Theoretical analysis and experimental results on the modulated photocarrier grating technique
- Autores
- Schmidt, Javier Alejandro; Budini, Nicolas; Ventosinos, Federico; Longeaud, C.
- Año de publicación
- 2010
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We present a complete theoretical analysis of the modulated photocarrier grating method (MPG). Our calculations show that the response of the sample will be not only a photocurrent modulated with the frequency f of the illumination, but also a response in dc and with frequency 2f. In order to put to test our calculations, we implement experimentally the MPG technique and we apply it to a hydrogenated amorphous silicon sample. We verify the existence of a response at frequency 2f, and we measure the relative intensity of this signal ? which compares well with the result of our theoretical calculation. We also show that under certain conditions the density of states (DOS) at the quasi-Fermi level for the majority carriers is related to the ratio of the MPG and modulated photoconductivity (MPC) signals. We present a simple formula that allows estimating the DOS as a function of energy by changing the temperature and the generation rate.
Fil: Schmidt, Javier Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina
Fil: Budini, Nicolas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina
Fil: Ventosinos, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina
Fil: Longeaud, C.. Universite´s Paris VI et XI; Francia - Materia
-
Hydrogenated Amorphous Silicon
Modulated Photocarrier Grating
Photoconductivity
Density of States - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
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- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/13449
Ver los metadatos del registro completo
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Theoretical analysis and experimental results on the modulated photocarrier grating techniqueSchmidt, Javier AlejandroBudini, NicolasVentosinos, FedericoLongeaud, C.Hydrogenated Amorphous SiliconModulated Photocarrier GratingPhotoconductivityDensity of Stateshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present a complete theoretical analysis of the modulated photocarrier grating method (MPG). Our calculations show that the response of the sample will be not only a photocurrent modulated with the frequency f of the illumination, but also a response in dc and with frequency 2f. In order to put to test our calculations, we implement experimentally the MPG technique and we apply it to a hydrogenated amorphous silicon sample. We verify the existence of a response at frequency 2f, and we measure the relative intensity of this signal ? which compares well with the result of our theoretical calculation. We also show that under certain conditions the density of states (DOS) at the quasi-Fermi level for the majority carriers is related to the ratio of the MPG and modulated photoconductivity (MPC) signals. We present a simple formula that allows estimating the DOS as a function of energy by changing the temperature and the generation rate.Fil: Schmidt, Javier Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); ArgentinaFil: Budini, Nicolas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); ArgentinaFil: Ventosinos, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); ArgentinaFil: Longeaud, C.. Universite´s Paris VI et XI; FranciaWiley Vch Verlag2010-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/13449Schmidt, Javier Alejandro; Budini, Nicolas; Ventosinos, Federico; Longeaud, C.; Theoretical analysis and experimental results on the modulated photocarrier grating technique; Wiley Vch Verlag; Physica Status Solidi A-applications And Materials Science; 207; 1-2010; 556-5601862-6300enginfo:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/pssa.200982707/abstractinfo:eu-repo/semantics/altIdentifier/doi/10.1002/pssa.200982707info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:33:39Zoai:ri.conicet.gov.ar:11336/13449instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:33:40.136CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
Theoretical analysis and experimental results on the modulated photocarrier grating technique |
| title |
Theoretical analysis and experimental results on the modulated photocarrier grating technique |
| spellingShingle |
Theoretical analysis and experimental results on the modulated photocarrier grating technique Schmidt, Javier Alejandro Hydrogenated Amorphous Silicon Modulated Photocarrier Grating Photoconductivity Density of States |
| title_short |
Theoretical analysis and experimental results on the modulated photocarrier grating technique |
| title_full |
Theoretical analysis and experimental results on the modulated photocarrier grating technique |
| title_fullStr |
Theoretical analysis and experimental results on the modulated photocarrier grating technique |
| title_full_unstemmed |
Theoretical analysis and experimental results on the modulated photocarrier grating technique |
| title_sort |
Theoretical analysis and experimental results on the modulated photocarrier grating technique |
| dc.creator.none.fl_str_mv |
Schmidt, Javier Alejandro Budini, Nicolas Ventosinos, Federico Longeaud, C. |
| author |
Schmidt, Javier Alejandro |
| author_facet |
Schmidt, Javier Alejandro Budini, Nicolas Ventosinos, Federico Longeaud, C. |
| author_role |
author |
| author2 |
Budini, Nicolas Ventosinos, Federico Longeaud, C. |
| author2_role |
author author author |
| dc.subject.none.fl_str_mv |
Hydrogenated Amorphous Silicon Modulated Photocarrier Grating Photoconductivity Density of States |
| topic |
Hydrogenated Amorphous Silicon Modulated Photocarrier Grating Photoconductivity Density of States |
| purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| dc.description.none.fl_txt_mv |
We present a complete theoretical analysis of the modulated photocarrier grating method (MPG). Our calculations show that the response of the sample will be not only a photocurrent modulated with the frequency f of the illumination, but also a response in dc and with frequency 2f. In order to put to test our calculations, we implement experimentally the MPG technique and we apply it to a hydrogenated amorphous silicon sample. We verify the existence of a response at frequency 2f, and we measure the relative intensity of this signal ? which compares well with the result of our theoretical calculation. We also show that under certain conditions the density of states (DOS) at the quasi-Fermi level for the majority carriers is related to the ratio of the MPG and modulated photoconductivity (MPC) signals. We present a simple formula that allows estimating the DOS as a function of energy by changing the temperature and the generation rate. Fil: Schmidt, Javier Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina Fil: Budini, Nicolas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina Fil: Ventosinos, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina Fil: Longeaud, C.. Universite´s Paris VI et XI; Francia |
| description |
We present a complete theoretical analysis of the modulated photocarrier grating method (MPG). Our calculations show that the response of the sample will be not only a photocurrent modulated with the frequency f of the illumination, but also a response in dc and with frequency 2f. In order to put to test our calculations, we implement experimentally the MPG technique and we apply it to a hydrogenated amorphous silicon sample. We verify the existence of a response at frequency 2f, and we measure the relative intensity of this signal ? which compares well with the result of our theoretical calculation. We also show that under certain conditions the density of states (DOS) at the quasi-Fermi level for the majority carriers is related to the ratio of the MPG and modulated photoconductivity (MPC) signals. We present a simple formula that allows estimating the DOS as a function of energy by changing the temperature and the generation rate. |
| publishDate |
2010 |
| dc.date.none.fl_str_mv |
2010-01 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/13449 Schmidt, Javier Alejandro; Budini, Nicolas; Ventosinos, Federico; Longeaud, C.; Theoretical analysis and experimental results on the modulated photocarrier grating technique; Wiley Vch Verlag; Physica Status Solidi A-applications And Materials Science; 207; 1-2010; 556-560 1862-6300 |
| url |
http://hdl.handle.net/11336/13449 |
| identifier_str_mv |
Schmidt, Javier Alejandro; Budini, Nicolas; Ventosinos, Federico; Longeaud, C.; Theoretical analysis and experimental results on the modulated photocarrier grating technique; Wiley Vch Verlag; Physica Status Solidi A-applications And Materials Science; 207; 1-2010; 556-560 1862-6300 |
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eng |
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eng |
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Wiley Vch Verlag |
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