Status Solidi C, 2. pp. 2903-2906. ISSN 1610-1642

Choi, H.W. and Gu, E. and Liu, C. and Griffin, C. and Girkin, J.M. and Watson, I.M. and Dawson, M.D. (2005) Properties of natural diamond microlenses fabricated by plasma etching. Industrial Diamond Review, 2005 (2). pp. 29-32. ISSN 0019-8145

Choi, H.W. and Jeon, C.W. and Dawson, M.D. (2005) Tapered sidewall dry etching process for GaN and its applications in device fabrication. Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures, 23 (1). pp. 99-102. ISSN 1071-1023

Choi, H. W. and Jeon, C. W. and Liu, C. and Watson, I. M. and Dawson, M. D. and Edwards, P. R. and Martin, R. W. and Tripathy, S. and Chua, S. J. (2004) InGaN nano-ring structures for high-efficiency light emitting diodes. Applied Physics Letters, 86 (2). 021101. ISSN 0003-6951

Jeon, C.W. and Choi, H.W. and Gu, E. and Dawson, M.D. (2004) High density matrix-addressable AllnGaN-based 368-nm microarray light-emitting diodes. IEEE Photonics Technology Letters, 16 (11). pp. 2421-2423. ISSN 1041-1135

Choi, H.W. and Jeon, C.W. and Dawson, M.D. (2004) Fabrication of matrix-addressable micro-LED arrays based on a novel etch technique. Journal of Crystal Growth, 268 (3-4). pp. 527-530. ISSN 0022-0248

Choi, H.W. and Jeon, C.W. and Dawson, M.D. (2004) High resolution 128x96 nitride microdisplay. IEEE Electron Device Letters, 25 (5). pp. 277-279. ISSN 0741-3106

Choi, H.W. and Jeon, C.W. and Dawson, M.D. (2004) InGaN microring light-emitting diodes. IEEE Photonics Technology Letters, 16 (1). pp. 33-35. ISSN 1041-1135

Choi, H.W. and Liu, C. and Gu, E. and McConnell, G. and Girkin, J.M. and Watson, I.M. and Dawson, M.D. (2004) GaN micro-light-emitting diode arrays with monolithically integrated sapphire microlenses. Applied Physics Letters, 84 (13). pp. 2253-2255. ISSN 0003-6951

Gu, E. and Choi, H.W. and Liu, C. and Griffin, C. and Girkin, J.M. and Watson, I.M. and Dawson, M.D. and McConnell, G. and Gurney, A.M. (2004) Reflection/transmission confocal microscopy characterization of single-crystal diamond microlens arrays. Applied Physics Letters, 84 (15). pp. 2754-2756. ISSN 0003-6951

Choi, H.W. and Edwards, P.R. and Liu, C. and Jeon, C.W. and Martin, R.W. and Watson, I.M. and Dawson, M.D. and Tripathy, P. and Chua, S.J. (2004) Sub-micron inGaN ring structures for high-efficiency LEDs. Physica Status Solidi C, 1 (2). pp. 202-205. ISSN 1610-1642

Girkin, J.M. and Gu, E. and Griffin, C. and Choi, H.W. and Dawson, M.D. and McConnell, G. (2004) Use of confocal and multiphoton microscopy for the evaluation of micro-optical components and emitters. Microscopy Research and Technique, 64 (4). pp. 293-296. ISSN 1059-910X

Choi, H.W. and Dawson, M.D. and Edwards, P.R. and Martin, R.W. (2003) High extraction efficiency ingan micro-ring light emitting diodes. Applied Physics Letters, 83 (22). pp. 4483-4485. ISSN 0003-6951

Jeon, C.W. and Choi, H.W. and Dawson, M.D. (2003) Fabrication of matrix-addressable InGaN-based microdisplays of high array density. IEEE Photonics Technology Letters, 15 (11). pp. 1516-1518. ISSN 1041-1135

Choi, H.W. and Jeon, C.W. and Dawson, M.D. (2003) InGaN light-emitting diodes of micro-ring geometry. Physica Status Solidi C (7). pp. 2185-2188. ISSN 1610-1642

Choi, H.W. and Jeon, C.W. and Dawson, M.D. (2003) Low resistivity contacts to p-type GaN by plasma treatment. Physica Status Solidi C (7). pp. 2210-2213. ISSN 1610-1642

Jeon, C.W. and Choi, H.W. and Dawson, M.D. (2003) A novel fabrication method for a 64x64 matrix-addressable GaN-based micro-LED array. Physica Status Solidi A, 200 (1). pp. 79-82. ISSN 1862-6300

Choi, H. W. and Jeon, C. W. and Dawson, M. D. and Edwards, P. R. and Martin, R. W. and Tripathy, S. (2003) Mechanism of enhanced light output in InGaN-based microlight emitting diodes. Journal of Applied Physics, 93 (10). pp. 5978-5982. ISSN 0021-8979

Choi, H.W. and Jeon, C.W. and Dawson, M.D. and Edwards, P.R. and Martin, R.W. (2003) Fabrication and performance of parallel-addressed InGaN micro-LED arrays. IEEE Photonics Technology Letters, 15 (4). pp. 510-512. ISSN 1041-1135

Book Section

Gu, E. and Choi, H.W. and Liu, C. and Watson, I.M. and Girkin, J.M. and Dawson, M.D.; (2004) Bi-focal and negative microlens arrays in hard optical materials. In: Lasers and Electro-Optics Society, 2004. LEOS 2004. IEEE, pp. 360-361. ISBN 9780780385573

Griffin, C. and Gu, E. and Choi, H.W. and Jeon, C.W. and Rolinski, O.J. and Birch, D.J.S. and Girkin, J.M. and Dawson, M.D. IEEE (2004) Fluorescence excitation and lifetime measurements using GaN/InGaN micro-LED arrays. In: Lasers and Electro-Optics Society, 2004. LEOS 2004. The 17th Annual Meeting of the IEEE. IEEE, pp. 896-897. ISBN 9780780385573

McConnell, G. and Gu, E. and Griffin, C. and Jeon, C.W. and Choi, H.W. and Gurney, A.M. and Girkin, J.M. and Dawson, M.D.; (2004) Two-photon fluorescence imaging of gallium nitride micro-LED arrays. In: Microscopy of semiconducting materials. Institute of Physics Conference Series, 180 . Taylor and Francis, United Kingdom, pp. 341-344. ISBN 0750309792

Jeon, C.W. and Choi, H.W. and Dawson, M.D.; (2003) Fabrication and performance of high-density, matrix-addressable green and ultraviolet micro-LED arrays. In: LEOS 2003: 16th Annual meeting of the IEEE Lasers & Electro-Optics Society. IEEE, pp. 878-879. ISBN 0-7803-7888-1

Choi, H.W. and Jeon, C.W. and Liu, C. and Dawson, M.D.; (2003) GaN micro-LED arrays with integrated sapphire micro-lenses. In: LEOS 2003: 16th Annual Meeting of the IEEE Lasers & Electro-Optics Society. IEEE, pp. 654-655. ISBN 0-7803-7888-1

McConnell, G. and Gu, E. and Griffin, C. and Jeon, C.W. and Choi, H.W. and Gurney, A.M. and Girkin, J.M. and Dawson, M.D.; Cullis, A.G. and Midgley, P.A., eds. (2003) Two-photon fluorescence imaging of GaN micro-LED arrays. In: Microscopy of Semiconducting Materials 2003: Proceedings of the Institute of Physics Conference. Institute of Physics conference series, 180 . CRC Press, Bristol, United Kingdom, pp. 341-344. ISBN 9780750309790

Jeon, C.W. and Choi, H.W. and Edwards, P.R. and Bryce, A.C. and Dawson, M.D.; (2002) 64 x 64 matrix-addressable arrays of GaN-based micro-LEDs. In: Lasers and Electro-Optics Society, 2002. LEOS 2002. The 15th Annual Meeting of the IEEE. IEEE, pp. 685-686. ISBN 0-7803-7500-9

Choi, H.W. and Jeon, C.W. and Dawson, M.D. and Edwards, P.R. and Martin, R.W.; Wetzel, Christian and Yu, Edward T. and Speck, James S. and Rizzi, Angela and Arakawa, Yasuhiko, eds. (2002) Efficient GaN-based micro-LED arrays. In: Proceedings of the 2002 MRS Fall Meeting. MRS, pp. 433-438.

Conference or Workshop Item

Edwards, P.R. and Martin, R.W. and Choi, H.W. and Dawson, M.D. (2004) Hyper-spectral cathodoluminescence imaging of blue light-emitting micro-devices. In: 5th International Symposium on Blue Lasers and Light Emitting Diodes (ISBLLED 2004), 2004-03-16 - 2004-03-19.

Gu, E. and Choi, H.W. and Jeon, C.W. and Rice, G.B. and Liu, C. and Watson, I.M. and Dawson, M.D. and Edwards, P.R. and Martin, R.W. (2003) Microstructure fabrication in gallium nitride, silicon carbide and diamond. In: Wide Bandgap Semiconductor Technology: Institute of Physics Day Meeting, 2003-09-17. (Unpublished)

McConnell, G. and Gu, E. and Griffin, C. and Jeon, C.W. and Choi, H.W. and Girkin, J.M. and Dawson, M.D. (2003) Structural and performance evaluation of gallium nitride micro-LED arrays via multiphoton fluorescence imaging. In: Focus on Microscopy, 2003-04-13 - 2003-04-16. (Unpublished)