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Article: Carrier nonresonant tunneling in asymmetric coupled double quantum wells
Title | Carrier nonresonant tunneling in asymmetric coupled double quantum wells |
---|---|
Authors | |
Issue Date | 1992 |
Publisher | Academic Press. The Journal's web site is located at http://www.elsevier.com/locate/superlattices |
Citation | Superlattices And Microstructures, 1992, v. 12 n. 2, p. 231-235 How to Cite? |
Abstract | The excitation power dependence of nonresonant tunneling rates for photogenerated carriers is studied in a GaAs/Al0.35Ga0.65As/GaAs (50A/40A/100A) asymmetric double quantum well p-i-n structure by photoluminescence (PL) measurement. It is found that PL from the two coupled wells depends strongly on excitation power. Especially, the PL peak intensity of the narrow well rapidly decreases as excitation power increases to a certain extent. The explanation for the strong excitation power dependence of the carrier tunneling rates is that LO-phonon-assisted tunneling enhances the rates significantly because of energy-band flattening due to the spatial separation of electrons and holes between the two coupled wells. Our results may be of significance in creating novel alloptical devices. © 1992. |
Persistent Identifier | http://hdl.handle.net/10722/174694 |
ISSN | 2023 Impact Factor: 3.3 2020 SCImago Journal Rankings: 0.493 |
ISI Accession Number ID |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Xu, S | en_US |
dc.contributor.author | Jiang, D | en_US |
dc.contributor.author | Li, G | en_US |
dc.contributor.author | Luo, J | en_US |
dc.date.accessioned | 2012-11-26T08:46:55Z | - |
dc.date.available | 2012-11-26T08:46:55Z | - |
dc.date.issued | 1992 | en_US |
dc.identifier.citation | Superlattices And Microstructures, 1992, v. 12 n. 2, p. 231-235 | en_US |
dc.identifier.issn | 0749-6036 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/174694 | - |
dc.description.abstract | The excitation power dependence of nonresonant tunneling rates for photogenerated carriers is studied in a GaAs/Al0.35Ga0.65As/GaAs (50A/40A/100A) asymmetric double quantum well p-i-n structure by photoluminescence (PL) measurement. It is found that PL from the two coupled wells depends strongly on excitation power. Especially, the PL peak intensity of the narrow well rapidly decreases as excitation power increases to a certain extent. The explanation for the strong excitation power dependence of the carrier tunneling rates is that LO-phonon-assisted tunneling enhances the rates significantly because of energy-band flattening due to the spatial separation of electrons and holes between the two coupled wells. Our results may be of significance in creating novel alloptical devices. © 1992. | en_US |
dc.language | eng | en_US |
dc.publisher | Academic Press. The Journal's web site is located at http://www.elsevier.com/locate/superlattices | en_US |
dc.relation.ispartof | Superlattices and Microstructures | en_US |
dc.title | Carrier nonresonant tunneling in asymmetric coupled double quantum wells | en_US |
dc.type | Article | en_US |
dc.identifier.email | Xu, S: sjxu@hku.hk | en_US |
dc.identifier.authority | Xu, S=rp00821 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.scopus | eid_2-s2.0-0026998532 | en_US |
dc.identifier.volume | 12 | en_US |
dc.identifier.issue | 2 | en_US |
dc.identifier.spage | 231 | en_US |
dc.identifier.epage | 235 | en_US |
dc.identifier.isi | WOS:A1992JX51700020 | - |
dc.publisher.place | United Kingdom | en_US |
dc.identifier.scopusauthorid | Xu, S=7404439005 | en_US |
dc.identifier.scopusauthorid | Jiang, D=7401574189 | en_US |
dc.identifier.scopusauthorid | Li, G=8161794300 | en_US |
dc.identifier.scopusauthorid | Luo, J=7404182734 | en_US |
dc.identifier.issnl | 0749-6036 | - |