Optical characterization of intersubband transitions in ZnxCd1-xSe/Znx′Cdy′Mg1-x′-y′Se asymmetric coupled quantum well structures by contactless electroreflectance

Contactless electroreflectance (CER) was used to characterize the possible optical transitions in a ZnxCd1‐xSe/Znx′Cdy′Mg1‐x′‐y′Se asymmetric coupled quantum well (ACQW) structure grown by molecular beam epitaxy for quantum cascade laser (QCL) applications. CER spectrum revealed a wide range of the...

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Veröffentlicht in:	Physica status solidi. C 2010-06, Vol.7 (6), p.1530-1532
Hauptverfasser:	Wu, Jiun-De, Huang, Chen-Tai, Huang, Ying-Sheng, Charles, William O., Shen, Aidong, Zhang, Qiang, Tamargo, Maria. C.
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Sprache:	eng
Schlagworte:	II-VI quantum wells interband transitions MBE photoluminescence reflectivity spectra
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creator	Wu, Jiun-De Huang, Chen-Tai Huang, Ying-Sheng Charles, William O. Shen, Aidong Zhang, Qiang Tamargo, Maria. C.
description	Contactless electroreflectance (CER) was used to characterize the possible optical transitions in a ZnxCd1‐xSe/Znx′Cdy′Mg1‐x′‐y′Se asymmetric coupled quantum well (ACQW) structure grown by molecular beam epitaxy for quantum cascade laser (QCL) applications. CER spectrum revealed a wide range of the possible optical transitions in ACQW structure. The ground state transition was assigned by comparing with the photoluminescence emission signal taken from the same structure. A comprehensive analysis of the CER spectrum led to the identification of various interband transitions. The intersubband transitions were estimated and confirmed by FTIR measurements. The results demonstrate the potential of using CER as a complimentary technique for the contactless and nondestructive characterization of the wide band gap II‐VI ACQW structures for QCL applications (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
doi_str_mv	10.1002/pssc.200983159
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C.</creatorcontrib><title>Optical characterization of intersubband transitions in ZnxCd1-xSe/Znx′Cdy′Mg1-x′-y′Se asymmetric coupled quantum well structures by contactless electroreflectance</title><title>Physica status solidi. C</title><addtitle>Phys. Status Solidi (c)</addtitle><description>Contactless electroreflectance (CER) was used to characterize the possible optical transitions in a ZnxCd1‐xSe/Znx′Cdy′Mg1‐x′‐y′Se asymmetric coupled quantum well (ACQW) structure grown by molecular beam epitaxy for quantum cascade laser (QCL) applications. CER spectrum revealed a wide range of the possible optical transitions in ACQW structure. The ground state transition was assigned by comparing with the photoluminescence emission signal taken from the same structure. A comprehensive analysis of the CER spectrum led to the identification of various interband transitions. The intersubband transitions were estimated and confirmed by FTIR measurements. 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C</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wu, Jiun-De</au><au>Huang, Chen-Tai</au><au>Huang, Ying-Sheng</au><au>Charles, William O.</au><au>Shen, Aidong</au><au>Zhang, Qiang</au><au>Tamargo, Maria. C.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Optical characterization of intersubband transitions in ZnxCd1-xSe/Znx′Cdy′Mg1-x′-y′Se asymmetric coupled quantum well structures by contactless electroreflectance</atitle><jtitle>Physica status solidi. C</jtitle><addtitle>Phys. Status Solidi (c)</addtitle><date>2010-06</date><risdate>2010</risdate><volume>7</volume><issue>6</issue><spage>1530</spage><epage>1532</epage><pages>1530-1532</pages><issn>1862-6351</issn><eissn>1610-1642</eissn><abstract>Contactless electroreflectance (CER) was used to characterize the possible optical transitions in a ZnxCd1‐xSe/Znx′Cdy′Mg1‐x′‐y′Se asymmetric coupled quantum well (ACQW) structure grown by molecular beam epitaxy for quantum cascade laser (QCL) applications. CER spectrum revealed a wide range of the possible optical transitions in ACQW structure. The ground state transition was assigned by comparing with the photoluminescence emission signal taken from the same structure. A comprehensive analysis of the CER spectrum led to the identification of various interband transitions. The intersubband transitions were estimated and confirmed by FTIR measurements. The results demonstrate the potential of using CER as a complimentary technique for the contactless and nondestructive characterization of the wide band gap II‐VI ACQW structures for QCL applications (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)</abstract><cop>Berlin</cop><pub>WILEY-VCH Verlag</pub><doi>10.1002/pssc.200983159</doi><tpages>3</tpages></addata></record>
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subjects	II-VI quantum wells interband transitions MBE photoluminescence reflectivity spectra
title	Optical characterization of intersubband transitions in ZnxCd1-xSe/Znx′Cdy′Mg1-x′-y′Se asymmetric coupled quantum well structures by contactless electroreflectance
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