File Download
There are no files associated with this item.
Links for fulltext
(May Require Subscription)
- Scopus: eid_2-s2.0-0035007920
- WOS: WOS:000170202400029
- Find via
Supplementary
- Citations:
- Appears in Collections:
Article: Changes in the positron-electron momentum distribution in GaAs brought about by chopped light
Title | Changes in the positron-electron momentum distribution in GaAs brought about by chopped light |
---|---|
Authors | |
Issue Date | 2001 |
Publisher | Trans Tech Publications Ltd. The Journal's web site is located at http://www.scientific.net |
Citation | Materials Science Forum, 2001, v. 363-365, p. 114-116 How to Cite? |
Abstract | We report on an attempt to observe the EL2 → EL2* transition in semi-insulating GaAs using Doppler broadening of annihilation radiation spectroscopy. Unlike the original observation of this transition using positron annihilation spectroscopy, the present method has sought to observe the production of EL2* through a light chopping experiment, where on the half cycle of illumination the EL2* state is formed and on the second half cycle the EL2* thermally quenches back to EL2. While results are at a preliminary state we have obtained evidence for the production of EL2* from the broad-band emission of a Xenon lamp. While calculations suggest that we should be able to see the EL2* from the IR emission (1.3eV) of GaAs light emitting diodes we have not yet been able to achieve this. Reasons why are discussed. |
Persistent Identifier | http://hdl.handle.net/10722/80929 |
ISSN | 2023 SCImago Journal Rankings: 0.195 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Li, S | en_HK |
dc.contributor.author | Fung, S | en_HK |
dc.contributor.author | Beling, CD | en_HK |
dc.contributor.author | Ling, CC | en_HK |
dc.date.accessioned | 2010-09-06T08:11:51Z | - |
dc.date.available | 2010-09-06T08:11:51Z | - |
dc.date.issued | 2001 | en_HK |
dc.identifier.citation | Materials Science Forum, 2001, v. 363-365, p. 114-116 | en_HK |
dc.identifier.issn | 0255-5476 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/80929 | - |
dc.description.abstract | We report on an attempt to observe the EL2 → EL2* transition in semi-insulating GaAs using Doppler broadening of annihilation radiation spectroscopy. Unlike the original observation of this transition using positron annihilation spectroscopy, the present method has sought to observe the production of EL2* through a light chopping experiment, where on the half cycle of illumination the EL2* state is formed and on the second half cycle the EL2* thermally quenches back to EL2. While results are at a preliminary state we have obtained evidence for the production of EL2* from the broad-band emission of a Xenon lamp. While calculations suggest that we should be able to see the EL2* from the IR emission (1.3eV) of GaAs light emitting diodes we have not yet been able to achieve this. Reasons why are discussed. | en_HK |
dc.language | eng | en_HK |
dc.publisher | Trans Tech Publications Ltd. The Journal's web site is located at http://www.scientific.net | en_HK |
dc.relation.ispartof | Materials Science Forum | en_HK |
dc.rights | Materials Science Forum. Copyright © Trans Tech Publications Ltd. | en_HK |
dc.title | Changes in the positron-electron momentum distribution in GaAs brought about by chopped light | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0255-5476&volume=363-365&spage=114&epage=116&date=2001&atitle=Changes+in+the+Positron-Electron+Momentum+Distribution+in+GaAs+Brought+About+by+Chopped+Light | en_HK |
dc.identifier.email | Fung, S: sfung@hku.hk | en_HK |
dc.identifier.email | Beling, CD: cdbeling@hkucc.hku.hk | en_HK |
dc.identifier.email | Ling, CC: ccling@hkucc.hku.hk | en_HK |
dc.identifier.authority | Fung, S=rp00695 | en_HK |
dc.identifier.authority | Beling, CD=rp00660 | en_HK |
dc.identifier.authority | Ling, CC=rp00747 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.scopus | eid_2-s2.0-0035007920 | en_HK |
dc.identifier.hkuros | 56850 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-0035007920&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 363-365 | en_HK |
dc.identifier.spage | 114 | en_HK |
dc.identifier.epage | 116 | en_HK |
dc.identifier.isi | WOS:000170202400029 | - |
dc.publisher.place | Switzerland | en_HK |
dc.identifier.scopusauthorid | Li, S=7409241368 | en_HK |
dc.identifier.scopusauthorid | Fung, S=7201970040 | en_HK |
dc.identifier.scopusauthorid | Beling, CD=7005864180 | en_HK |
dc.identifier.scopusauthorid | Ling, CC=13310239300 | en_HK |
dc.identifier.issnl | 0255-5476 | - |