http://www.cnr.it/ontology/cnr/individuo/prodotto/ID36597
Boron diffusion in extrinsically doped crystalline silicon (Articolo in rivista)
- Type
- Label
- Boron diffusion in extrinsically doped crystalline silicon (Articolo in rivista) (literal)
- Anno
- 2010-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1103/PhysRevB.81.045209 (literal)
- Alternative label
De Salvador D, Napolitani E, Bisognin G, Pesce M, Carnera A, Bruno E, Impellizzeri G, Mirabella S (2010)
Boron diffusion in extrinsically doped crystalline silicon
in Physical review. B, Condensed matter and materials physics; The American Physical Society, College Park, MD 20740-3844 (Stati Uniti d'America)
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- De Salvador D, Napolitani E, Bisognin G, Pesce M, Carnera A, Bruno E, Impellizzeri G, Mirabella S (literal)
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- ISI Web of Science (WOS) (literal)
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- 1. Univ Padua, INFM, CNR, MATIS, I-35131 Padua, Italy
2. Univ Padua, Dipartimento Fis, I-35131 Padua, Italy
3. Catania Univ, INFM, CNR, MATIS, I-95123 Catania, Italy
4. Catania Univ, Dipartimento Fis & Astron, I-95123 Catania, Italy (literal)
- Titolo
- Boron diffusion in extrinsically doped crystalline silicon (literal)
- Abstract
- Boron diffusion is investigated in details by monitoring B-sharp concentration profiles embedded in isoconcentration doping backgrounds. Atomistic diffusion parameters (kick-out rate g, mean-free path of the mobile species lambda, and the diffusivity D) are experimentally evaluated as a function of temperature and doping level both of p or n type. This allows for a quantitative determination of the physical phenomena involved in the B diffusion process. We found that negatively charged substitutional B diffuses by interaction with neutral or doubly positively charged self-interstitials. The BI complex formed after interaction diffuses mainly in a neutral state and, to a less extent, through singly negatively charged state. The former contributes for about one tenth to the full diffusion in intrinsic condition at 700 degrees C whereas it plays a significant role in high n-codoping regime. Moreover, n codoping with As or P induces a Coulomb pairing between the different charge states of the dopants that reduces diffusion. Pairing effect is disentangled by the effect of BI- diffusion and pairing energies are determined for both As and P presence. The resulting quantitative model of diffusion is presented and compared with existing literature. (literal)
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