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The results for light soaking at different light intensities (3 W/cm2 and 300 mW/cm2) show that the inverse power-law DB distribution, Nυ(x)=Cυx-α, holds regardless of the light soaking intensity. Here, Nυ(x) is the volume density of DB\u0027s at depth x measured from the surface, and Cυ and α(≈0.6) are constants. The nonuniform spatial distribution of DB\u0027s in light-soaked a-Si:H is thought to originate from a nonuniform distribution of photocarriers during light soaking rather than from an inhomogeneity of the material. The same annealing behavior of light-induced DB\u0027s was observed regardless of the thickness of the sample and regardless of whether the sample was light soaked from one side or from both sides. This result, together with the observation of identical spin characteristics, indicates that the light-induced DB\u0027s at various depths of a given a-Si:H sample are identical in nature. The surface DB density is found to be much less sensitive to light soaking than the bulk DB density and can be assumed unchanged if the light-soaking intensity is not much higher than 300 mW/cm2 and the light-soaking time is shorter than ∼10 h. We show that the conventional method of estimating the surface DB density is no longer appropriate for light-soaked a-Si:H, due to the highly nonuniform distribution of DB\u0027s in the material. 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Investigation of the spatial distribution of dangling bonds in light-soaked hydrogenated amorphous silicon
http://hdl.handle.net/2297/3507
http://hdl.handle.net/2297/350737f2e75c-e5c6-4e06-8dab-151dba3d7ae1
名前 / ファイル | ライセンス | アクション |
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TE-PR-KUMEDA-M-7267.pdf (140.9 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-10-03 | |||||
タイトル | ||||||
タイトル | Investigation of the spatial distribution of dangling bonds in light-soaked hydrogenated amorphous silicon | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Zhou, Jiang-Huai
× Zhou, Jiang-Huai× Kumeda, Minoru× Shimizu, Tatsuo |
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提供者所属 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 金沢大学大学院自然科学研究科電子物性デバイス | |||||
提供者所属 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 金沢大学工学部 | |||||
書誌情報 |
Physical Review B - Condensed Matter and Materials Physics 巻 53, 号 11, p. 7267-7274, 発行日 1996-03-01 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1098-0121 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1103/physrevb.53.7267 | |||||
出版者 | ||||||
出版者 | American Physical Society | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We report on a detailed investigation of the spatial distribution of dangling bonds (DB's) in light-soaked hydrogenated amorphous silicon (a-Si:H) films. The results for light soaking at different light intensities (3 W/cm2 and 300 mW/cm2) show that the inverse power-law DB distribution, Nυ(x)=Cυx-α, holds regardless of the light soaking intensity. Here, Nυ(x) is the volume density of DB's at depth x measured from the surface, and Cυ and α(≈0.6) are constants. The nonuniform spatial distribution of DB's in light-soaked a-Si:H is thought to originate from a nonuniform distribution of photocarriers during light soaking rather than from an inhomogeneity of the material. The same annealing behavior of light-induced DB's was observed regardless of the thickness of the sample and regardless of whether the sample was light soaked from one side or from both sides. This result, together with the observation of identical spin characteristics, indicates that the light-induced DB's at various depths of a given a-Si:H sample are identical in nature. The surface DB density is found to be much less sensitive to light soaking than the bulk DB density and can be assumed unchanged if the light-soaking intensity is not much higher than 300 mW/cm2 and the light-soaking time is shorter than ∼10 h. We show that the conventional method of estimating the surface DB density is no longer appropriate for light-soaked a-Si:H, due to the highly nonuniform distribution of DB's in the material. The nonuniform distribution of DB's can lead to significant disagreements between different techniques in quantifying the Staebler-Wronski effect and should therefore be taken into account in studies of the SW effect. | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |