Jpn. J. Appl. Phys. 50 (2011) 050204 (3 pages)  |Previous Article| |Next Article|  |Table of Contents|
|Full Text PDF (500K)| |Buy This Article|

Rapid Communication

Power Dependent Micro-Photoluminescence of Green-InGaN/GaN Multiple Quantum Wells

Sang-Youp Yim, Joon Heon Kim, Mun Seok Jeong, Seung-Han Park¹, and Jongmin Lee

(Received January 17, 2011; accepted March 27, 2011; published online May 6, 2011)

We report the excitation-power-dependent micro-photoluminescence (micro-PL) of green-InGaN/GaN multiple quantum wells grown on a sapphire substrate. By using a micro-PL imaging technique based on laser scanning confocal microscopy, bright luminescent centers emitting blue, green, and yellow bands were clearly resolved at a low excitation power. With increasing power, in addition, the strong blue-shift of PL bands from all luminescent centers was observed, with a much stronger blue-shift for initial yellow band. We show that the band-tail filling model qualitatively agrees well with our microscopic study revealing the origin of apparent bandwidth-narrowing in macroscopic ensemble PL spectra.

URL: http://jjap.jsap.jp/link?JJAP/50/050204/
DOI: 10.1143/JJAP.50.050204
PACS: 78.55.Cr, 78.67.De, 81.15.Gh

References

1. M. S. Jeong, J. Y. Kim, Y.-W. Kim, J. O. White, E.-K. Suh, C.-H. Hong, and H. J. Lee: Appl. Phys. Lett. 79 (2001) 976[AIP Scitation].
2. M. S. Jeong, Y.-W. Kim, J. O. White, E.-K. Suh, M. G. Cheong, C. S. Kim, C.-H. Hong, and H. J. Lee: Appl. Phys. Lett. 79 (2001) 3440[AIP Scitation].
3. A. Kaneta, T. Izumi, K. Okamoto, Y. Kawakami, Sg. Fujita, Y. Narita, T. Inoue, and T. Mukai: Jpn. J. Appl. Phys. 40 (2001) 110[JSAP].
4. A. Kaneta, K. Okamoto, Y. Kawakami, G. Marutsuki, Y. Narukawa, and T. Mukai: Appl. Phys. Lett. 81 (2002) 4353[AIP Scitation].
5. A. Kaneta, M. Funato, and Y. Kawakami: Phys. Rev. B 78 (2008) 125317[APS].
6. F. Hitzel, G. Klewer, S. Lahmann, U. Rossow, and A. Hangleiter: Phys. Rev. B 72 (2005) 081309[APS](R).
7. V. Liuolia, A. Pinos, S. Marcinkevičius, Y. D. Lin, H. Ohta, S. P. DenBaars, and S. Nakamura: Appl. Phys. Lett. 97 (2010) 151106[AIP Scitation].
8. H. Schömig, S. Halm, A. Forchel, G. Bacher, J. Off, and F. Scholz: Phys. Rev. Lett. 92 (2004) 106802[APS].
9. K. P. O'Donnell, C. T. Cowan, S. Pereira, A. Bangura, C. Young, M. E. White, and M. J. Tobin: Phys. Status Solidi B 216 (1999) 157[CrossRef].
10. K. P. O'Donnell, M. J. Tobin, S. C. Bayliss, and W. Van Der Stricht: J. Microsc. 193 (1999) 105.
11. K. Okamoto, J. Choi, Y. Kawakami, M. Terazima, T. Mukai, and Sg. Fujita: Jpn. J. Appl. Phys. 43 (2004) 839[JSAP].
12. K. Okamoto, A. Kaneta, Y. Kawakami, S. Fujita, J. Choi, M. Terazima, and T. Mukai: J. Appl. Phys. 98 (2005) 064503[AIP Scitation].
13. T. Miyoshi, S. Masui, T. Okada, T. Yanamoto, T. Kozaki, S. Nagahama, and T. Mukai: Appl. Phys. Express 2 (2009) 062201[JSAP].
14. A. Hangleiter, F. Hitzel, C. Netzel, D. Fuhrmann, U. Rossow, G. Ade, and P. Hinze: Phys. Rev. Lett. 95 (2005) 127402[APS].
15. T. Takeuchi, S. Sota, M. Katsuragawa, M. Komori, H. Takeuchi, H. Amano, and I. Akasaki: Jpn. J. Appl. Phys. 36 (1997) L382[JSAP].
16. D. A. B. Miller, D. S. Chemla, T. C. Damen, A. C. Gossard, W. Wiegmann, T. H. Wood, and C. A. Burrus: Phys. Rev. B 32 (1985) 1043[APS].
17. S. Chichibu, T. Azuhata, T. Sota, and S. Nakamura: Appl. Phys. Lett. 69 (1996) 4188[AIP Scitation].
18. K. Kazlauskas, G. Tamulaitis, P. Pobedinskas, A. Žukauskas, M. Springis, C.-F. Huang, Y.-C. Cheng, and C. C. Yang: Phys. Rev. B 71 (2005) 085306[APS].
19. K. Kazlauskas, G. Tamulaitis, J. Mickevičius, E. Kuokštis, A. Žukauskas, Y.-C. Cheng, H.-C. Wang, C.-F. Huang, and C. C. Yang: J. Appl. Phys. 97 (2005) 013525[AIP Scitation].
20. X. Ni, R. Shimada, J. H. Leach, J. Xie, Ü. Özgür, and H. Morkoç: Proc. SPIE 6894 (2008) 689428[AIP Scitation].
21. J.-H. Chen, Z.-C. Feng, H.-L. Tsai, J.-R. Yang, P. Li, C. Wetzel, T. Detchprohm, and J. Nelson: Thin Solid Films 498 (2006) 123[CrossRef].
22. F. Della Sala, A. Di Carlo, P. Lugli, F. Bernardini, V. Fiorentini, R. Scholz, and J.-M. Jancu: Appl. Phys. Lett. 74 (1999) 2002[AIP Scitation].