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Paper Abstract and Keywords
Presentation 2009-11-19 11:40
Exciton emission mechanism in AlN epitaxial films
Takeyoshi Onuma, Kouji Hazu (Tohoku Univ.), Takayuki Sota (Waseda Univ.), Akira Uedono (Univ. of Tsukuba), Shigefusa F. Chichibu (Tohoku Univ.) ED2009-134 CPM2009-108 LQE2009-113 Link to ES Tech. Rep. Archives: ED2009-134 CPM2009-108 LQE2009-113
Abstract (in Japanese) (See Japanese page) 
(in English) Exciton fine structures were observed in partially polarized optical reflectance and cathodoluminescence (CL) spectra of AlN epilayers grown by low-pressure metalorganic vapor phase epitaxy on (0001) Al$_2$O$_3$ substrates. A few free and four bound exciton lines were clearly resolved in the low-temperature CL spectra of the lowest threading dislocation density (2$\times$10$^{8}$~cm$^{-2}$) AlN film. From the energy difference between the ground- and the first-excited states, the hydrogenic A-exciton binding energy in the compressively strained ($\Delta$$a/a$$\approx$$-$1.68\%) AlN was estimated to be 51 meV.
Keyword (in Japanese) (See Japanese page) 
(in English) AlN / Polarization / Reflectance / Cathodoluminescence / / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 290, LQE2009-113, pp. 31-34, Nov. 2009.
Paper # LQE2009-113 
Date of Issue 2009-11-12 (ED, CPM, LQE) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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Download PDF ED2009-134 CPM2009-108 LQE2009-113 Link to ES Tech. Rep. Archives: ED2009-134 CPM2009-108 LQE2009-113

Conference Information
Committee ED LQE CPM  
Conference Date 2009-11-19 - 2009-11-20 
Place (in Japanese) (See Japanese page) 
Place (in English) Univ. of Tokushima (Josanjima Campus, Kogyo-Kaikan) 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To LQE 
Conference Code 2009-11-ED-LQE-CPM 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Exciton emission mechanism in AlN epitaxial films 
Sub Title (in English)  
Keyword(1) AlN  
Keyword(2) Polarization  
Keyword(3) Reflectance  
Keyword(4) Cathodoluminescence  
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1st Author's Name Takeyoshi Onuma  
1st Author's Affiliation Tohoku University (Tohoku Univ.)
2nd Author's Name Kouji Hazu  
2nd Author's Affiliation Tohoku University (Tohoku Univ.)
3rd Author's Name Takayuki Sota  
3rd Author's Affiliation Waseda University (Waseda Univ.)
4th Author's Name Akira Uedono  
4th Author's Affiliation University of Tsukuba (Univ. of Tsukuba)
5th Author's Name Shigefusa F. Chichibu  
5th Author's Affiliation Tohoku University (Tohoku Univ.)
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Speaker Author-1 
Date Time 2009-11-19 11:40:00 
Presentation Time 25 minutes 
Registration for LQE 
Paper # ED2009-134, CPM2009-108, LQE2009-113 
Volume (vol) vol.109 
Number (no) no.288(ED), no.289(CPM), no.290(LQE) 
Page pp.31-34 
#Pages
Date of Issue 2009-11-12 (ED, CPM, LQE) 


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