Pyramidal quantum dot structures by self-limited selective area metalorganic vapor phase epitaxy
We have fabricated AlGaAs GaAs quantum dot structures using selective area metalorganic vapor phase epitaxy (MOVPE). First, GaAs pyramidal structures with four-fold symmetric [lcub]011[rcub] facet side walls are formed on SiN x masked (001) GaAs with square openings. After the pyramidal structures w...
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Published in | Solid-state electronics Vol. 40; no. 1; pp. 799 - 802 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Elsevier Ltd
1996
|
Online Access | Get full text |
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Abstract | We have fabricated
AlGaAs
GaAs
quantum dot structures using selective area metalorganic vapor phase epitaxy (MOVPE). First, GaAs pyramidal structures with four-fold symmetric [lcub]011[rcub] facet side walls are formed on SiN
x
masked (001) GaAs with square openings. After the pyramidal structures were completely formed, no growth occurs on the top or side walls of the pyramids. Furthermore, the shape and width of the top area observed by a scanning electron microscope (SEM) and an atomic force microscope (AFM) is shown to be highly uniform. This indicates that
self-limited growth occurs. Next, using these uniform pyramids, GaAs quantum dots are overgrown on top of the pyramids using different growth conditions. Sharp photoluminescence (PL) spectra are observed from uniform quantum dots. |
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AbstractList | We have fabricated
AlGaAs
GaAs
quantum dot structures using selective area metalorganic vapor phase epitaxy (MOVPE). First, GaAs pyramidal structures with four-fold symmetric [lcub]011[rcub] facet side walls are formed on SiN
x
masked (001) GaAs with square openings. After the pyramidal structures were completely formed, no growth occurs on the top or side walls of the pyramids. Furthermore, the shape and width of the top area observed by a scanning electron microscope (SEM) and an atomic force microscope (AFM) is shown to be highly uniform. This indicates that
self-limited growth occurs. Next, using these uniform pyramids, GaAs quantum dots are overgrown on top of the pyramids using different growth conditions. Sharp photoluminescence (PL) spectra are observed from uniform quantum dots. |
Author | Nakakoshi, K Fukui, T Kumakura, K Motohisa, J |
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CitedBy_id | crossref_primary_10_1143_JJAP_38_L563 crossref_primary_10_1103_PhysRevB_58_7151 crossref_primary_10_1016_S0022_0248_02_00905_3 crossref_primary_10_1143_JJAP_38_343 crossref_primary_10_1016_j_jcrysgro_2010_12_084 crossref_primary_10_3390_photonics11040370 crossref_primary_10_1143_JJAP_38_1067 |
Cites_doi | 10.1016/0022-0248(91)90592-S 10.1063/1.103487 10.1016/0022-0248(93)90822-E 10.1063/1.105026 10.1049/el:19890282 10.1063/1.110041 |
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References | Fukui, Ando (BIB1) 1989; 16 Nagamune, Tsukamoto, Nishioka, Arakawa (BIB4) 1993; 126 Tsukamoto, Nagamune, Nishioka, Arakawa (BIB3) 1993; 63 Fukui, Ando, Fukai (BIB5) 1990; 57 Fukui, Ando, Tokura, Toriyama (BIB2) 1991; 58 Kayser (BIB6) 1991; 107 Tsukamoto (10.1016/0038-1101(95)00365-7_BIB3) 1993; 63 Nagamune (10.1016/0038-1101(95)00365-7_BIB4) 1993; 126 Fukui (10.1016/0038-1101(95)00365-7_BIB2) 1991; 58 Fukui (10.1016/0038-1101(95)00365-7_BIB1) 1989; 16 Fukui (10.1016/0038-1101(95)00365-7_BIB5) 1990; 57 Kayser (10.1016/0038-1101(95)00365-7_BIB6) 1991; 107 |
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Snippet | We have fabricated
AlGaAs
GaAs
quantum dot structures using selective area metalorganic vapor phase epitaxy (MOVPE). First, GaAs pyramidal structures with... |
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Title | Pyramidal quantum dot structures by self-limited selective area metalorganic vapor phase epitaxy |
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