– L Zhu, SY Huang, PT Lai, and HW Choi IEEE Photonics Technology Letters, vol. 23, 24, pp. 1857-1859 (2011) A hemispherical lens capillary-bonded to an…
– GY Mak, L Zhu, Z Ma, SY Huang, EY Lam, and HW Choi Journal of Physics D: Applied Physics, vol. 44, 22, pp. 224016…
– L Zhu, XH Wang, PT Lai, and HW Choi IEEE Photonics Technology Letters, vol. 22, 7, pp. 513-515 (2010) We report on white light-emitting diodes…
– XH Wang, PT Lai, and HW Choi Journal of Applied Physics, vol. 108, 2, pp. 023110 (2010) The light extraction efficiencies of InGaN/GaN blue…
– ZL Li, KH Li, and HW Choi Journal of Applied Physics, vol. 108, 11, pp. 114511 (2010) While the enhancement of light extraction efficiency…
– XH Wang, WY Fu, PT Lai, and HW Choi Optics Express, vol. 17, 25, pp. 22311-22319 (2009) Blue GaN light emitting diodes (LEDs) in…
– WY Fu, KN Hui, XH Wang, KKY Wong, PT Lai, and HW Choi IEEE Photonics Technology Letters, vol. 21, 15, pp. 1078-1080 (2009) Geometrical…
– KN Hui, XH Wang, ZL Li, PT Lai, and HW Choi Optics Express, vol. 17, 12, pp. 9873-9878 (2009) A new design for a…
– L Zhu, CW Ng, N Wong, KKY Wong, PT Lai, and HW Choi IEEE Photonics Journal, vol. 1, 1, pp. 1-8 (2009) We report on…
– KN Hui, WY Fu, WN Ng, CH Leung, PT Lai, KKY Wong, and HW Choi Nanotechnology, vol. 19, 35, pp. 355203 (2008) A hexagonally close-packed array…