Monolithic Polychromatic Light-Emitting Diodes Based on InGaN Microfacet Quantum Wells toward Tailor-Made Solid-State Lighting
作者： Mitsuru Funato , Takeshi Kondou , Keita Hayashi , Shotaro Nishiura , Masaya Ueda
关键词:
摘要: Monolithic polychromatic light-emitting diodes (LEDs) based on micro-structured InGaN/GaN quantum wells are demonstrated. The microstructure is created through regrowth SiO2 mask stripes along the [1100] direction and consists of (0001) {1122} facets. LEDs exhibit emission, including white, due to additive color mixture facet-dependent emission colors. Altering growth conditions geometry easily controls apparent color. Furthermore, simulations predict high light extraction efficiencies their three-dimensional structures. Those observations suggest that proposed phosphor-free may lead highly efficient solid-state lighting in which spectra sources synthesized satisfy specific requirements for illuminations.
jsap.jp参考文章(13)
J.Y. Tsao, Solid-state lighting: lamps, chips, and materials for tomorrow IEEE Circuits & Devices. ,vol. 20, pp. 28- 37 ,(2004) , 10.1109/MCD.2004.1304539
K. Nishizuka, M. Funato, Y. Kawakami, Sg. Fujita, Y. Narukawa, T. Mukai, Efficient radiative recombination from -oriented InxGa1-xN multiple quantum wells fabricated by the regrowth technique Applied Physics Letters. ,vol. 85, pp. 3122- 3124 ,(2004) , 10.1063/1.1806266
Benjamin Damilano, Nicolas Grandjean, Cyril Pernot, Jean Massies, Monolithic White Light Emitting Diodes Based on InGaN/GaN Multiple-Quantum Wells Japanese Journal of Applied Physics. ,vol. 40, pp. 918- ,(2001) , 10.1143/JJAP.40.L918
H. Marchand, J.P. Ibbetson, P.T. Fini, S. Keller, S.P. DenBaars, J.S. Speck, U.K. Mishra, Mechanisms of lateral epitaxial overgrowth of gallium nitride by metalorganic chemical vapor deposition Journal of Crystal Growth. ,vol. 195, pp. 328- 332 ,(1998) , 10.1016/S0022-0248(98)00591-0
J Wu, Wl Walukiewicz, KM Yu, JW Ager Iii, EE Haller, Hai Lu, William J Schaff, None, Narrow bandgap group III-nitride alloys Physica Status Solidi B-basic Solid State Physics. ,vol. 240, pp. 412- 416 ,(2003) , 10.1002/PSSB.200303475
Kanji BANDO, Kensho SAKANO, Yasunobu NOGUCHI, Yoshinori SHIMIZU, Development of High-bright and Pure-white LED Lamps Journal of Light & Visual Environment. ,vol. 22, pp. 2- 5 ,(1998) , 10.2150/JLVE.22.1_2
M. Ueda, T. Kondou, K. Hayashi, M. Funato, Y. Kawakami, Y. Narukawa, T. Mukai, Additive color mixture of emission from InGaN∕GaN quantum wells on structure-controlled GaN microfacets Applied Physics Letters. ,vol. 90, pp. 171907- ,(2007) , 10.1063/1.2731526
Yukio Narukawa, Junya Narita, Takahiko Sakamoto, Kouichiro Deguchi, Takao Yamada, Takashi Mukai, Ultra-High Efficiency White Light Emitting Diodes Japanese Journal of Applied Physics. ,vol. 45, pp. L1084- L1086 ,(2006) , 10.1143/JJAP.45.L1084
M. Funato, T. Kotani, T. Kondou, Y. Kawakami, Y. Narukawa, T. Mukai, Tailored emission color synthesis using microfacet quantum wells consisting of nitride semiconductors without phosphors Applied Physics Letters. ,vol. 88, pp. 261920- ,(2006) , 10.1063/1.2217259
Barbara Neubert, Peter Brückner, Frank Habel, Ferdinand Scholz, Till Riemann, Jürgen Christen, Martin Beer, Joseph Zweck, GaInN quantum wells grown on facets of selectively grown GaN stripes Applied Physics Letters. ,vol. 87, pp. 182111- ,(2005) , 10.1063/1.2126798