抄録
Microstructure of porous silicon (PS) was observed through high-resolution transmission electron microscope to study a relationship between the microstructure and a photoluminescence (PL) from PS. Three PS samples were made through anodization with different current densities. The samples had different PL spectra and were supposed to have different microstructures. Threadlike structures of Si and Si crystallites in the PS layer were observed in all the samples. The threadlike structure has the same density in all samples and has very little structural change, in spite of a significant change of PL spectra. The density of the Si crystallites varies for the samples and has a strong correlation with the PL intensity. No particular change of crystallites shape was observed. The size of the crystallites ranges from a few nanometers to a few tens of nanometers. Although no positive evidence to a quantum confinement is indicated, the Si crystallites are responsible for a light emission from PS.
| 元の言語 | English |
|---|---|
| ページ（範囲） | 484-486 |
| ページ数 | 3 |
| ジャーナル | Applied Physics Letters |
| 巻 | 65 |
| 発行部数 | 4 |
| DOI | |
| 出版物ステータス | Published - 1994 |
| 外部発表 | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
これを引用
Microstructure of porous silicon and its correlation with photoluminescence. / Takasuka, E.; Kamei, K.
：: Applied Physics Letters, 巻 65, 番号 4, 1994, p. 484-486.研究成果: Article
}
TY - JOUR
T1 - Microstructure of porous silicon and its correlation with photoluminescence
AU - Takasuka, E.
AU - Kamei, K.
PY - 1994
Y1 - 1994
N2 - Microstructure of porous silicon (PS) was observed through high-resolution transmission electron microscope to study a relationship between the microstructure and a photoluminescence (PL) from PS. Three PS samples were made through anodization with different current densities. The samples had different PL spectra and were supposed to have different microstructures. Threadlike structures of Si and Si crystallites in the PS layer were observed in all the samples. The threadlike structure has the same density in all samples and has very little structural change, in spite of a significant change of PL spectra. The density of the Si crystallites varies for the samples and has a strong correlation with the PL intensity. No particular change of crystallites shape was observed. The size of the crystallites ranges from a few nanometers to a few tens of nanometers. Although no positive evidence to a quantum confinement is indicated, the Si crystallites are responsible for a light emission from PS.
AB - Microstructure of porous silicon (PS) was observed through high-resolution transmission electron microscope to study a relationship between the microstructure and a photoluminescence (PL) from PS. Three PS samples were made through anodization with different current densities. The samples had different PL spectra and were supposed to have different microstructures. Threadlike structures of Si and Si crystallites in the PS layer were observed in all the samples. The threadlike structure has the same density in all samples and has very little structural change, in spite of a significant change of PL spectra. The density of the Si crystallites varies for the samples and has a strong correlation with the PL intensity. No particular change of crystallites shape was observed. The size of the crystallites ranges from a few nanometers to a few tens of nanometers. Although no positive evidence to a quantum confinement is indicated, the Si crystallites are responsible for a light emission from PS.
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UR - http://www.scopus.com/inward/citedby.url?scp=0028462263&partnerID=8YFLogxK
U2 - 10.1063/1.112345
DO - 10.1063/1.112345
M3 - Article
AN - SCOPUS:0028462263
VL - 65
SP - 484
EP - 486
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 4
ER -