Enhanced non steady photo-electromotive force in p-i-n structures
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| Format: | Artículo científico |
| Sprache: | en |
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Sociedad Mexicana de Ciencia y Tecnología de Superficies y Materiales A.C.
2003
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| author | Eliseo Hernández |
| author_facet | Eliseo Hernández |
| contents | Enhanced non steady photo-electromotive force in p-i-n structures Eliseo Hernández Carlos M. García John A. Coy Michael R. Melloch David D. Nolte Rubén Ramos Física, Astronomía y Matemáticas GaAs n structure Superlattice electromotive force Non steady state photo The Non-Steady State Photo-Electromotive Force (p-emf) consists in the generation of holographic currents. Thesecurrents are generated by an oscillatory interference pattern that impinges on the material. This technique is quite usefulfor electrical characterizations of the specimens; in addition to its usage for laser based ultrasound detection. The asgeneratedcurrents can be measured in plane or vertically. P+-i-n+ structures provide a natural way in which the verticaltransport can be detected. P-emf was measured for first time to our knowledge in p+-i-n+ structures in which the intrinsiclayer was grown as a superlattice of 150 periods of 100Å GaAs wells and 40Å Al0.5Ga0.5As barriers at low temperature(310 °C); this multilayered region decreases up to thousands times the vertical mobility of the photocarriers; degrading theperformance of the p-emf signal since the current is in direct relationship with the mobility of the photocarriers. A newdesign that overcomes this limit is proposed and grown for investigation of the holographic currents. A full optical andelectrical characterization of the new structure is presented and discussed 2003 artículo científico 1665-3521 https://www.redalyc.org/articulo.oa?id=94216303 en http://www.redalyc.org/revista.oa?id=942 Superficies y vacío application/pdf Sociedad Mexicana de Ciencia y Tecnología de Superficies y Materiales A.C. Superficies y vacío (México) Num.3 Vol.16 |
| format | Artículo científico |
| id | redalyc_94216303 |
| institution | Redalyc |
| language | en |
| publishDate | 2003 |
| publisher | Sociedad Mexicana de Ciencia y Tecnología de Superficies y Materiales A.C. |
| spellingShingle | Enhanced non steady photo-electromotive force in p-i-n structures Eliseo Hernández Física, Astronomía y Matemáticas GaAs n structure Superlattice electromotive force Non steady state photo Enhanced non steady photo-electromotive force in p-i-n structures Eliseo Hernández Carlos M. García John A. Coy Michael R. Melloch David D. Nolte Rubén Ramos Física, Astronomía y Matemáticas GaAs n structure Superlattice electromotive force Non steady state photo The Non-Steady State Photo-Electromotive Force (p-emf) consists in the generation of holographic currents. Thesecurrents are generated by an oscillatory interference pattern that impinges on the material. This technique is quite usefulfor electrical characterizations of the specimens; in addition to its usage for laser based ultrasound detection. The asgeneratedcurrents can be measured in plane or vertically. P+-i-n+ structures provide a natural way in which the verticaltransport can be detected. P-emf was measured for first time to our knowledge in p+-i-n+ structures in which the intrinsiclayer was grown as a superlattice of 150 periods of 100Å GaAs wells and 40Å Al0.5Ga0.5As barriers at low temperature(310 °C); this multilayered region decreases up to thousands times the vertical mobility of the photocarriers; degrading theperformance of the p-emf signal since the current is in direct relationship with the mobility of the photocarriers. A newdesign that overcomes this limit is proposed and grown for investigation of the holographic currents. A full optical andelectrical characterization of the new structure is presented and discussed 2003 artículo científico 1665-3521 https://www.redalyc.org/articulo.oa?id=94216303 en http://www.redalyc.org/revista.oa?id=942 Superficies y vacío application/pdf Sociedad Mexicana de Ciencia y Tecnología de Superficies y Materiales A.C. Superficies y vacío (México) Num.3 Vol.16 |
| title | Enhanced non steady photo-electromotive force in p-i-n structures |
| topic | Física, Astronomía y Matemáticas GaAs n structure Superlattice electromotive force Non steady state photo |
| url | https://www.redalyc.org/articulo.oa?id=94216303 |